CN1320978A - Respiratory gas electrode - Google Patents
Respiratory gas electrode Download PDFInfo
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- CN1320978A CN1320978A CN00104247A CN00104247A CN1320978A CN 1320978 A CN1320978 A CN 1320978A CN 00104247 A CN00104247 A CN 00104247A CN 00104247 A CN00104247 A CN 00104247A CN 1320978 A CN1320978 A CN 1320978A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
A respiratory gas electrode (hydrogen electrode or oxygen electrode) for fuel battery is composed of a casing, a gas cavity, a porous electrode and a electrolyte cavity. Said gas cavity is communicated with the electrolyte cavity only via the capillary tubes in the porous electrode. They are also communicated with a periodically varying pressure source to generate periodic "gas driving liquid" and "liquid driving gas" procedure, benefiting electrochemical reaction and speeding up mass transfer in porous electrode. As a result, the output power of battery is increased.
Description
The invention belongs to technical field of electrochemistry, particularly relate to the fuel cell electrode of spent gas.
Fuel cell with its energy conversion rate height, pollute features such as little, will become one of the most attractive energy in future.The 449th page and the 468th page principle and the structure of having introduced gas-diffusion electrode respectively in " mechanism of new electrochemical power sources introduction " (publishing house of Fudan University, 1992).Because the redox reaction of gas electrode occurs over just on the three phase boundary, the place of i.e. gentle contact when identical of Dao Dian solid phase, electrolyte, gas electrode extensively adopts porous material, normally with a side of porous material electrode to gas, the another side is to electrolyte, and under the capillary force effect, electrolyte forms meniscus in the capillary of electrode surface, be close to the stable three phase boundary of formation one deck on the surface of electrode thus, the electrode of this structure generally is called gas-diffusion electrode.The electrode reaction of existing gas-diffusion electrode is only carried out at the electrode outer surface basically, and the micropore inner surface of electrode almost is not utilized.Because porous material is lower than common solid material intensity, and electrode must reach certain thickness just can guarantee its intensity, obtain bigger electric energy, volume of battery will be very huge, thereby influence its application again.Along with the development of manufacturing technology,, fundamentally do not solve the low problem of unit volume power output though the porous material electrode is made book more more.
The course of reaction of gas-diffusion electrode generally includes dissolving, diffusion, absorption, electrochemical reaction, the product of gas and leaves electrode surface and enter steps such as electrolyte." power technology " magazine (the 80th page of 1997 the 21st phase the 2nd volume) is pointed out when summing up the existing technical problem underlying of domestic and international fuel cell, under the high current density condition of work, the gas transmission of electrode diffusion layer, draining (product of hydrogen oxygen cell) technology is one of key technology of keeping the fuel battery steady operation.Fuel cell is worked under high current density, must be accompanied by high-speed electrode reaction, leave away and the replenishing of reactant of electrode reaction product must be accelerated thereupon, and the mass transfer of prior art is generally just undertaken by diffusion way, electrolyte diffusion velocity in the porous electrode micropore is very slow, becomes the bottleneck of this mass transport process; Though have by to the stirring of electrolyte system or circulation to improve the method for mass transport process, as " fuel cell system " (Chemical Industry Press, 1996) the 4th page and " zinc-air cell progress " (Science Press, 1975) the relevant convection techniques of the 117th page of introduction, but from the fluid mechanics viewpoint, above-mentioned stirring or circulation can only be played the effect of accelerating mass transport process to the electrolyte of porous electrode outer surface, and it is little to extending influence of the electrolyte in the porous electrode micropore, can not satisfy the requirement of the quick mass transfer in the electrode micropore, so the mass transfer of accelerating in the electrode micropore is crucial.So far do not see the report of the method that can effectively improve the diffusion of porous electrode micropore electrolyte inside.
The problems referred to above at the prior art existence, the present invention proposes a kind of gas electrode that adopts the type of respiration convection type, by the displacement campaign of gas-liquid two-phase in the porous electrode micropore, be formed with the three phase boundary that is beneficial to gas participation reaction at electrode micropore inner surface, and promote the drainage of the additional and product of reactant; Both enlarge reaction compartment, can keep high electrode reaction speed again, electrode can be worked under high current density, finally improved the fuel cell output power of unit volume.
