TWI618260B - Method for making quantum battery with core-shell structure and the product thereof - Google Patents

Abstract

The invention provides a method for manufacturing a quantum battery with a core-shell structure, comprising: (a) depositing a first pole type electrode layer on a first conductive substrate; (b) depositing on the second conductive substrate opposite to the first pole type a second pole type electrode layer; (c) a slurry of an aqueous, polyalkoxy copolymer and an inorganic oxide powder; the polyalkoxy copolymer contains a hydrophilic segment and a hydrophobic segment, and each inorganic oxide powder is a core shell And comprising: n-type metal oxide particles and an insulating oxide layer covering the particles; (d) coating the slurry on the first and second electrode layers respectively to obtain a slurry film; (e) Drying each slurry film to obtain two precursor films; (f) illuminating each precursor film to obtain two pre-shaped films; and (g) after the step (f), bonding the pre-shaped films to become a charge A quantum battery with a core-shell structure is fabricated.

Description

Method for manufacturing quantum battery with core-shell structure and its products

The invention relates to a method for preparing a quantum battery, in particular to a method for preparing a quantum battery having a core-shell structure and an article thereof.

Referring to FIG. 1, an early publication number (hereinafter referred to as "the first case 1") discloses a quantum battery 1 comprising a glass substrate 11 and a first indium tin oxide formed on the glass substrate 11 (hereinafter referred to as ITO). An electrode 12, an n-type metal oxide semiconductor layer 13 formed on the first ITO electrode 12, and a charging layer 14 formed on the n-type metal oxide semiconductor layer 13 are formed on the charging layer 14. The p-type metal oxide semiconductor layer 15 and a second ITO electrode 16 formed on the p-type metal oxide semiconductor layer 15. The n-type metal oxide semiconductor layer 13 may be composed of titanium oxide (TiO ₂ ), tin dioxide (SnO ₂ ) or zinc oxide (ZnO); the p-type metal oxide semiconductor layer 15 may be made of nickel monoxide ( NiO) or copper iron ore type copper aluminum oxide (CuAlO ₂ ).

The first embodiment 1 also discloses the method for preparing the charging layer 14 by first mixing and stirring a fatty acid titanium and a silicone oil in a solvent to form a coating solution; then, in the n-type The coating solution is spin coated on the metal oxide semiconductor layer 13 to form a coating layer having a thickness of about 0.3 μm to 1 μm; subsequently, the coating layer is dried at a temperature of 50 ̊C. Further drying the coated layer at a temperature of 300 ̊C to 400 ̊C for 10 minutes to 1 hour, thereby decomposing the fatty acid titanium and the eucalyptus oil to form a charging layer as shown in FIG. 14. The charging layer 14 has a plurality of titanium dioxide fine particles 141 and an insulating film 142 of a silicon oxide covering the respective titanium oxide fine particles 141, so that the charging layer 14 has a core-shell structure. Finally, the charging layer 14 is illuminated with ultraviolet light to excite the carriers in each of the titanium dioxide particles 141.

The charging layer 14 can be obtained by the method disclosed in the foregoing. However, the charging layer 14 must be fired at a high temperature of 300 ̊C to 400 ̊C, and the first ITO electrode 12 will be affected by high temperature to cause an increase in sheet resistance, which not only increases the manufacturing cost due to the high temperature process, but also the manufacturing process. Very cumbersome. Further, the fatty acid titanium mixed with eucalyptus oil is subjected to high-temperature firing to thermally crack the fatty acid titanium into the titanium oxide fine particles 141, and the eucalyptus oil is reacted into an insulating film 142 of the bismuth resin to coat the titanium oxide fine particles 141, and the insulating film thereof 142 is liable to cause unevenness in thickness so that the problem of not completely coating the titanium oxide fine particles 141 occurs, and the stability of the performance of the element is lowered.

Further, the electrical measurement result of the quantum battery 1 prepared in the first case is shown in the early publication No. 2014/0320108 A1 (hereinafter referred to as the former case 2). The quantum battery 1 discharges the charging layer 14 by an open-circuit method in which the load resistance (R _L ) is greater than 10 GΩ after the charging layer 14 is charged to 1.5 V. As can be seen from the results of the electrical analysis shown in FIG. 12 of the foregoing case 2, the quantum battery 1 has only 1 V of output voltage remaining in the charging layer 14 in about 50 seconds, and the discharge time (~50 seconds) is still insufficient. .

