KR102171288B1 - Power producing system for submarine using fuel cell - Google Patents

Abstract

According to the present invention, a heat engine for generating mechanical energy used as propulsion power of a ship by burning fossil fuels and discharging carbon dioxide gas as a by-product; And a secondary battery for producing electric energy used as a propulsion power of a ship, wherein the secondary battery includes a first aqueous solution accommodated in a first reaction space, a cathode at least partially submerged in the first aqueous solution, and a second A basic second aqueous solution accommodated in the reaction space, an anode at least partially immersed in the second aqueous solution, a connection passage for communicating the first reaction space and the second reaction space, and the second solution provided in the connection passage The first aqueous solution and the second aqueous solution are provided with an ion transfer member having a porous structure that allows the movement of ions while blocking the movement of the aqueous solution, and carbon dioxide gas discharged from the heat engine is introduced into the first aqueous solution during the discharge process of the secondary battery. , Hydrogen ions and bicarbonate ions are generated by the reaction of water in the first aqueous solution and the carbon dioxide gas, and the hydrogen ions and electrons of the cathode are combined to generate hydrogen gas.

Description

Power production system for submarines using fuel cells {POWER PRODUCING SYSTEM FOR SUBMARINE USING FUEL CELL}

The present invention relates to a technology for producing power for a submarine, and more particularly, to a technology for producing power for a submarine using a fuel cell.

With the recent industrialization, emissions of greenhouse gases are continuously increasing, and carbon dioxide accounts for the largest proportion of greenhouse gases. Carbon dioxide emissions by industry type are the largest from energy sources such as power plants, and carbon dioxide from cement/steel/refining industries including power generation accounts for half of the world's generation. The field of carbon dioxide conversion/utilization can be largely divided into chemical conversion, biological conversion, and direct use, and the technical categories can be categorized into catalysts, electrochemistry, bioprocessing, light utilization, inorganic (carbonic acid), and polymers. Since carbon dioxide is generated in various industries and processes, and carbon dioxide reduction cannot be achieved with one technology, various approaches for carbon dioxide reduction are required.

Currently, the DOE (Department Of Energy) of the US Department of Energy is promoting multi-faceted technology development with interest in CCUS technology that combines CCS (Carbon Capture & Storage) and CCU (CC & Utilization) as a technology to reduce carbon dioxide. Although CCUS technology is recognized as an effective GHG reduction method, it faces problems of high investment costs, the possibility of emission of harmful trapping agents to the atmosphere, and low technology maturity. In addition, from an energy and climate policy perspective, CCUS provides a means to substantially reduce GHG emissions, but there are many complements to the realization of the technology. Accordingly, there is a need to develop a new concept of breakthrough technology that more efficiently captures, stores, and utilizes carbon dioxide.

Recently, the development of technology to use a fuel cell excellent in quietness and efficiency as a power source of a submarine is being made. In the case of fuel cells used in submarines, due to the limitation of hydrogen storage, a method of reforming fuel such as methanol through a reformer and supplying hydrogen to the fuel cell is used, but the treatment of carbon dioxide generated as a by-product in the reforming process is a problem. have. If carbon dioxide generated during the reforming process in the submarine's fuel cell system is directly discharged to the outside of the submarine, there is a risk of exposing the position of the submarine in the case of a military submarine. In addition, it is technically difficult to discharge carbon dioxide to the outside of the submarine in deep water with high water pressure.

Republic of Korea Patent Publication No. 10-1584561 (2016.01.21.)

An object of the present invention is to provide a power production system for a submarine that prevents carbon dioxide from being discharged to the outside of the submarine in a power production system for a submarine using a fuel cell.

Another object of the present invention is to provide a power production system for a submarine with improved efficiency by utilizing carbon dioxide generated during a reforming process in a power production system for a submarine using a fuel cell.

In order to achieve the above object of the present invention, according to an aspect of the present invention, a reformer for producing hydrogen-rich reformed gas from a hydrogen-containing fuel and generating carbon dioxide gas as a by-product; A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And a fuel cell receiving reformed gas produced from the reformer and hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine, wherein the secondary battery comprises: a first reaction space accommodated in a first reaction space. An aqueous solution, a cathode at least partially immersed in the first aqueous solution, a basic second aqueous solution accommodated in a second reaction space, an anode at least partially immersed in the second aqueous solution, the first reaction space and the second A connection passage for communicating the reaction space, and an ion transfer member having a porous structure that is installed in the connection passage to block movement of the first and second aqueous solutions and allow the movement of ions, and discharge of the secondary battery In the process, hydrogen ions and bicarbonate ions are generated by the reaction of water in the first aqueous solution and the carbon dioxide gas, and the hydrogen ions and electrons of the cathode are combined to generate hydrogen gas supplied to the fuel cell. A production system is provided.

In order to achieve the above object of the present invention, according to another aspect of the present invention, a reformer for producing hydrogen-rich reformed gas from hydrogen-containing fuel and generating carbon dioxide gas as a by-product; A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And a fuel cell receiving reformed gas produced from the reformer and hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine, wherein the secondary battery comprises: a first reaction space; An accommodation space in communication with the reaction space, the first reaction space and a first aqueous solution accommodated in the accommodation space, a cathode at least partially submerged in the first aqueous solution in the first reaction space, and a second reaction space, A basic second aqueous solution accommodated in the second reaction space, an anode at least partially immersed in the second aqueous solution, a connection passage communicating the first reaction space and the second reaction space, and installed in the connection passage And a porous ion transfer member allowing only movement of ions between the first aqueous solution and the second aqueous solution, and carbon dioxide gas generated in the reformer with the first aqueous solution in the receiving space during the discharge process of the secondary battery Is introduced, hydrogen ions and bicarbonate ions are generated by the reaction of water in the first aqueous solution and the carbon dioxide gas, and hydrogen ions and electrons of the cathode are combined in the first reaction space to be supplied to the fuel cell. Gas is generated, and the non-ionized carbon dioxide gas of the carbon dioxide gas flowing into the first aqueous solution in the receiving space is separated from the first aqueous solution in the receiving space and is not supplied to the first reaction space. The system is provided.

In order to achieve the above object of the present invention, according to another aspect of the present invention, a reformer for producing hydrogen-rich reformed gas from hydrogen-containing fuel and generating carbon dioxide gas as a by-product; A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And a fuel cell receiving reformed gas produced from the reformer and hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine, wherein the secondary battery comprises: a first reaction space accommodated in a first reaction space. A potassium hydroxide aqueous solution, a cathode at least partially submerged in the first potassium hydroxide aqueous solution, a second aqueous potassium hydroxide solution accommodated in a second reaction space, an anode at least partially submerged in the second aqueous potassium hydroxide solution, and the first A connection passage for communicating the reaction space and the second reaction space, and an ion exchange membrane installed in the connection passage to allow only the movement of ions between the first aqueous potassium hydroxide solution and the second aqueous potassium hydroxide solution, and the In the discharging process of the secondary battery, carbon dioxide gas generated in the reformer is introduced into the first potassium hydroxide aqueous solution, and hydrogen ions and bicarbonate ions are generated by the reaction of water in the first potassium hydroxide aqueous solution and the carbon dioxide gas, and the hydrogen There is provided a power production system for a submarine in which ions and electrons of the cathode are combined to generate hydrogen gas supplied to the fuel cell.