Fig. 1 is the structural representation of respiratory gas electrode of the present invention.
This respiratory gas electrode, be characterised in that and comprise that shell 1, air chamber 2, porous electrode 3 and electrolyte cavities 4 constitute, porous electrode 3 is contained in the shell 1, shell 1 is separated into air chamber 2 and electrolyte cavities 4, its one side, porous side is to air chamber 2, the another side is to electrolyte cavities 4, and other side-closed only is connected by the capillary in the porous electrode 3 between air chamber 2 and the electrolyte cavities 4; Described air chamber 2 or electrolyte cavities 4 link to each other with periodically variable pressure source 5.
During electrode work, dress participates in the gas of electrode reaction in the air chamber 2, and dress participates in the electrolyte of electrode reaction in the electrolyte cavities 4, forms a single electrode of fuel cell.
Described periodically variable pressure source 5 can adopt multiple mode to realize, as piston type, compressor formula or compressor and suction machine coordinated type.
The basic principle and the working method of respiratory gas electrode of the present invention are as follows:
Under the effect of periodically variable pressure source 5, the pressure in air chamber 2 or the electrolyte cavities 4 is cyclic variation, makes the gas drive liquid (being referred to as to inhale) and the periodically displacement campaign of liquid purging (being referred to as to exhale) that produce gas-liquid two-phase in the porous electrode 3.
When air chamber 2 internal pressures during greater than electrolyte cavities 4 internal pressures, gas forward position or gas-liquid interface 6 are advanced into the boundary of porous electrode 3 and electrolyte cavities 4 from the air chamber 2 and the micropore of boundary through porous electrode 3 in of porous electrode 3, and this is the electrode breathing process.In this course, gas is discharged the liquid in the micropore in the porous electrode 3; Because also exist remaining electrolyte on the electrode skeleton, gas is present in the porous channel, help the broad three phase region that gas participates in reaction thereby formed in the micropore in porous electrode 3.
When the pressure in the air chamber 2 during less than the pressure in the electrolyte cavities 4, gas-liquid interface 6 moves to the boundary of air chamber 2 with porous electrode 3 from the boundary of porous electrode 3 with electrolyte cavities 4, and this is the electrode exhalation process.Electrolyte replenishes in the micropore of porous electrode in this process.
Because electrochemical reaction descends the reactant concentration of gas-liquid two-phase in porous electrode 3 micropores, product concentration rises; By the displacement campaign of above-mentioned gas-liquid two-phase, fresh fuel gas and electrolyte are constantly replaced in the micropore that replenishes porous electrode 3 into, and product constantly is discharged from the micropore of porous electrode 3 simultaneously, and therefore electrochemical reaction carries out smoothly.Determine that the pressure size of air chamber 2 intercycle variations and the principle of pressure action time are gas-liquid interface 6 only to be moved back and forth and gas-liquid interface is entered in electrolyte cavities 4 or the air chamber 2, can adopt experimental technique to determine in the micropore of porous electrode 3.
Can be provided with hydrophilic thin air film 7 between porous electrode 3 and the electrolyte cavities 4, for example fixedly one deck asbestos film or nylon cloth enter electrolyte cavities 4 to prevent gas.Because after gas enters electrolyte cavities 4, might migrate to another utmost point of battery and participate in reaction, thereby influence the operating efficiency of entire cell; Especially, if hydrogen oxygen cell, hydrogen or oxygen gas then has the possibility that sets off an explosion if take place to mix.
From above-mentioned analysis as can be known, the gas-liquid two-phase displacement process of respiratory gas electrode of the present invention inside is similar to the respiratory movement that animal is exhaled the old and inhale the new, have two big advantages: the one, because the type of respiration convection current is not only at electrode surface, particularly in the micropore of porous electrode, carry out, make electrochemical reaction can make full use of the inner surface of porous electrode micropore; Because the inner surface of porous electrode micropore is more much bigger than electrode outer surface, thereby enlarged the zone that gas participates in electrochemical reaction greatly; Bigger conversion zone helps increasing the current density of unit volume electrode output.The 2nd, the type of respiration convection type can be accelerated flowing of capillary liquid in pipe in the porous electrode by two-phase displacement campaign, thereby accelerate the drainage of the additional and product of reactant, keep high electrochemical reaction rates effectively, keep electrode and under high current density, work.So the fuel cell that adopts this respiratory gas electrode of the present invention to form, its output power of unit volume can improve greatly.