As can be seen from the above description, the method for manufacturing a quantum battery having a core-shell structure to reduce the manufacturing cost and to improve the structure of the quantum battery to improve the stability of the element performance is a subject to be solved by those skilled in the related art.

Accordingly, it is an object of the present invention to provide a method of fabricating a quantum battery having a core-shell structure.

Another object of the present invention is to provide a method of fabricating a quantum battery having a core-shell structure.

Therefore, the method for fabricating a quantum battery having a core-shell structure comprises: (a) depositing at least one electrode layer of a first polarity on a first conductive substrate, thereby preparing a first electrode unit; (b) Depositing at least one electrode layer opposite to the first pole type of the first pole type on a second conductive substrate to thereby obtain a second electrode unit; (c) formulating a water-containing, polyalkoxy group a slurry of a copolymer and a plurality of inorganic oxide powders, the polyalkoxy copolymer having at least one hydrophilic segment and one hydrophobic segment, and each inorganic oxide powder has a core-shell structure, and each core-shell structure comprises an n-type metal And an oxide oxide layer covering the n-type metal oxide particles; (d) coating the slurry on the electrode layer of the first electrode unit and the electrode layer of the second electrode unit , respectively, obtaining a slurry film; (e) after the step (d), drying the slurry film to obtain two precursor films; (f) after the step (e), the precursor films Illuminating to obtain two pre-formed films; and (g) after the step (f), joining the pre-formed films to allow for bonding Such pre-charging layer formed into a film, and to prepare a core-shell structure of the quantum cell.

In addition, the quantum battery having the core-shell structure of the present invention is produced by the above-mentioned manufacturing method, and comprises a first electrode unit, a second electrode unit, and a charging layer. The first electrode unit has a first conductive substrate, and at least one electrode layer formed on the first conductive substrate and having a first pole type. The second electrode unit has a second conductive substrate, and at least one electrode layer formed on the second conductive substrate and opposite to the second pole type of the first pole type. The charging layer is interposed between the first electrode unit and the electrode layer of the second electrode unit and has a plurality of inorganic oxide powders. Each of the inorganic oxide powders has a core-shell structure, and a part of the inorganic powders are in contact with each other, and each of the core-shell structures includes an n-type metal oxide particle, and an insulating oxide layer covering the n-type metal oxide particles.

The effect of the invention is that only the low-temperature drying of the slurry layers is carried out, and the process of high-temperature firing is not required, the preparation method is simplified and the production cost is low; in addition, the inorganic oxide powders are essentially core-shell structures, and thus The film thickness of the charging layer 3 is easy to control, and the stability of charge and discharge is also high.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals. <Detailed Description of the Invention>

An embodiment of the method for fabricating a quantum-walled quantum cell according to the present invention comprises: (a) depositing at least one electrode layer 12 of a first polarity on a first conductive substrate 11, thereby preparing a first electrode unit. 1 (see FIG. 3); (b) depositing at least one electrode layer 22 opposite to the first pole type of the first pole type on a second conductive substrate 21, thereby preparing a second electrode unit 2 ( See Figure 4); (c) formulating a slurry 3c containing water, a polyalkoxylated polyol (also known as a polyalkoxy polyol) and a plurality of inorganic oxide powders 31, The polyalkoxy copolymer has at least one hydrophilic segment and a hydrophobic segment, and each inorganic oxide powder 31 has a core-shell structure, and each core-shell structure includes an n-type metal oxide particle 311. And an insulating oxide layer 312 (see FIG. 5) covering the n-type metal oxide particles 311; (d) applying the slurry 3c to the electrode layer 12 of the first electrode unit 1 and the first On the electrode layer 22 of the two electrode unit 2, respectively, to obtain a slurry film 3d (see Fig. 6); (e) after the step (d), drying the same The slurry film 3d thus obtains two precursor films 3e (see FIG. 7); (f) after the step (e), the precursor films 3e are illuminated to obtain two pre-shaped films 3f (see FIG. 8); (g) after the step (f), bonding the pre-formed films 3f so that the bonded pre-formed films 3f become a charging layer 3, and thereby producing a pattern as shown in FIGS. 9 and 10. A quantum battery with a core-shell structure.