In order to achieve the above object of the present invention, according to another aspect of the present invention, a reformer for producing hydrogen-rich reformed gas from hydrogen-containing fuel and generating carbon dioxide gas as a by-product; A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And a fuel cell receiving reformed gas produced from the reformer and hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine, wherein the secondary battery comprises: a first reaction space; An accommodation space in communication with the reaction space, a first aqueous potassium hydroxide solution accommodated in the first reaction space and the accommodation space, a cathode at least partially submerged in the first aqueous solution in the first reaction space, and a second reaction space And, a second second aqueous potassium hydroxide solution accommodated in the second reaction space, an anode at least partially submerged in the second aqueous potassium hydroxide solution, and a connection passage communicating the first reaction space and the second reaction space. And an ion exchange membrane installed in the connection passage to allow only the movement of ions between the first potassium hydroxide aqueous solution and the second potassium hydroxide aqueous solution, and the first hydroxide of the accommodation space in the discharge process of the secondary battery Carbon dioxide gas generated in the reformer is introduced into the potassium aqueous solution, and hydrogen ions and bicarbonate ions are generated by the reaction of water in the first potassium hydroxide aqueous solution and the carbon dioxide gas, and the hydrogen ions and the cathode are formed in the first reaction space. Electrons are combined to generate hydrogen gas supplied to the fuel cell, and non-ionized carbon dioxide gas among the carbon dioxide gas flowing into the first potassium hydroxide aqueous solution in the accommodation space is separated from the first potassium hydroxide aqueous solution in the accommodation space There is provided a power production system for a submarine so that it is not supplied to the first reaction space.

In order to achieve the above object of the present invention, according to another aspect of the present invention, a reformer for producing hydrogen-rich reformed gas from hydrogen-containing fuel and generating carbon dioxide gas as a by-product; A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And a fuel cell receiving reformed gas produced from the reformer and hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine, wherein the secondary battery comprises: a first reaction space accommodated in a first reaction space. An aqueous solution, a cathode at least partially immersed in the first aqueous solution, a basic second aqueous solution accommodated in a second reaction space, an anode at least partially immersed in the second aqueous solution, the first aqueous solution and the second aqueous solution And a salt bridge connecting the secondary battery, and carbon dioxide gas generated in the reformer is introduced into the first aqueous solution during the discharging process of the secondary battery, and hydrogen ions and bicarbonate ions are formed by the reaction of the water in the first aqueous solution and the carbon dioxide gas. Is generated, the hydrogen ions and electrons of the cathode are combined to generate hydrogen gas supplied to the fuel cell, a power production system for a submarine is provided.

In order to achieve the above object of the present invention, according to another aspect of the present invention, a reformer for producing hydrogen-rich reformed gas from hydrogen-containing fuel and generating carbon dioxide gas as a by-product; A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And a fuel cell receiving reformed gas produced from the reformer and hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine, wherein the secondary battery comprises: a first reaction space; An accommodation space in communication with the reaction space, the first reaction space and a first aqueous solution accommodated in the accommodation space, a cathode at least partially submerged in the first aqueous solution in the first reaction space, and a second reaction space, A basic second aqueous solution accommodated in the second reaction space, an anode at least partially submerged in the second aqueous solution, and a salt bridge connecting the first aqueous solution and the second aqueous solution, and a discharge process of the secondary battery In the receiving space, carbon dioxide gas generated in the reformer is introduced into the first aqueous solution in the accommodation space, and hydrogen ions and bicarbonate ions are generated by the reaction of water in the first aqueous solution and the carbon dioxide gas, and the hydrogen ions are generated in the first reaction space. Hydrogen gas supplied to the fuel cell is generated by the combination of ions and electrons of the cathode, and non-ionized carbon dioxide gas among the carbon dioxide gas flowing into the first aqueous solution in the accommodation space is from the first aqueous solution in the accommodation space. A power production system for a submarine is provided that is separated and is not supplied to the first reaction space.

In order to achieve the above object of the present invention, according to another aspect of the present invention, a reformer for producing hydrogen-rich reformed gas from hydrogen-containing fuel and generating carbon dioxide gas as a by-product; A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And a fuel cell receiving reformed gas produced from the reformer and hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine, wherein the secondary battery comprises an aqueous electrolyte accommodated in a reaction space, A cathode at least partially submerged in the aqueous electrolyte in the reaction space, and an anode at least partially submerged in the aqueous electrolyte in the reaction space, and carbon dioxide gas generated from the reformer flows into the aqueous electrolyte during the discharge process of the secondary battery. And, hydrogen ions and bicarbonate ions are generated by the reaction of water of the aqueous electrolyte and the carbon dioxide gas, and the hydrogen ions and electrons of the cathode are combined to generate hydrogen gas supplied to the fuel cell. The system is provided.

In order to achieve the above object of the present invention, according to another aspect of the present invention, a reformer for producing hydrogen-rich reformed gas from hydrogen-containing fuel and generating carbon dioxide gas as a by-product; A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And a fuel cell receiving reformed gas produced from the reformer and hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine, wherein the secondary battery is in communication with the reaction space and the reaction space. A receiving space, an aqueous electrolyte accommodated in the reaction space and the receiving space, a cathode at least partially submerged in the aqueous electrolyte in the reaction space, and an anode at least partially submerged in the aqueous electrolyte in the reaction space, and In the process of discharging the secondary battery, carbon dioxide gas generated in the reformer is introduced into the aqueous electrolyte in the receiving space, and hydrogen ions and bicarbonate ions are generated by the reaction of the water in the aqueous electrolyte and the carbon dioxide gas, The hydrogen ions and electrons of the cathode are combined to generate hydrogen gas supplied to the fuel cell, and the non-ionized carbon dioxide gas of the carbon dioxide gas flowing into the aqueous electrolyte in the accommodation space is the aqueous electrolyte in the accommodation space. A power production system for a submarine is provided that is separated from and is not supplied to the reaction space.

According to the present invention, all the objects of the present invention described above can be achieved. Specifically, in the submarine power production system using a fuel cell, a secondary battery for generating hydrogen supplied to the fuel cell using carbon dioxide discharged from the reformer together with electric energy used as power of the submarine during the discharge process is provided. Therefore, the emission of carbon dioxide from the submarine can be prevented, and the power production efficiency of the submarine can be improved.