Below in conjunction with the description of drawings embodiments of the present invention.Wherein accompanying drawing 1 is the structural representation of respiratory gas electrode of the present invention; Accompanying drawing 2 is structural representations of embodiment 1 compressor formula respiratory gas electrode; Accompanying drawing 3 is structural representations of embodiment 2 compressors and suction machine coordinated type respiratory gas electrode; Accompanying drawing 4 is structural representations of embodiment 3 piston type respiratory gas electrodes.Accompanying drawing 5 is structural representations of embodiment 4 cell liquor pump coordinated type type of respiration air electrodes.
Embodiment 1: a kind of execution mode of compressor formula respiratory gas electrode.
The present embodiment respiratory gas electrode, its periodically variable pressure adopts compressor to produce.This periodically variable pressure source 5 is made up of electromagnetically operated valve 9, high pressure gas holder 10, compressor 11, lower pressure tanks 12, electromagnetically operated valve 13 and timing system 14, as shown in Figure 2, air chamber 2 adopts flange and seal cover 15 to be connected, two valves 16 are arranged on the seal cover 15, air chamber 2 is connected with periodically variable pressure source 5 by these two valves 16: 16 1 of these two valves pass through electromagnetically operated valve 9 and link with high pressure gas holder 10, and another is connected with lower pressure tanks 12 by another electromagnetically operated valve 13; Keep the pressure of high pressure gas holder 10 and lower pressure tanks 12 respectively by compressor 11.
The electrolyte that carries out in the electrolyte cavities 4 after the electrochemical reaction is evacuated to product separator 19 by pump 17, and separator 19 is sent isolated product into holding vessel 20; Electrolyte after product is removed in separation returns electrolyte storage tank 18.Electrolyte in the electrolyte storage tank 18 keeps debita spissitudo through replenishing electrolyte, constantly provides fresh electrolyte for electrolyte cavities 4.
Be fixed with one deck asbestos film between porous electrode 3 and the electrolyte cavities 4 as hydrophilic thin air film 7, enter electrolyte cavities 4 to prevent reaction gas.
Dress participates in the gas of electrode reaction in the high pressure gas holder 10; Dress participates in the electrolyte of electrode reaction in the electrolyte storage tank 18.With an act as a fuel electrode of battery of said structure.
As if high pressure gas holder 10 that hydrogen is packed into, above-mentioned electrode has just constituted the type of respiration hydrogen electrode.Equally, as if high pressure gas holder 10 that oxygen is packed into, above-mentioned electrode has just constituted the type of respiration oxygen electrode.
Can adopt flange to connect the electrolyte cavities 4 of above-mentioned hydrogen, oxygen electrode, the 40%KOH solution of packing in electrolyte storage tank 18 has just constituted a monocell of hydrogen oxygen fuel cell.
The concrete course of work is: greater than the pressure in the electrolyte cavities 4, the pressure in the lower pressure tanks 12 is less than the pressure in the electrolyte cavities 4 with the pressure in the compressor 11 control high pressure gas holders 10.By timing system two electromagnetically operated valves 9 of 14 controls and 13, another was in closed condition when one of them was opened.When electromagnetically operated valve 9 is opened, fuel gas in the high pressure gas holder 10 enters porous electrode 3 by air chamber 2, in porous electrode 3, produce gas drive liquid process, fresh fuel gas is pressed in the micropore of porous electrode 3 in this process, and gas-liquid interface moves to a side (position of gas-liquid interface 6 as shown in Figure 3) of close electrolyte behind certain hour from the side (position of gas-liquid interface 6 as shown in Figure 2) near air chamber 2 in porous electrode 3.Close electromagnetically operated valve 9, open electromagnetically operated valve 13 this moment, because pressure differential is reverse, the motion of liquid purging appears in the porous electrode 3, fresh electrolyte is inhaled in the micropore of porous electrode 3 in this process, gas-liquid interface moves to a side (position of gas-liquid interface 6 as shown in Figure 2) of close air chamber 2 behind certain hour from the side (position of gas-liquid interface 6 as shown in Figure 3) near electrolyte in porous electrode 3, the gas that reacted enters lower pressure tanks 12 by air chamber 2.Electromagnetically operated valve 13 cuts out then, electromagnetically operated valve 9 opens, the gas drive liquid movement of beginning next cycle.