Preferably, the first conductive substrate 11 of the first electrode unit 1 of the step (a) has a lower glass substrate 111 and a lower ITO layer 112 formed on the lower glass substrate 111, and the first pole type electrode The layer 12 is an n-type electrode layer composed of tungsten trioxide (WO ₃ ); the second conductive substrate 21 of the second electrode unit 2 of the step (b) has an upper glass substrate 211 and a thin glass substrate formed thereon. The upper ITO layer 212 on the substrate 211, and the second electrode type electrode layer 22 is a p-type electrode layer made of nickel oxide (NiO). The first conductive substrate 11 and the second conductive substrate 21 of the present invention are not limited to the use of the above ITO as a conductive layer, as long as it is a transparent conductive material having a sheet resistance of 1 Ω/unit area or less, such as graphene or blending. The aluminum oxide zinc oxide (AZO) may be substituted for the above ITO layers 112 and 212.

It should be additionally noted here (again to FIG. 5) that the hydrophilic segment in the polyalkoxy copolymer according to the step (c) of the first embodiment of the present invention is used to bind the water in the slurry 3c. And the hydrophobic section in the polyalkoxy copolymer is used to bind the inorganic oxide powder 31 in the slurry 3c. Therefore, the polyalkoxy copolymer of the step (c) is one selected from the group consisting of a diblock copolymer and a triblock copolymer; the n-type metal of the step (c) The oxide particles 311 are selected from titanium oxide particles, tin oxide particles or zinc oxide particles; the insulating oxide layer 312 of the step (c) is composed of cerium oxide (SiO ₂ ) or aluminum oxide (Al ₂ O ₃ ).

The polyalkoxy-based copolymer suitable for the step (c) of the first embodiment of the present invention is a three-stage copolymer; the n-type metal oxide particles 311 of the step (c) are titanium oxide particles; The insulating oxide layer is composed of yttrium oxide. In the first embodiment of the present invention, the three-stage copolymer (ie, polyalkoxy polyol) is a polyoxyethylene polyoxyethylene copolymer [(poly(ethylene glycol)-block-poly(propylene glycol)- Block-(poly(ethylene glycol); hereinafter referred to as PEG-PPG-PEG], but is not limited thereto.

Preferably, (see FIG. 6 again), the slurry film 3d of the step (d) is applied to the first electrode type electrode layer by spin coating at a rotation speed of 500 rpm to 2000 rpm. 12 is on the electrode layer 22 of the second pole type.

Preferably (see also FIG. 6 and FIG. 7), the step (e) is to bake the slurry film 3d through a furnace tube 4 at a temperature between 100 ° C and 200 ° C to make the slurry film 3d becomes the precursor film 3e; this step (f) illuminates the precursor films 3e with an ultraviolet light 5 to obtain the pre-formed films 3f.

Preferably (see also FIG. 5), the polyalkoxy copolymer is present in a weight percentage (wt%) of the slurry 3c of the first embodiment, and the water content is between 68.5 wt% and 78.5 wt%. The content of the substance is between 20.0% by weight and 30.0% by weight, and the content of the inorganic oxide powders 31 is between 1.5% by weight and 3.0% by weight. Further, the inorganic oxide powder 31 suitable for use in the first embodiment of the present invention is a composite hydrophobic layer using a core-shell structure having a composition of SiO ₂ (between 5 wt% and 15 wt%) / TiO ₂ (between 95 wt% and 85 wt%). Type powder. In other words, the higher the SiO ₂ content in each of the inorganic oxide powders 31 means that the particle diameter of the n-type metal oxide particles 311 of each of the inorganic oxide powders 31 is smaller, and the thickness of the insulating oxide layer 312 is higher. thick. In the first embodiment of the present invention, the particle diameter of the inorganic oxide powder 31 is between 10 nm and 50 nm.

In the detailed description of the method of the first embodiment, it can be known that the slurry film 3d only needs to be dried at 100 ° C to 200 ° C, and it is not necessary to be fired at 300 ° C or higher as in the case of the first case. In terms of the process, the present invention is simplified relative to the process of the first embodiment, and the inorganic oxide powder 31 itself is composed of n-type metal oxide particles (TiO ₂ particles) 311 and coated with n-type metal oxide particles 311. The insulating oxide layer (SiO ₂ ) 312 is formed, and the film thickness thereof is easily controlled as compared with the first case. In terms of the stability of the electrical properties of the device, the film thickness of the charging layer 3 of the first embodiment is easily controlled, and the stability of charge and discharge is also higher than that of the previous case 2. The results of the electrical tests related to the present invention are described later.

A first embodiment of a quantum-shell battery having a core-shell structure obtained by the method of the first embodiment of the present invention is as shown in FIG. 9 and FIG. 10, and includes the first electrode unit 1 and the second electrode unit. 2, and the charging layer 3.