1 is a block diagram showing a schematic configuration of a submarine power generation system using a fuel cell according to an embodiment of the present invention.
FIG. 2 is a diagram for a first embodiment of a secondary battery provided in the submarine power production system shown in FIG. 1, and is a schematic diagram illustrating a discharging process.
FIG. 3 is a diagram of a second embodiment of a secondary battery provided in the submarine power production system shown in FIG. 1, and is a schematic diagram illustrating a discharging process.
4 is a diagram for a third embodiment of a secondary battery provided in the submarine power production system shown in FIG. 1, and is a schematic diagram illustrating a discharging process.
5 is a diagram for a fourth embodiment of a secondary battery provided in the submarine power production system shown in FIG. 1, and is a schematic diagram illustrating a discharging process.
6 is a diagram for a fifth embodiment of a secondary battery provided in the submarine power production system shown in FIG. 1, and is a schematic diagram illustrating a discharging process.
7 is a diagram for a sixth embodiment of a secondary battery provided in the submarine power production system shown in FIG. 1, and is a schematic diagram illustrating a discharging process.
FIG. 8 is a diagram for a seventh exemplary embodiment of a secondary battery provided in the submarine power production system shown in FIG. 1, and is a schematic diagram illustrating a discharging process.
9 is a diagram illustrating an eighth embodiment of a secondary battery provided in the submarine power production system shown in FIG. 1, and is a schematic diagram illustrating a discharging process.
10 is a diagram for a ninth embodiment of a secondary battery provided in the submarine power production system shown in FIG. 1, and is a schematic diagram illustrating a discharging process.
FIG. 11 is a diagram for a tenth embodiment of a secondary battery provided in the submarine power production system shown in FIG. 1, and is a schematic diagram illustrating a discharging process.

Hereinafter, the configuration and operation of an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a block diagram showing a schematic configuration of a submarine power production system using a fuel cell according to an embodiment of the present invention. 2, the submarine power production system 1000 using a fuel cell according to an embodiment of the present invention is a reformer that produces hydrogen-rich reformed gas from fuel for fuel cells such as methanol and generates carbon dioxide as a by-product. (1500), and a secondary battery (100), in which hydrogen is generated in the discharge process by using carbon dioxide discharged from the reformer (1500) and generating electric energy used as power of the submarine (100) And a fuel cell 1400 that receives hydrogen contained in the reformed gas produced by the reformer 1500 and produces electric energy used as power for a submarine.

The reformer 1500 produces hydrogen-rich reformed gas from fuel for a fuel cell and additionally generates carbon dioxide gas. The fuel reformed by the reformer 1500 may be one that is generally used as a fuel for a fuel cell, typically methanol and methane (CH ₄ ), ethane (C ₂ H ₆ ), and propane. ) (C ₃ H ₈ ), butane (C ₄ H ₁₀ ), hexane (C ₆ H ₁₄ ), heptane (C ₇ H ₁₆ ), octane (C ₈ H ₁₈ ), nonane (C ₉ H ₂₀ ), decane (C ₁₀ H ₂₂ ). In this embodiment, it will be described that the reformer 1500 is a methane-steam reformer that produces hydrogen (H ₂ ) by a reforming reaction of methane (CH ₄ ) and water vapor (H ₂ O).

Methane-steam reformers occupy a significant portion of the hydrogen production process due to the advantages of low cost and mass production. The following [Scheme 1] and [Scheme 2] relate to the reforming reaction of the methane-steam reformer.

[Scheme 1]

CH ₄ + H ₂ O -> CO + 3H ₂

[Scheme 2]

CO + H ₂ O -> CO ₂ + H ₂

That is, carbon monoxide (CO) and hydrogen are produced by a chemical reaction between methane and water vapor, and hydrogen can be finally produced by a chemical reaction between carbon monoxide and water vapor continuously. Hydrogen produced in the methane-steam reformer is supplied as fuel to the fuel cell 1400.

However, the methane-steam reformer 1500 has many advantages described above, but as can be seen in [Scheme 1] and [Scheme 2], water vapor must be supplied from the outside for the operation of the process, and hydrogen production There is a problem that carbon dioxide (CO ₂ ), which is the main cause of global warming environmental problems, is inevitably generated as a by-product of However, in the case of the present invention, the carbon dioxide generated from the methane-steam reformer is discharged to the atmosphere or transferred to a separate carbon dioxide capture and storage process. By transferring to (100), the problem of carbon dioxide generation, which is a necessary evil in the operation of the methane-steam reformer, can be solved. Since the methane-steam reformer is a known technology, a detailed description thereof will be omitted here.

The secondary battery 100 generates electric energy during the discharge process, and generates hydrogen gas using carbon dioxide gas generated in the reformer 1500 during the discharge process as a raw material. The electric energy produced by the secondary battery 100 is used as the power of the submarine together with the electric energy produced by the fuel cell 1400, and the hydrogen gas generated by the secondary battery 100 is converted to the reformed gas discharged from the reformer 1500. It is supplied as fuel of the fuel cell 1400 together with the contained hydrogen gas. A specific configuration of the secondary battery 100 will be described in detail below.

The fuel cell 1400 receives hydrogen contained in the reformed gas produced by the reformer 1500 and the hydrogen generated from the secondary battery 100 to produce electric energy used as power of the submarine. Electric energy produced by the fuel cell 1400 and electric energy produced by the secondary battery 100 are used as power of the submarine.

FIG. 2 is a diagram for a first embodiment of a secondary battery provided in the submarine power production system 1000 shown in FIG. 1, and is a schematic diagram illustrating a discharging process. Referring to FIG. 2, the secondary battery 100 includes a cathode part 110, an anode part 150, and a connection part 190 connecting the cathode part 110 and the anode part 150. The secondary battery 100 produces hydrogen gas (H ₂ ) by using carbon dioxide gas (CO ₂ ) discharged from the reformer (1500 in FIG. 1) as a raw material during the discharge process.

The cathode unit 110 includes a first reaction vessel 110a providing a first reaction space 111 therein, a first aqueous solution 115 contained in the first reaction space 111, and a first aqueous solution 115 ) Is provided with a cathode 118 that is at least partially submerged. As the first aqueous solution 115, an alkaline aqueous solution (in this embodiment, one obtained by eluting CO ₂ from a strong basic solution of 1M KOH is used), sea water, tap water, distilled water, and the like may be used. The cathode 118 is an electrode for forming an electric circuit, and may be carbon paper, carbon fiber, carbon felt, carbon cloth, metal foam, metal thin film, or a combination thereof, and a platinum catalyst may also be used. In the case of catalysts, in addition to platinum catalysts, all other catalysts that can be generally used as hydrogen evolution (HER) catalysts, such as carbon-based catalysts, carbon-metal-based complex catalysts, and perovskite oxide catalysts, are also included. A first inlet 112, a first outlet 113, and a first connector 114 communicating with the first reaction space 111 are formed in the first reaction vessel 110a. The first inlet 112 is located under the first reaction space 111 so as to be located below the water surface of the first aqueous solution 115. The first outlet 113 is positioned above the first reaction space 111 so as to be positioned above the water surface of the first aqueous solution 115. Carbon dioxide, which is used as a raw material in the discharge process, flows into the first reaction space 111 through the first inlet 112, and the first aqueous solution 115 may also be introduced if necessary. The gas generated in the charging/discharging process is discharged to the outside through the first discharge port 113. Although not shown, the inlet 112 and the outlet 113 may be selectively opened and closed by a valve or the like during charging and discharging in a timely manner. The first connector 114 is located below the water surface of the first aqueous solution 115, and the connector 190 is connected to the first connector 114. In the cathode 110, a carbon dioxide elution reaction occurs during the discharge process.