Because the above-mentioned gas drive liquid that moves in circles, the respiratory movement of liquid purging, the three phase region of the electrochemical reaction that forms in porous electrode outer surface and micropore simultaneously is more much bigger than the individual layer three phase boundary that traditional gas-diffusion electrode only exists only in the electrode outer surface, increased the touch opportunity of gas, liquid and the surface of solids in the unit volume greatly, quickened the drainage of porous electrode surface and micropore internal reaction product simultaneously, keep high electrochemical reaction rates, thereby improve the current density of electrode unit volume output.The fuel cell output power of unit volume that is assembled by many groups type of respiration hydrogen electrode of the present invention and oxygen electrode also improves thereupon.
Embodiment 2: the execution mode of a kind of compressor and suction machine coordinated type respiratory gas electrode.With the electromagnetically operated valve 9 among the embodiment 1 (Fig. 2) replace with compressor 21, electromagnetically operated valve 13 replaces with suction machine 23, and compressor 11 is replaced with air accumulator 22, removes high pressure gas holder 10 and lower pressure tanks 12, promptly constitutes present embodiment.That is: the periodically variable pressure source 5 of present embodiment is by compressor 21, air accumulator 22, and suction machine 23, timing system 14 is formed; Air chamber 2 by two valves 16 successively with compressor 21, air accumulator 22, suction machine 23 connects, and forms gas return path; Startup by timing system 14 control compressors 21 and suction machine 23 and closing.
Electrolyte system is identical with embodiment 1: the electrolyte in the electrolyte cavities 4 through pump 17 to product separator 19; Isolated product is sent into holding vessel 20; Electrolyte after product is removed in separation returns electrolyte storage tank 18, is that electrolyte cavities 4 is replenished fresh electrolyte by electrolyte storage tank 18.
Be provided with nylon cloth between porous electrode 3 and the electrolyte cavities 4 as hydrophilic thin air film 7, enter electrolyte cavities 4 to prevent reaction gas.
Dress participates in the electrolyte of electrode reaction in the electrolyte storage tank 18; Storage of fuels gas in the air accumulator 21 as hydrogen or methane gas etc., constitutes type of respiration fuel gas electrode.If store oxygen in air accumulator 22 then constitutes the type of respiration oxygen electrode.
If air accumulator 22 is replaced with atmosphere, then constitute the type of respiration air electrode.
If the zinc powder that adopts the porous zine plate or circulate is another electrode, make electrolyte with 40%KOH solution, just can be assembled into zinc/air fuel cell with the type of respiration air electrode.
When compressor 21 work, suction machine 23 cuts out, Compressed Gas enters porous electrode 3 by air chamber 2, gas-liquid interface 6 moves right, close compressor 21 during to position shown in Figure 3 is opened suction machine 23, and gas-liquid interface 6 is moved to the left, close suction machine 23 during to position shown in Figure 2, this is a respiratory cycle.
Embodiment 3: a kind of execution mode of piston type respiratory gas electrode.
Present embodiment as shown in Figure 4, periodically variable pressure is realized by the reciprocating motion of piston in the cylinder 24.Seal cover 15 among the embodiment 1 (Fig. 2) is replaced with 25, two valves 16 of seal cover replace with three valves 26.Air chamber 2 links to each other by one in three valves 26 cylinder 24 with the band piston; Simultaneously, air chamber 2 by in three valves 26 in addition two link with one-way cock 27, gas separator 28, air accumulator 29, one-way cock 30 successively, form gas return path, all the other are identical with embodiment 1.
Can be provided with nylon cloth or asbestos film between porous electrode 3 and the electrolyte cavities 4 as hydrophilic thin air film 7, enter electrolyte cavities 4 to prevent reaction gas.Dress participates in the electrolyte of electrode reaction in the electrolyte storage tank 18.