The first electrode unit 1 has the first conductive substrate 11 and the electrode layer 12 formed on the first conductive substrate 11 and having a first polarity. The second electrode unit 2 has the second conductive substrate 21 and the electrode layer 22 formed on the second conductive substrate 21 opposite to the first pole type of the first pole type. The charging layer 3 is interposed between the first electrode unit 1 and the electrode layers 12 and 22 of the second electrode unit 3, and has the inorganic oxide powder 31, and each inorganic oxide powder 31 has the core-shell structure. And a part of the inorganic powder 31 is in contact with each other. Each of the core-shell structures includes the n-type metal oxide particles 311, and the insulating oxide layer 312 covering the n-type metal oxide particles 311.

The material of the n-type metal oxide particles 311 and the insulating oxide layer 312 of the first embodiment of the present invention, and the electrode layer 12 and the second electrode of the first electrode type of the first electrode unit 1 The second electrode type electrode layer 22 of the electrode unit 2 has been described above, and will not be further described herein.

Referring to FIG. 11, a second embodiment of the quantum battery having a core-shell structure of the present invention is substantially the same as the method of the first embodiment, and the structure thereof is substantially the same as The first embodiment is different in that the first electrode unit 1 has two first-pole electrode layers 12, and the first electrode unit 1 further has a second-pole electrode layer 13; The two electrode unit 2 has two second electrode type electrode layers 22, and the second electrode unit 2 further has a first electrode type electrode layer 23. The second electrode type electrode layer 13 of the first electrode unit 1 is sandwiched between the first electrode type electrode layers 12 of the first electrode unit 1; and the first electrode of the second electrode unit 2 The electrode layer 23 of the type is sandwiched between the second electrode type electrode layers 22 of the second electrode unit 2.

It should be additionally noted that the present invention mainly uses the reverse diode formed by the npn/core-shell structure of the first electrode unit 1 of the second embodiment to connect the pnp/core of the second electrode unit 2 in series. a positive diode formed by a shell structure to thereby solve the first embodiment (ie, a single pn diode) at a moment of discharge, whose battery output voltage is due to a pn diode barrier potential (potential barrier) The limit is to effectively increase the output voltage at the time of discharge.

<Starting raw materials and analytical equipment used>

PEG-PPG-PEG was EO20PO70EO20, model Pluronic P123, available from Sigma-Aldrich Co., Ltd.

These inorganic oxide powders 31 are hydrophobic titanium-titanium mixed oxide powders having a particle diameter of about 10 nm and having a composition of SiO ₂ (5 wt%) / TiO ₂ (95 wt%).

The electrical test was performed using a constant potential galvanometer model VersaSTAT4 from Princeton Applied Research.

<Specific Example 1 (E1)>

A specific example 1 (E1) of the method for producing a quantum battery having a core-shell structure and a product thereof according to the first embodiment of the above-described production method, the detailed production flow and parameters are explained below.

First, an ITO layer and a WO ₃ n-type electrode layer and a NiO p-type electrode layer are sequentially sputtered on the two glass substrates to respectively obtain one of the specific examples 1 (E1) first and second. Electrode unit. Next, 1 g of a hydrophobic hydrophobic cerium-titanium mixed oxide powder, 15 g of EO20PO70EO20, and 50 g of deionized water (DI water) were sufficiently mixed and stirred to prepare a slurry of the specific example 1 (E1); Here, the content of the hydrophobic type cerium-titanium mixed oxide powder, deionized water, and EO20PO70EO20 was 1.51% by weight, 75.76% by weight, and 22.73% by weight, respectively, based on the weight percentage of the slurry of the specific example 1 (E1). Subsequently, the slurry was applied onto the n-type electrode layer of WO ₃ and the p-type electrode layer of the NiO, respectively, to obtain a slurry film of the specific example 1 (E1). The slurry film of the specific example 1 (E1) was applied to the n-type electrode layer of the WO ₃ and the p-type electrode layer of the NiO at 500 rpm, respectively, and the slurry was completed at 2000 rpm. Film film. After the slurry film is completed, the slurry films are sequentially dried to obtain the two precursor films of the specific example 1 (E1), and the precursor film layers are illuminated by ultraviolet light having a wavelength of 254 nm. Two pre-formed films of the specific example 1 (E1) were obtained. Finally, the pre-shaped films were joined so that the bonded pre-formed films became a charging layer of the specific example 1 (E1), and thereby a quantum-shell structured quantum battery was obtained.