The anode unit 150 includes a second reaction vessel 150a providing a second reaction space 151 therein, a second aqueous solution 155 contained in the second reaction space 151, and a second aqueous solution 155. ) Is provided with an anode 158 that is at least partially submerged. As the second aqueous solution 155, a high concentration alkali solution is used, for example, 1M KOH or 6M KOH may be used. The anode 158 is an electrode made of a metal material constituting an electric circuit. In this embodiment, it will be described that zinc (Zn) or aluminum (Al) is used as the anode 158. Further, as the anode 158, an alloy containing zinc or aluminum may be used. Additionally, vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), and copper (Cu) may be used as the anode 158, at which time acidic or basic The solution may be used as the second aqueous solution 155. A second connector 154 communicating with the second reaction space 151 is formed in the anode part 150. The second connector 154 is located below the water surface of the second aqueous solution 155, and the connector 190 is connected to the second connector 154.

The connection unit 190 includes a connection passage 191 connecting the cathode unit 110 and the anode unit 150, and an ion transfer member 192 installed inside the connection passage 191.

The connection passage 191 extends between the first connector 114 formed in the cathode part 110 and the second connector 154 formed in the anode part 150 so that the first reaction space 111 of the cathode part 110 ) And the second reaction space 151 of the anode unit 150 are communicated with each other. The ion transfer member 192 is installed inside the connection passage 191.

The ion transfer member 192 has a generally disk shape and is installed in a form that blocks the interior of the connection passage 191. The ion transfer member 192 has a porous structure to allow the movement of ions between the cathode unit 110 and the anode unit 150 while blocking the movement of the aqueous solutions 115 and 155. In this embodiment, it is described that the material of the ion transport member is glass, but the present invention is not limited thereto, and other materials having a porous structure may be used, and this also falls within the scope of the present invention. In this embodiment, the ion transfer member 192 has a pore size of 40 to 90 microns corresponding to G2 grade, 15 to 40 microns corresponding to G3 grade, 5 to 15 microns corresponding to G4 grade, Porous glass of 1 to 2 microns corresponding to G5 can be used. The ion transfer member 192 transfers only ions, thereby eliminating ionic imbalance occurring in the discharge process.

Now, the discharging process of the secondary battery 100 described above based on the configuration will be described in detail. 2 shows a discharge process of the secondary battery 100 together. Referring to FIG. 2, carbon dioxide gas is injected into the first aqueous solution 115 through the first inlet 112, and a chemical elution reaction of carbon dioxide as shown in [Reaction Formula 3] is performed in the cathode unit 110.

[Scheme 3]

_{H 2 O (l) + CO} 2 (g) → H + (aq) + HCO 3 - (aq)

That is, in the cathode part 110, the carbon dioxide gas (CO ₂ ) supplied to the cathode part 110 is spontaneously reacted with water (H ₂ O) in the first aqueous solution 115 to form hydrogen cations (H ⁺ ) and bicarbonate. (HCO ₃ ^-) is generated.

In addition, in the cathode unit 110, an electrical reaction as shown in [Reaction Formula 4] is performed.

[Scheme 4]

^{2H + (aq) + 2e -} → H 2 (g)

That is, hydrogen cations at the cathode portion (110) (H ⁺⁾ are electron (e ^-) is a hydrogen gas (H ₂₎ generated receives. The generated hydrogen gas is discharged to the outside through the first outlet 113.

In addition, in the cathode unit 110, a complex hydrogen generation reaction as shown in [Scheme 5] is performed.

[Scheme 5]

_{2H 2 O (l) + 2CO} 2 (g) + 2e - → H 2 (g) + 2HCO 3 - (aq)

In addition, in the anode unit 150, when the anode 158 is zinc (Zn), an oxidation reaction as shown in [Reaction Formula 6] is performed.

[Scheme 6]

^{Zn + 4OH - → Zn (OH} ) 4 2- + 2e - (E 0 = -1.25 V)

^{_{Zn (OH) 4 2- → ZnO}} + H 2 O + 2OH -

As a result, when the anode 158 is zinc (Zn), the overall reaction equation made in the discharge process is as follows [Reaction equation 7].

[Scheme 7]

_{Zn + 2CO 2 + 2H 2 O} + 2OH - → ZnO + 2HCO 3 - (aq) + H 2 (g) (E 0 = 1.25 V)

If, in the case where the anode 158 in the anode unit 150 is aluminum (Al), an oxidation reaction as shown in [Reaction Formula 8] is performed.

[Scheme 8]

^{Al + OH - → Al (OH} ) 3 ^{+ 3e - (E 0 = -2.31} V)

As a result, when the anode 158 is aluminum (Al), the overall reaction equation made in the discharging process is as follows [Scheme 9].

[Scheme 9]

_{2Al + 6CO 2 + 6H 2 O} + 6OH - → 2Al (OH) 3 _{^{+ 6HCO 3 - (aq) +}} 3H 2 (g) (E 0 = 2.31 V)

As a result, as can be seen from [Scheme 8] and [Scheme 9], hydrogen ions generated by carbon dioxide eluted from the first aqueous solution 115 during discharge receive electrons from the cathode 18 Is reduced to, is discharged through the first discharge port 113, the metal anode 158 is changed to the form of oxide

3 to 11 illustrate configurations of each of the secondary batteries that can be used in the submarine power production system shown in FIG. 1 in place of the secondary battery 100 of the embodiment shown in FIG. 2.

3 is a schematic diagram showing a discharge process of a secondary battery according to a second embodiment of the present invention. Referring to FIG. 3, the secondary battery 100a includes a cathode unit 110, an anode unit 150, a connection unit 190 connecting the cathode unit 110 and the anode unit 150, and a carbon dioxide processing unit 120. ), and a carbon dioxide circulation supply unit 130, and a connection pipe 140 for communicating the cathode unit 110 and the carbon dioxide processing unit 120. Since the cathode unit 110, the anode unit 150, and the connection unit 190 are the same as those described in the embodiment shown in FIG. 2, detailed descriptions thereof will be omitted.

The carbon dioxide processing unit 120 includes a storage container 120a providing an accommodation space 121 therein, and a first aqueous solution that is accommodated in the accommodation space 121 and is the same as the first aqueous solution 115 of the cathode part 110. An aqueous solution 115 is provided. The receiving container 120a has a second inlet 122 through which carbon dioxide gas is introduced into the receiving space 121, a communication port 123 to which the connection pipe 140 is connected, and located above the receiving space 121. A second outlet 124 is formed.

The second inlet 122 is positioned above the communication port 123 in the receiving space 121, and is positioned below the water surface of the second outlet 124 and the first aqueous solution 115. Carbon dioxide gas, which is used as a raw material in the discharge process, flows into the accommodation space 121 through the second inlet 122. The first aqueous solution 115 may also be supplied through the second inlet 122 as needed. The second inlet 122 and the first outlet 113 may be selectively opened and closed at a suitable time by a valve or the like during charging and discharging.

The communication port 123 is located below the second inlet 122 in the receiving space 121, and a connection pipe 140 is connected to the communication port 123. The accommodation space 121 communicates with the first reaction space 111 through the communication port 123.