If pack reacting gas hydrogen or oxygen in air accumulator 29, electrode then of the present invention constitutes piston type type of respiration hydrogen electrode or oxygen electrode respectively; If the electrolyte cavities 4 usefulness flanges of this type of respiration hydrogen electrode and oxygen electrode are connected, 40% the KOH solution of packing in electrolyte storage tank 18 has just constituted a monocell of hydrogen oxygen fuel cell; Because the reaction product of hydrogen oxygen fuel cell is a water, so for hydrogen oxygen fuel cell, can save gas separator 28.
If in air accumulator 29, pack other reacting gass into,, then constitute this fuel gas electrode of piston type type of respiration respectively as methane gas, natural gas etc.; This fuel gas electrode can with oxygen electrode by electrolyte system mutually joint group become fuel cell; Because the reaction product of this fuel cell is a carbon dioxide, so gas separator 28 need be installed between one-way cock 27 and air accumulator 29 to remove the carbon dioxide of discharging from one-way cock 27.
The motion of piston is an one-period with four strokes.First stroke: valve 27 and valve 30 are closed, piston moves right, gas is compressed, and gas-liquid interface 6 moves right to the side (position of gas-liquid interface 6 as shown in Figure 3) near electrolyte from the side (position of gas-liquid interface 6 as shown in Figure 2) near air chamber 1 in porous electrode 3.Second stroke: valve 27 and valve 30 are closed, piston is moved to the left, gas is sucked, and gas-liquid interface 6 is moved to the left a side (position of gas-liquid interface 6 as shown in Figure 2) of close air chamber 2 from the side (position of gas-liquid interface 6 as shown in Figure 3) near electrolyte in porous electrode.The 3rd stroke: valve 27 and valve 30 are opened, and piston moves right, because valve 27 and valve 30 are unidirectional valve, gas enters air accumulator 29 through valve 27 and pneumatic filter 28.Four-stroke-cycle, valve 27 and valve 30 are opened, and piston is moved to the left, and the gas in the air accumulator 29 enters air chamber 2.
Opening or closing of two valves can realize by cam gear, be similar on the automobile cylinder intake valve and vent valve.
When piston is done above-mentioned four-stroke-cycle reciprocating motion, in porous electrode, produce periodic gas drive liquid and liquid purging process, thereby improve the fuel cell output power of unit volume.
Embodiment 4: a kind of execution mode of cell liquor pump coordinated type type of respiration air electrode.
If the air chamber 2 among above-mentioned three embodiment is directly linked to each other with atmosphere, link to each other and periodically variable pressure source 5 changed into electrolyte cavities 4, promptly constitute present embodiment, as shown in Figure 5, this periodically variable pressure source 5 is by cell liquor pump 17, product separator 19, holding vessel 20, electrolyte storage tank 18, cell liquor pump 31 and timing system 14 are formed; Electrolyte cavities 4 successively with cell liquor pump 17, product separator 19, electrolyte storage tank 18, cell liquor pump 31 link to each other and constitute electrolyte loops; Product separator 19 is sent isolated product into holding vessel 20; Startup by timing system 14 control cell liquor pumps 17 and cell liquor pump 31 and closing.All the other are identical with embodiment 1.
Can be provided with nylon cloth or asbestos film between porous electrode 3 and the electrolyte cavities 4 as hydrophilic thin air film 7, enter electrolyte cavities 4 to prevent air.Air filter 32 can be installed to guarantee to enter the cleaning of air in the porous electrode 3 between air chamber 2 and the atmosphere.
Packing in electrolyte storage tank 18 participates in the electrolyte of electrode reaction, and above-mentioned respiratory gas electrode promptly becomes cell liquor pump coordinated type type of respiration air electrode.This air electrode can be formed fuel cell with fuel electrodes such as methane gas, natural gases, also can form zinc/air fuel cell with zinc.
When cell liquor pump 31 work, cell liquor pump 17 cuts out, electrolyte enters porous electrode 3 by electrolyte cavities 4, gas-liquid interface 6 is moved to the left, close cell liquor pump 31 during to position shown in Figure 2, open cell liquor pump 17, gas-liquid interface 6 moves right, close cell liquor pump 17 during to position shown in Figure 3, this is a respiratory cycle.