<Specific example 2 (E2)>

A specific example 2 (E2) of the method for producing a quantum battery having a core-shell structure and a product thereof is substantially the same as the specific example 1 (E1), and the difference is that the structure of the specific example 2 (E2) It is implemented in accordance with the second embodiment described above.

<Analysis data>

Fig. 12 shows the results of the stability test of the long-term charge and discharge of this specific example 1 (E1). Specifically, the specific example 1 (E1) of the present invention charges the charging layer for 3 hours at a constant current of 2 μA, and then discharges the charging layer with an open circuit of a load resistance (R _L ) of more than 10 GΩ. And set the output voltage at the time of discharge to 1V, that is, stop discharging. As can be seen from FIG. 12, the quantum battery of the specific example 1 (E1) has the advantage of fast charging at a voltage of 1 V when charging is started, and the discharge time can be maintained at least twice the charging time (up to 6) It is confirmed that the specific example 1 (E1) of the present invention has stable charge and discharge characteristics.

Fig. 13 shows a comparison of the charge and discharge test of the specific example 1 (E1) and the specific example 2 (E2). FIG. 13 is a charge and discharge of the specific example 1 (E1) and the specific example 2 (E2) in the same manner as the test conditions of FIG. 12, except that the specific examples (E1, E2) are at 120. After the charging time of seconds, it will be discharged immediately. In other words, the condition set in the discharge of Fig. 13 is substantially the same as the condition of the previous case 2. As can be seen from FIG. 13, the extent to which the voltage of the specific example 2 (E2) rapidly drops at the moment of discharge is much slower than that of the specific example 1 (E1), and it is confirmed that the specific example 2 (E2) has higher than the specific example 1 ( E1) loss Output voltage. In addition, as can be seen from FIG. 13, the specific example 1 (E1) can be as long as 80 seconds when discharged to its output voltage of 1 V, which is relatively higher than 50 seconds of the previous case 2.

In summary, the method for manufacturing a quantum battery having a core-shell structure and the product thereof need only dry the slurry layer 3d at a temperature of 100 ° C to 200 ° C, and the process of the high-temperature firing process is simplified. Further, since the inorganic oxide powder 31 is essentially a core-shell structure, the film thickness of the charging layer 3 is easily controlled, and the stability of charge and discharge is also high, so that the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the simple equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still Within the scope of the invention patent.

1‧‧‧First electrode unit

11‧‧‧First conductive substrate

111‧‧‧Under the glass plate

112‧‧‧Under ITO layer

12‧‧‧First-pole electrode layer

13‧‧‧Second pole electrode layer

2‧‧‧Second electrode unit

21‧‧‧Second conductive substrate

23‧‧‧First-pole electrode layer

3‧‧‧Charging layer

31‧‧‧Inorganic oxide powder

311‧‧‧n type metal oxide particles

312‧‧‧Insulating oxide layer

3c‧‧‧Slurry

3d‧‧‧Slurry film

3e‧‧‧Precursor film

211‧‧‧Upper glass plate

212‧‧‧Upper ITO layer

22‧‧‧Second pole electrode layer

3f‧‧‧Preformed film

4‧‧‧ furnace tube

5‧‧‧UV light

Other features and advantages of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a front elevational view showing the film structure of the quantum cell disclosed in the US Publication No. 2013/0276878 A1; 2 is a detailed view of a charging layer of the quantum battery of FIG. 1; FIG. 3 is a front elevational view showing a first step (a) of a first embodiment of the method for fabricating a quantum-shell structured quantum battery of the present invention; Is a front view showing a step (b) of the method of the first embodiment of the present invention; FIG. 5 is a front elevational view showing a step (c) of the method of the first embodiment of the present invention; FIG. 7 is a front elevational view showing a step (e) of the manufacturing method of the first embodiment of the present invention; FIG. 8 is a front view showing a first embodiment of the present invention; Illustrating a step (f) of the method of the first embodiment of the present invention; FIG. 9 is a front elevational view showing a step (g) of the method of the first embodiment of the present invention and a nucleation made by the method of the same Shell structure of quantum battery Figure 10 is a partial enlarged view of Figure 9 illustrating a charging layer of the quantum battery of the first embodiment of the present invention; Figure 11 is a front elevational view showing a quantum cell of the present invention having a core-shell structure Second Embodiment; FIG. 12 is a voltage (V) versus time (hour) graph illustrating the electrical properties of a specific example 1 (E1) of the quantum battery having the core-shell structure of the present invention; and FIG. 13 is a voltage ( V) vs. time (sec) graph, showing the electrical comparison of the specific example 1 (E1) and the specific example 2 (E2) of the quantum battery having the core-shell structure of the present invention.