The second outlet 124 is positioned above the water surface of the second inlet 122 and the first aqueous solution 115 in the receiving space 121. Carbon dioxide gas that has not been ionized because it is not dissolved in the first aqueous solution 115 in the receiving space 121 through the second outlet 124 is discharged to the outside. The carbon dioxide gas discharged through the second outlet 124 is supplied to the second inlet 122 through the carbon dioxide circulation supply unit 130.

The carbon dioxide circulation supply unit 130 circulates the carbon dioxide gas discharged through the second outlet 224 to the second inlet 122 and supplies it again.

The connection pipe 140 connects the first inlet 112 of the first reaction space 111 and the communication port 123 of the accommodation space 121. The first reaction space 111 and the accommodation space 121 communicate with each other through a connection passage 141 formed inside the connection pipe 140.

The carbon dioxide gas that is not ionized because it is not dissolved in the first aqueous solution 115 among the carbon dioxide introduced into the receiving space 121 of the carbon dioxide processing unit 120 through the second inlet 122 is the first reaction space of the cathode unit 110 Carbon dioxide gas that cannot move to 111 but rises and is collected in the space above the water surface of the first aqueous solution 115 in the receiving space 121 and then discharged through the second discharge port 124 and discharged through the second discharge port 124 Is supplied to the receiving space 121 through the second inlet 122 by the carbon dioxide circulation supply unit 130 and is recycled. In addition, the carbon dioxide gas that is not ionized because it is not dissolved in the first aqueous solution 115 among the carbon dioxide introduced into the receiving space 121 of the carbon dioxide processing unit 120 does not move to the first reaction space 111 of the cathode unit 110. Therefore, high-purity hydrogen in which carbon dioxide is not mixed may be discharged through the first discharge port 113.

The configuration of reference numerals not described in FIG. 3 is the same as the configuration indicated by the same reference numeral in the embodiment shown in FIG. 2.

4 is a schematic diagram illustrating a discharging process of a secondary battery according to a third embodiment of the present invention. Referring to FIG. 4, the secondary battery 200 includes a cathode part 210, an anode part 250, and a connection part 290 connecting the cathode part 210 and the anode part 250.

The cathode part 210 includes a first reaction vessel 110a providing a first reaction space 111 therein, a first aqueous solution 215 contained in the first reaction space 111, and a first aqueous solution 215 ) Is provided with a cathode 118 that is at least partially submerged. As the first aqueous solution 215, an aqueous potassium hydroxide solution (in this embodiment, one obtained by eluting CO ₂ in a strongly basic solution of ₁ M KOH is used). Since the configurations of the first reaction vessel 110a and the cathode 118 are the same as the corresponding configurations in the embodiment illustrated in FIG. 2, detailed descriptions thereof will be omitted.

The anode unit 250 includes a second reaction vessel 150a providing a second reaction space 151 therein, a second aqueous solution 255 contained in the second reaction space 151, and a second aqueous solution 255. ) Is provided with an anode 158 that is at least partially submerged. As the second aqueous solution 255, a high-concentration alkali solution is used. In this embodiment, an aqueous potassium hydroxide solution is used. For example, 1M KOH or 6M KOH may be used. Since the configurations of the second reaction vessel 150a and the anode 158 are the same as the corresponding configurations in the embodiment shown in FIG. 2, detailed descriptions thereof will be omitted.

The connection part 290 includes a connection passage 191 connecting the cathode part 210 and the anode part 250, and an ion exchange membrane 292 installed inside the connection passage 191.

The connection passage 191 has the same configuration as the connection passage 191 shown in FIG. 2, and an ion exchange membrane 292 is installed inside the connection passage 191.

The ion exchange membrane 292 is installed to close the inside of the connection passage 191. The ion exchange membrane 292 allows only the movement of ions between the cathode portion 210 and the anode portion 250. Potassium ions (K ⁺ ) contained in the second aqueous solution 255 are moved to the first aqueous solution 215 by the ion exchange membrane 292. In this embodiment, as the ion exchange membrane 292, Nafion, which is a fluorine resin-based cation exchange membrane developed by DuPont, is used, but the present invention is not limited thereto, and potassium ions ( Anything that allows only the movement of K ⁺ ) is possible. The ion exchange membrane 292 transfers only ions, thereby eliminating ionic imbalance occurring in the discharge process.

5 is a schematic diagram showing a discharge process of a secondary battery according to a fourth embodiment of the present invention. 5, the secondary battery 200a includes a cathode part 210, an anode part 250, a connection part 290 connecting the cathode part 210 and the anode part 250, and a carbon dioxide processing part 120. ), and a carbon dioxide circulation supply unit 130, and a connection pipe 140 for communicating the cathode unit 210 and the carbon dioxide processing unit 220. The cathode part 210, the anode part 250, and the connection part 290 are the same as those described in the embodiment shown in FIG. 4, and the carbon dioxide processing part 120, the carbon dioxide circulation supply part 130, and the connection pipe 140 are Since the corresponding configuration shown in FIG. 3 is the same, a detailed description thereof will be omitted. Configurations of reference numerals not described in FIG. 5 are the same as those indicated by the same reference numerals in the embodiment shown in FIG. 3.

6 is a schematic diagram illustrating a discharging process of a secondary battery according to a fifth embodiment of the present invention. Referring to FIG. 6, the secondary battery 300 includes a cathode part 210, an anode part 250, and a connection part 390 connecting the cathode part 210 and the anode part 250. Since the cathode unit 210 and the anode unit 250 are the same as the corresponding configurations of the embodiment shown in FIG. 4, detailed descriptions thereof will be omitted.

The connection part 390 includes a connection passage 191 connecting the cathode part 210 and the anode part 250, and an ion exchange membrane 392 installed inside the connection passage 191.

The connection passage 191 is the same as the connection passage 191 of the embodiment shown in FIG. 4, and an ion exchange membrane 392 is installed inside the connection passage 191.

The ion exchange membrane 392 is installed to close the inside of the connection passage 191. The ion exchange membrane 392 allows only the movement of ions between the cathode portion 210 and the anode portion 250. Hydroxide ions (OH ⁻ ) contained in the first aqueous solution 215 through the ion exchange membrane 392 move to the second aqueous solution 255. In this embodiment, as the ion exchange membrane 392, Nafion, which is a fluorine resin-based cation exchange membrane developed by DuPont, is used, but the present invention is not limited thereto, and hydroxide ions ( all as long as it is possible that only) movement of the ^- OH. Hydroxide ions (OH ⁻ ) are transferred from the cathode unit 210 to the anode unit 250 by the ion exchange membrane 392, thereby eliminating ionic imbalance occurring in the discharge process.

The configurations of reference numerals not described in FIG. 6 are the same as those indicated by the same reference numerals in the embodiment shown in FIG. 4.

7 is a schematic diagram showing a discharging process of a secondary battery according to a sixth embodiment of the present invention. Referring to FIG. 7, the secondary battery 300a includes a cathode part 210, an anode part 250, a connection part 390 connecting the cathode part 210 and the anode part 250, and a carbon dioxide processing part 120. ), and a carbon dioxide circulation supply unit 130, and a connection pipe 140 for communicating the cathode unit 210 and the carbon dioxide processing unit 220. The cathode part 210, the anode part 250, and the connection part 290 are the same as those described in the embodiment shown in FIG. 5, and the carbon dioxide processing part 120, the carbon dioxide circulation supply part 130, and the connection pipe 140 are Since the corresponding configuration shown in FIG. 3 is the same, a detailed description thereof will be omitted. The configuration of reference numerals not described in FIG. 7 is the same as the configuration indicated by the same reference numeral in the embodiment shown in FIG. 5.