Claims (6)
1, a kind of respiratory gas electrode, be characterised in that and comprise that shell (1), air chamber (2), porous electrode (3) and electrolyte cavities (4) constitute, porous electrode (3) is contained in the shell (1), shell (1) is separated into air chamber (2) and electrolyte cavities (4), its one side, porous side is to air chamber (2), the another side is to electrolyte cavities (4), and other side-closed only is connected by the capillary in the porous electrode (3) between air chamber (2) and the electrolyte cavities (4); Described air chamber (2) or electrolyte cavities (4) link to each other with periodically variable pressure source (5).
2, respiratory gas electrode as claimed in claim 1, be characterised in that its periodically variable pressure source (5) is made up of electromagnetically operated valve (9), high pressure gas holder (10), compressor (11), lower pressure tanks (12), electromagnetically operated valve (13) and timing system (14), air chamber (2) is connected with high pressure gas holder (10) and lower pressure tanks (12) by electromagnetically operated valve (9) and electromagnetically operated valve (13) respectively by two valves (16), is kept the pressure of high pressure gas holder (10) and lower pressure tanks (12) respectively by compressor (11); Electrolyte in the electrolyte cavities (4) is evacuated to product separator (19) by pump (17), and isolated product is sent into holding vessel (20); Electrolyte after product is removed in separation returns electrolyte storage tank (18).
3, respiratory gas electrode as claimed in claim 1 or 2 is characterised in that its periodically variable pressure source (5) by compressor (21), air accumulator (22), and suction machine (23), timing system (14) is formed; Air chamber (2) by two valves (16) successively with compressor (21), air accumulator (22), suction machine (23) connect, and form gas return path; Startup by timing system (14) control compressor (21) and suction machine (23) and closing.
4, respiratory gas electrode as claimed in claim 1 or 2, be characterised in that its periodically variable pressure realized by the reciprocating motion of piston in the cylinder (24): described air chamber (2) links to each other with the cylinder (24) of being with piston by one in three valves (26); Simultaneously, air chamber (2) by in three valves (26) in addition two link with one-way cock (27), gas separator (28), air accumulator (29), one-way cock (30) successively, form gas return path.
5, respiratory gas electrode as claimed in claim 1, be characterised in that its periodically variable pressure source (5) by cell liquor pump (17), product separator (19), holding vessel (20), electrolyte storage tank (18), cell liquor pump (31) and timing system (14) are formed; Electrolyte cavities (4) successively with cell liquor pump (17), product separator (19), electrolyte storage tank (18), cell liquor pump (31) link to each other to constitute electrolyte loop; Product separator (19) is sent isolated product into holding vessel (20); Startup by timing system (14) control cell liquor pump (17) and cell liquor pump (31) and closing.
6,, be characterised in that between described porous electrode (3) and the electrolyte cavities (4) to be provided with hydrophilic thin air film (7) as claim 1,2,3,4 or 5 described respiratory gas electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00104247A CN1121078C (en) | 2000-04-21 | 2000-04-21 | Respiratory gas electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00104247A CN1121078C (en) | 2000-04-21 | 2000-04-21 | Respiratory gas electrode |
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| Publication Number | Publication Date |
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| CN1320978A true CN1320978A (en) | 2001-11-07 |
| CN1121078C CN1121078C (en) | 2003-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN00104247A Expired - Fee Related CN1121078C (en) | 2000-04-21 | 2000-04-21 | Respiratory gas electrode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244310A (en) * | 2011-05-19 | 2011-11-16 | 周建林 | Novel metal fuel battery |
| CN104977384A (en) * | 2015-06-24 | 2015-10-14 | 湖南大学 | Hydrogen and methane respiratory gas detection method |
| CN108183289A (en) * | 2018-01-16 | 2018-06-19 | 苏州讴德新能源发展有限公司 | A kind of portable air fuel cell |
-
2000
- 2000-04-21 CN CN00104247A patent/CN1121078C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244310A (en) * | 2011-05-19 | 2011-11-16 | 周建林 | Novel metal fuel battery |
| CN104977384A (en) * | 2015-06-24 | 2015-10-14 | 湖南大学 | Hydrogen and methane respiratory gas detection method |
| CN108183289A (en) * | 2018-01-16 | 2018-06-19 | 苏州讴德新能源发展有限公司 | A kind of portable air fuel cell |
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| Publication number | Publication date |
|---|---|
| CN1121078C (en) | 2003-09-10 |
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