Claims (10)

A method for manufacturing a quantum battery having a core-shell structure, comprising: (a) depositing at least one electrode layer of a first polarity on a first conductive substrate to thereby obtain a first electrode unit; (b) Depositing at least one electrode layer opposite to the second pole type of the first pole type on the second conductive substrate to obtain a second electrode unit; (c) formulating a water-containing, polyalkoxy copolymer And a slurry of a plurality of inorganic oxide powders, the polyalkoxy copolymer having at least one hydrophilic segment and one hydrophobic segment, and each inorganic oxide powder has a core-shell structure, and each core-shell structure comprises an n-type metal oxide And an insulating oxide layer covering the n-type metal oxide particles; (d) coating the slurry on the electrode layer of the first electrode unit and the electrode layer of the second electrode unit, thereby Obtaining a slurry film separately; (e) after the step (d), drying the slurry film to obtain two precursor films; (f) after the step (e), illuminating the precursor film layers Thereby obtaining two pre-shaped films; and (g) after the step (f), joining the pre-shaped films to make the bonded Such pre-charging layer formed into a film, and to prepare a core-shell structure of the quantum cell. The method for producing a quantum-shell battery having a core-shell structure according to claim 1, wherein the polyalkoxy-based copolymer of the step (c) is one selected from the group consisting of a two-stage copolymer and a three-stage copolymer. The n-type metal oxide particles of the step (c) are selected from the group consisting of titanium oxide particles, tin oxide particles or zinc oxide particles; and the insulating oxide layer of the step (c) is composed of cerium oxide or aluminum oxide. The method for preparing a quantum battery having a core-shell structure according to claim 2, wherein the polyalkoxy copolymer of the step (c) is a three-stage copolymer; and the n-type metal oxide of the step (c) The particles are titanium oxide particles; the insulating oxide layer of the step (c) is composed of cerium oxide. The method for producing a quantum battery having a core-shell structure according to claim 3, wherein the three-stage copolymer is a polyoxypropylene polyoxyethylene copolymer. The method for producing a quantum-shell structured quantum battery according to claim 1, wherein the step (e) is baking the slurry layers at a temperature between 100 ° C and 200 ° C. The method for producing a core-shell structured quantum cell according to any one of claims 1 to 5, wherein the water content is between 68.5 wt% and 78.5 wt%, based on the weight percentage of the slurry. The content of the polyalkoxy copolymer is between 20.0% by weight and 30.0% by weight, and the content of the inorganic oxide powders is between 1.5% by weight and 3.0% by weight. A quantum battery having a core-shell structure, comprising: a first electrode unit having a first conductive substrate and at least one electrode layer formed on the first conductive substrate and having a first pole type; and a second electrode unit Having a second conductive substrate and at least one electrode layer formed on the second conductive substrate and opposite to the second pole type of the first pole type; and a charging layer sandwiched between the first electrode unit And the electrode layer of the second electrode unit, and having a plurality of inorganic oxide powders, each of the inorganic oxide powders has a core-shell structure, and some of the inorganic oxide powders are in contact with each other, each The core-shell structure includes an n-type metal oxide particle and an insulating oxide layer covering the n-type metal oxide particle. The quantum battery having a core-shell structure according to claim 7, wherein the n-type metal oxide particles are selected from the group consisting of titanium oxide particles, tin oxide particles or zinc oxide particles; It is composed of cerium oxide or aluminum oxide. The quantum battery having a core-shell structure according to claim 7, wherein the first electrode type electrode layer of the first electrode unit is an n-type electrode layer, and the second electrode type of the second electrode unit is The electrode layer is a p-type electrode layer. The quantum battery having a core-shell structure according to any one of claims 7 to 9, wherein the first electrode unit has two electrode layers of a first polarity type, and the first electrode unit further has a first a second electrode type electrode layer, the second electrode type electrode layer of the first electrode unit is sandwiched between the first electrode type electrode layers of the first electrode unit; the second electrode unit has two second a pole electrode layer, wherein the second electrode unit further has a first pole type electrode layer, and the first pole type electrode layer of the second electrode unit is the second electrode sandwiched between the second electrode unit Polar electrode layer.