8 is a schematic diagram showing a discharge process of a secondary battery according to a seventh embodiment of the present invention. Referring to FIG. 8, the secondary battery 400 includes a cathode part 410, an anode part 450, and a salt bridge 490 connecting the cathode part 410 and the anode part 450. do.

The cathode part 410 includes a first reaction vessel 410a providing a first reaction space 411 therein, a first aqueous solution 415 contained in the first reaction space 411, and a first aqueous solution 415 ) Is provided with a cathode 418 at least partially submerged. One end of the salt bridge 490 is immersed in the first aqueous solution 415. As the first aqueous solution 415, an alkaline aqueous solution (in this embodiment, one obtained by eluting CO ₂ from a strong basic solution of 1M KOH is used), sea water, tap water, distilled water, and the like may be used. The cathode 418 is an electrode for forming an electric circuit, and may be carbon paper, carbon fiber, carbon felt, carbon cloth, metal foam, metal thin film, or a combination thereof, and a platinum catalyst may also be used. In the case of catalysts, in addition to platinum catalysts, all other catalysts that can be generally used as hydrogen evolution (HER) catalysts, such as carbon-based catalysts, carbon-metal-based complex catalysts, and perovskite oxide catalysts, are also included. A first inlet 412 and a first outlet 413 communicating with the first reaction space 411 are formed in the first reaction vessel 410a. The first inlet 412 is located under the first accommodation space 411 so as to be located below the water surface of the first aqueous solution 415. The first outlet 413 is positioned above the first reaction space 411 so as to be positioned above the water surface of the first aqueous solution 415. Carbon dioxide gas, which is used as a raw material during the discharge process, flows into the first reaction space 411 through the first inlet 412, and the first aqueous solution 415 may also be introduced if necessary. The gas generated during the charging/discharging process is discharged to the outside through the first discharge port 413. Although not shown, the inlet 412 and the outlet 413 may be selectively opened and closed by a valve or the like during charging and discharging in a timely manner. In the cathode part 410, a carbon dioxide elution reaction occurs during a discharge process.

The anode part 450 includes a second reaction vessel 450a providing a second reaction space 451 therein, a second aqueous solution 455 contained in the second reaction space 451, and a second aqueous solution 455. ) Is provided with an anode 458 that is at least partially submerged. One end of the salt bridge 490 is immersed in the second aqueous solution 455. As the second aqueous solution 455, a high concentration alkaline solution is used, for example, 1M KOH or 6M KOH may be used. The anode 458 is an electrode made of a metal material constituting an electric circuit, and in this embodiment, it will be described that zinc (Zn) or aluminum (Al) is used as the anode 458. Further, as the anode 458, an alloy containing zinc or aluminum may be used.

Both ends of the salt bridge 490 are immersed in the first aqueous solution 415 and the second aqueous solution 455, respectively. As the internal solution of the salt bridge 490, a commonly used salt bridge internal solution such as potassium chloride (KCl) and sodium chloride (NaCl) may be used.

As the discharge progresses first aqueous solution 415, the HCO ₃ ^- if it contains a (bicarbonate ions) is generated, the internal solution of the salt bridge 490, sodium chloride (NaCl) and sodium ion (Na ⁺⁾ described above, the ion balance In order to match, sodium ions are diffused from the salt bridge 490 to exist as ions in the form of an aqueous solution of sodium hydrogen carbonate (NaHCO ₃ ). Drying this solution additionally obtains a sodium carbonate solid product in the form of baking soda.

9 is a schematic diagram showing a discharge process of a secondary battery according to an eighth embodiment of the present invention. Referring to FIG. 9, the secondary battery 400a includes a cathode part 410, an anode part 450, a salt bridge 490 connecting the cathode part 410 and the anode part 450, and a carbon dioxide treatment part 120. ), and a carbon dioxide circulation supply unit 130, and a connection pipe 140 for communicating the cathode unit 410 and the carbon dioxide treatment unit 120. The cathode part 410, the anode part 450, and the salt bridge 490 are the same as each of the corresponding configurations described in the embodiment shown in FIG. 8, and the carbon dioxide processing part 120, the carbon dioxide circulation supply part 130 and the connection Since the tube 140 is the same as each of the corresponding components shown in FIG. 3, a detailed description thereof will be omitted.

10 is a schematic diagram showing a discharging process of a secondary battery according to a ninth embodiment of the present invention. Referring to FIG. 10, the secondary battery 500 includes a reaction vessel 510 providing a reaction space 511 therein, an aqueous electrolyte solution 515 contained in the reaction space 511, and the reaction space 511. It includes a cathode 118 in which at least a part of the aqueous electrolyte solution 115 is immersed, and an anode 158 in which at least a part of the aqueous electrolyte solution 115 is immersed in the reaction space 511. The secondary battery 500 produces hydrogen gas (H ₂ ) by using carbon dioxide gas (CO ₂ ) as a raw material in the discharge process.

The reaction vessel 510 provides a reaction space 511 in which the aqueous electrolyte solution 515 is contained therein and the cathode 118 and the anode 158 are accommodated. The reaction vessel 510 is provided with a first inlet 512 and a first outlet 513 communicating with the reaction space 511. The first inlet 512 is located under the reaction space 511 so as to be located below the water surface of the aqueous electrolyte solution 515. The first outlet 513 is positioned above the reaction space 511 so as to be positioned above the water surface of the aqueous electrolyte solution 515. Carbon dioxide gas, which is used as a raw material in the discharge process, flows into the reaction space 511 through the first inlet 512, and if necessary, an aqueous electrolyte solution 515 may be introduced. The gas generated in the charging/discharging process is discharged to the outside through the first discharge port 513. Although not shown, the first inlet 512 and the first outlet 513 may be selectively opened and closed by a valve or the like during charging and discharging in a timely manner. In the reaction space 511, a carbon dioxide elution reaction occurs during a discharge process.

The aqueous electrolyte solution 515 is contained in the reaction space 511, and at least a portion of the cathode 118 and at least a portion of the anode 158 are submerged in the aqueous electrolyte solution 515. In this embodiment, it will be described that a basic solution or sea water is used as the aqueous electrolyte solution 515. The aqueous electrolyte solution 515 becomes weakly acidic by the carbon dioxide gas flowing through the first inlet 512 during the discharge process.

The cathode 118 is at least partially immersed in the aqueous electrolyte solution 515 in the reaction space 511. The cathode 118 is located relatively closer to the first inlet 512 than the anode 158 in the reaction space 511. The cathode 118 is an electrode for forming an electric circuit, and may be carbon paper, carbon fiber, carbon felt, carbon cloth, metal foam, metal thin film, or a combination thereof, and a platinum catalyst may also be used. In the case of catalysts, in addition to platinum catalysts, all other catalysts that can be generally used as hydrogen evolution (HER) catalysts, such as carbon-based catalysts, carbon-metal-based complex catalysts, and perovskite oxide catalysts, are also included. During discharge, a reduction reaction occurs in the cathode 118, and hydrogen is generated accordingly.

The anode 158 is at least partially immersed in the aqueous electrolyte solution 515 in the reaction space 511. The anode 158 is located relatively farther from the first inlet 512 than the cathode 118 in the reaction space 511. The anode 158 is an electrode made of a metal material constituting an electric circuit. In this embodiment, the anode 158 is used as vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), and nickel. (Ni), copper (Cu), aluminum (Al), or zinc (Zn) is described as being used. During discharge, an oxidation reaction occurs in the anode 158 according to a weakly acidic environment.

Now, the discharging process of the secondary battery 100 described above based on the configuration will be described in detail. 10 shows a discharge process of the secondary battery 500 together. Referring to FIG. 10, during discharge, carbon dioxide gas is injected into the aqueous electrolyte solution 515 through a first inlet 512, and a chemical elution reaction of carbon dioxide as shown in [Scheme 3] is performed in the reaction space 511. That is, the carbon dioxide supplied to the reaction chamber (511) (CO ₂₎ is an aqueous electrolyte solution (515) of water (H ₂ O) and spontaneous hydrogen cations through a chemical reaction (H ⁺⁾ and bicarbonate (HCO ₃ ^-) is generated do.

In addition, in the cathode 118, an electrical reaction as shown in [Scheme 4] is performed. That is, the cathode 118, the hydrogen cation in the vicinity (H ⁺⁾ are electron (e ^-) from the cathode (118) is takes the hydrogen (H ₂₎ gas is generated. The generated hydrogen (H ₂ ) gas is discharged to the outside through the first outlet 513.

In addition, around the cathode 118, a complex hydrogen generation reaction as shown in [Scheme 5] is performed.

In addition, in the anode 158, when the anode 158 is zinc (Zn), an oxidation reaction as shown in [Scheme 6] is performed.

As a result, when the anode 158 is zinc (Zn), the overall reaction equation made in the discharging process is the same as in [Scheme 7].

If, in the anode 158, the anode 158 is aluminum (Al), the oxidation reaction as in [Scheme 8] is performed.

As a result, when the anode 158 is aluminum (Al), the overall reaction equation made in the discharging process is the same as in [Scheme 9].

As a result, hydrogen ions generated by carbon dioxide eluted in the aqueous electrolyte aqueous solution 515 during discharge receive electrons from the cathode 118 and are reduced to hydrogen gas, and are discharged through the first outlet 513, and the metal anode ( 158) changes to the form of oxide.

11 is a schematic diagram showing a discharging process of a secondary battery according to a tenth embodiment of the present invention. Referring to FIG. 11, the secondary battery 500a includes a reaction vessel 510 providing a reaction space 511 therein, an aqueous electrolyte solution 515 contained in the reaction space 511, and the reaction space 511. A cathode 118 in which at least a portion is immersed in the aqueous electrolyte 515, an anode 158 in which at least a part is immersed in the aqueous electrolyte solution 515 in the reaction space 511, and a carbon dioxide processing unit 120 And, it includes a carbon dioxide circulation supply unit 130, and a connection pipe 140 connecting the reaction vessel 510 and the carbon dioxide processing unit 120. The reaction vessel 510, the aqueous electrolyte solution 515, the cathode 118, and the anode 158 are the same as each of the corresponding configurations described in the embodiment shown in FIG. 10, and the carbon dioxide processing unit 120, carbon dioxide circulation Since the supply unit 130 and the connection pipe 140 are the same as each of the corresponding components shown in FIG. 3, a detailed description thereof will be omitted.

Although the present invention has been described through the above embodiments, the present invention is not limited thereto. The above embodiments may be modified or changed without departing from the spirit and scope of the present invention, and those skilled in the art will recognize that such modifications and changes also belong to the present invention.

100: secondary battery 110: cathode
111: first reaction space 112: first inlet
113: first outlet 115: first aqueous solution
118: cathode 120: carbon dioxide processing unit
121: third accommodation space 122: second inlet
123: communication port 124: second outlet
130: carbon dioxide circulation supply unit 140: connection pipe
150: anode part 151: second reaction space
155: second aqueous solution 158: anode
190: connection part 191: connection passage
192: ion transmission member 1000: submarine power generation system
1400: fuel cell 1500: reformer

Claims (12)

A reformer that produces hydrogen-rich reformed gas from hydrogen-containing fuel and generates carbon dioxide gas as a by-product;
A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And
It includes a fuel cell that receives the reformed gas produced from the reformer and the hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine,
The secondary battery includes a first aqueous solution accommodated in a first reaction space, a cathode at least partially immersed in the first aqueous solution, a basic second aqueous solution accommodated in a second reaction space, and at least a part of the second aqueous solution. The anode is submerged, a connection passage for communicating the first reaction space and the second reaction space, and a porosity that is installed in the connection passage to block movement of the first aqueous solution and the second aqueous solution while allowing the movement of ions It has an ion transport member of the structure,
In the discharging process of the secondary battery, hydrogen ions and bicarbonate ions are generated by the reaction of water in the first aqueous solution and the carbon dioxide gas, and hydrogen gas supplied to the fuel cell is combined with the hydrogen ions and electrons of the cathode. Power generation systems for submarines that occur. A reformer that produces hydrogen-rich reformed gas from hydrogen-containing fuel and generates carbon dioxide gas as a by-product;
A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And
It includes a fuel cell that receives the reformed gas produced from the reformer and the hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine,
The secondary battery includes a first reaction space, an accommodation space in communication with the first reaction space, a first aqueous solution accommodated in the first reaction space and the accommodation space, and the first aqueous solution in the first reaction space A cathode at least partially submerged in the second reaction space, a basic second aqueous solution accommodated in the second reaction space, an anode at least partially submerged in the second aqueous solution, the first reaction space and the second And a connection passage for communicating the reaction space, and an ion transfer member having a porous structure installed in the connection passage to allow only movement of ions between the first and second aqueous solutions,
In the discharging process of the secondary battery, carbon dioxide gas generated in the reformer is introduced into the first aqueous solution in the accommodation space, and hydrogen ions and bicarbonate ions are generated by the reaction of the water in the first aqueous solution and the carbon dioxide gas. 1 In the reaction space, the hydrogen ions and electrons of the cathode are combined to generate hydrogen gas supplied to the fuel cell,
A power generation system for a submarine that prevents non-ionized carbon dioxide gas from the carbon dioxide gas flowing into the first aqueous solution in the accommodation space from being separated from the first aqueous solution in the accommodation space and supplied to the first reaction space. The method according to claim 1 or 2,
The material of the ion transmission member is a submarine power production system of glass. The method according to claim 1 or 2,
Pore formed in the ion transmission member is 40 to 90 microns, 15 to 40 microns, 5 to 15 microns, or 1 to 2 microns power production system for a submarine. A reformer that produces hydrogen-rich reformed gas from hydrogen-containing fuel and generates carbon dioxide gas as a by-product;
A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And
It includes a fuel cell that receives the reformed gas produced from the reformer and the hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine,
The secondary battery includes a first aqueous potassium hydroxide solution accommodated in a first reaction space, a cathode at least partially submerged in the first potassium hydroxide aqueous solution, a second aqueous potassium hydroxide solution accommodated in a second reaction space, and the second An anode at least partially immersed in an aqueous potassium hydroxide solution, a connection passage for communicating the first reaction space and the second reaction space, and a connection passage provided in the connection passage between the first aqueous potassium hydroxide solution and the second aqueous potassium hydroxide solution It has an ion exchange membrane that allows only the movement of ions,
In the discharging process of the secondary battery, carbon dioxide gas generated in the reformer is introduced into the first potassium hydroxide aqueous solution, and hydrogen ions and bicarbonate ions are generated by the reaction of water in the first potassium hydroxide aqueous solution and the carbon dioxide gas. A power production system for a submarine in which hydrogen ions and electrons of the cathode are combined to generate hydrogen gas supplied to the fuel cell. A reformer that produces hydrogen-rich reformed gas from hydrogen-containing fuel and generates carbon dioxide gas as a by-product;
A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And
It includes a fuel cell that receives the reformed gas produced from the reformer and the hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine,
The secondary battery includes a first reaction space, an accommodation space in communication with the first reaction space, a first aqueous potassium hydroxide solution accommodated in the first reaction space and the accommodation space, and the first reaction space in the first reaction space. 1 A cathode at least partially immersed in an aqueous potassium hydroxide solution, a second reaction space, a second aqueous potassium hydroxide solution accommodated in the second reaction space, an anode at least partially immersed in the second aqueous potassium hydroxide solution, and the first A connection passage for communicating the reaction space and the second reaction space, and an ion exchange membrane installed in the connection passage to allow only movement of ions between the first aqueous potassium hydroxide solution and the second aqueous potassium hydroxide solution,
During the discharging process of the secondary battery, carbon dioxide gas generated in the reformer is introduced into the first potassium hydroxide aqueous solution in the accommodation space, and hydrogen ions and bicarbonate ions are generated by the reaction of water in the first potassium hydroxide aqueous solution and the carbon dioxide gas. In the first reaction space, the hydrogen ions and electrons of the cathode are combined to generate hydrogen gas supplied to the fuel cell,
A power production system for a submarine that prevents non-ionized carbon dioxide gas from the carbon dioxide gas flowing into the first potassium hydroxide aqueous solution in the accommodation space from being separated from the first potassium hydroxide aqueous solution in the accommodation space and supplied to the first reaction space . The method according to claim 5 or 6,
The ion exchange membrane is a power production system for a submarine that allows potassium ions to move from the second reaction space to the first reaction space. The method according to claim 5 or 6,
The ion exchange membrane is a power production system for a submarine that allows hydroxide ions to move from the first reaction space to the second reaction space. A reformer that produces hydrogen-rich reformed gas from hydrogen-containing fuel and generates carbon dioxide gas as a by-product;
A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And
It includes a fuel cell that receives the reformed gas produced from the reformer and the hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine,
The secondary battery includes a first aqueous solution accommodated in a first reaction space, a cathode at least partially immersed in the first aqueous solution, a basic second aqueous solution accommodated in a second reaction space, and at least a part of the second aqueous solution. And a salt bridge connecting the first aqueous solution and the second aqueous solution, and a submerged anode,
In the discharging process of the secondary battery, carbon dioxide gas generated in the reformer is introduced into the first aqueous solution, hydrogen ions and bicarbonate ions are generated by the reaction of water in the first aqueous solution and the carbon dioxide gas, and the hydrogen ions and the A power production system for a submarine in which electrons of a cathode are combined to generate hydrogen gas supplied to the fuel cell. A reformer that produces hydrogen-rich reformed gas from hydrogen-containing fuel and generates carbon dioxide gas as a by-product;
A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And
It includes a fuel cell that receives the reformed gas produced from the reformer and the hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine,
The secondary battery includes a first reaction space, an accommodation space in communication with the first reaction space, a first aqueous solution accommodated in the first reaction space and the accommodation space, and the first aqueous solution in the first reaction space A cathode at least partially submerged in, a second reaction space, a basic second aqueous solution accommodated in the second reaction space, an anode at least partially submerged in the second aqueous solution, the first aqueous solution and the second aqueous solution It has a salt bridge connecting the,
In the discharging process of the secondary battery, carbon dioxide gas generated in the reformer is introduced into the first aqueous solution in the accommodation space, and hydrogen ions and bicarbonate ions are generated by the reaction of the water in the first aqueous solution and the carbon dioxide gas. 1 In the reaction space, the hydrogen ions and electrons of the cathode are combined to generate hydrogen gas supplied to the fuel cell,
A power generation system for a submarine that prevents non-ionized carbon dioxide gas from the carbon dioxide gas flowing into the first aqueous solution in the accommodation space from being separated from the first aqueous solution in the accommodation space and supplied to the first reaction space. A reformer that produces hydrogen-rich reformed gas from hydrogen-containing fuel and generates carbon dioxide gas as a by-product;
A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And
It includes a fuel cell that receives the reformed gas produced from the reformer and the hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine,
The secondary battery includes an aqueous electrolyte accommodated in a reaction space, a cathode at least partially submerged in the aqueous electrolyte in the reaction space, and an anode at least partially submerged in the aqueous electrolyte in the reaction space,
During the discharging process of the secondary battery, carbon dioxide gas generated from the reformer is introduced into the aqueous electrolyte, hydrogen ions and bicarbonate ions are generated by the reaction of water in the aqueous electrolyte and the carbon dioxide gas, and the hydrogen ions and electrons of the cathode The power production system for a submarine is combined to generate hydrogen gas supplied to the fuel cell. A reformer that produces hydrogen-rich reformed gas from hydrogen-containing fuel and generates carbon dioxide gas as a by-product;
A secondary battery for generating hydrogen gas using carbon dioxide generated in the reformer as a raw material together with electric energy used as power of the submarine during the discharge process; And
It includes a fuel cell that receives the reformed gas produced from the reformer and the hydrogen gas generated from the secondary battery to produce electric energy used as power of a submarine,
The secondary battery includes a reaction space, an accommodation space in communication with the reaction space, an aqueous electrolyte accommodated in the reaction space and the accommodation space, a cathode at least partially submerged in the aqueous electrolyte in the reaction space, and the reaction An anode at least partially immersed in the aqueous electrolyte in space,
In the process of discharging the secondary battery, carbon dioxide gas generated in the reformer is introduced into the aqueous electrolyte in the accommodation space, and hydrogen ions and bicarbonate ions are generated by the reaction of water in the aqueous electrolyte and the carbon dioxide gas, and in the reaction space The hydrogen ions and electrons of the cathode are combined to generate hydrogen gas supplied to the fuel cell,
A power generation system for a submarine in which non-ionized carbon dioxide gas among the carbon dioxide gas flowing into the aqueous electrolyte in the accommodation space is separated from the aqueous electrolyte in the accommodation space and is not supplied to the reaction space.

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