CN202067864U - Air electrode of zinc-air battery - Google Patents
Air electrode of zinc-air battery Download PDFInfo
- Publication number
- CN202067864U CN202067864U CN2011201404343U CN201120140434U CN202067864U CN 202067864 U CN202067864 U CN 202067864U CN 2011201404343 U CN2011201404343 U CN 2011201404343U CN 201120140434 U CN201120140434 U CN 201120140434U CN 202067864 U CN202067864 U CN 202067864U
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- air
- battery
- zinc
- water
- layer
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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
The utility model discloses an air electrode of a zinc-air battery, which comprises a current collecting body, a catalyst layer, an air diffusion layer and a water-proof layer, The catalyst layer and the air diffusion layer are respectively formed on two sides of the current collecting body in roll-in mode, and the water-proof layer is rolled on one side of the air diffusion layer. The air diffusion layer is rolled on the current collecting body, and the water-proof layer is rolled on one side of the air diffusion layer which is rolled on the current collecting body. Therefore, the air electrode of the zinc-air battery can effectively prevented from being dried due to volatilization of water inside the battery and can prevent water in the air from entering the inside of the battery and diluting electrolyte. Air can dispersedly enter the inside of the battery for corresponding reaction.
Description
Technical field
The utility model belongs to the air electrode of zinc-air cell technical field, particularly a kind of zinc-air cell.
Background technology
Air electrode is the key technology of zinc-air cell, and the air electrode of present high-performance zinc-air cell is generally " sandwich " structure of thin layer, is made up of air diffusion layer, collector body, Catalytic Layer.Air electrode places battery case inside, has the air inlet hole on the battery case, and the air of outside enters air electrode inside by this air inlet hole through air diffusion layer, carries out chemical reaction by the oxygen in the Catalytic Layer absorbed air.
But adopt the zinc-air cell that air electrode was assembled into of this spline structure, usually there is the moisture evaporation of inside battery and causes the dry and water in air branch of battery to enter inside battery and the problem of dilute electrolyte has had a strong impact on the useful life of zinc-air cell and giving full play to of superior function thereof.
The utility model content
The purpose of this utility model provides a kind of air electrode of zinc-air cell, and it can prevent the moisture evaporation of inside battery effectively and cause battery dry and prevent that the water in air branch from entering inside battery and dilute electrolyte.
The technical solution adopted in the utility model is as follows:
A kind of air electrode of zinc-air cell comprises that collector body and difference roll-in at the Catalytic Layer and the gas diffusion layers of described collector body both sides, also comprise watertight composition, and described watertight composition roll-in is in a side of described gas diffusion layers.
Described watertight composition comprises hydrophobic polymeric material and calcium bromide hygroscopic material.
Described collector body is hole wire netting or the metal foam that conducting metal is made.
Described Catalytic Layer is made up of oxygen reduction catalyst, hydrophobic polymeric material and catalyst carrier carbon black.
Described gas diffusion layers is made up of hydrophobic polymeric material, carbon black and pore-creating material.
Further, described hydrophobic polymeric material is polytetrafluoroethylene or polyvinylidene fluoride.
Described pore-creating material is sodium sulphate or carbonic hydroammonium.
The utility model is by at a side of roll-in gas diffusion layers on collector body roll-in watertight composition again, can effectively prevent the moisture evaporation of inside battery and causes battery dry and prevent that the water in air branch from entering inside battery and dilute electrolyte; And enter inside battery with making air dispersion, carry out chemical reaction by the oxygen in the Catalytic Layer absorbed air by electrolyte and zinc.
Description of drawings
Fig. 1 is the structural representation of the air electrode of the zinc-air cell that provides of the utility model embodiment;
Among the figure: 1-collector body, 2-Catalytic Layer, 3-gas diffusion layers, 4-watertight composition.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail below.
Referring to Fig. 1, a kind of air electrode of zinc-air cell comprises that collector body 1 and difference roll-in at the Catalytic Layer 2 and the gas diffusion layers 3 of described collector body 1 both sides, also comprise watertight composition 4, and described watertight composition 4 roll-ins are in a side of described gas diffusion layers 3.
Described watertight composition by macromolecular material polytetrafluoroethylgranule granule and hygroscopic material calcium bromide at roll squeezer through the roll-in film forming, described hydrophobic polymeric material also can adopt or polyvinylidene fluoride (PVDF).
Described collector body is 80 order stainless (steel) wires, also can adopt the metal wire netting or the metal foam of other conductivity to make.
Described Catalytic Layer is that oxygen reduction catalyst mangano-manganic oxide powder, carbon black and hydrophobic polymeric material polytetrafluoroethylene are mixed with mass ratio 4:4:2, forms through roll-in.
Described gas diffusion layers is made up of hydrophobic polymeric material, carbon black and pore-creating material, described hydrophobic polymeric material can be elected as in polytetrafluoroethylene (PTFE) or the polyvinylidene fluoride (PVDF) a kind of, described pore-creating material is a kind of in sodium sulphate or the carbonic hydroammonium, and wherein carbon black can adopt acetylene black.
The utility model by roll-in gas diffusion layers one side of collector body again roll-in watertight composition is arranged, can effectively prevent the moisture evaporation of inside battery and cause battery dry and prevent that the water in air branch from entering inside battery and dilute electrolyte; And enter inside battery with making air dispersion, carry out chemical reaction by the oxygen in the Catalytic Layer absorbed air by electrolyte and zinc.
More than disclosed be the specific embodiment of this patent only, but this patent is not limited thereto, for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model principle, the distortion of making should be considered as belonging to the utility model protection range.
Claims (2)
1. the air electrode of a zinc-air cell is characterized in that, comprises that collector body and difference roll-in at the Catalytic Layer and the gas diffusion layers of described collector body both sides, also comprise watertight composition, and described watertight composition roll-in is in a side of described gas diffusion layers.
2. air electrode according to claim 1 is characterized in that, described collector body is hole wire netting or the metal foam that conducting metal is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201404343U CN202067864U (en) | 2011-05-05 | 2011-05-05 | Air electrode of zinc-air battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201404343U CN202067864U (en) | 2011-05-05 | 2011-05-05 | Air electrode of zinc-air battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202067864U true CN202067864U (en) | 2011-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201404343U Expired - Fee Related CN202067864U (en) | 2011-05-05 | 2011-05-05 | Air electrode of zinc-air battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202067864U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738472A (en) * | 2012-07-03 | 2012-10-17 | 北京中航长力能源科技有限公司 | Stable air electrode of zinc-air battery |
| CN108736019A (en) * | 2018-04-10 | 2018-11-02 | 云南铝业股份有限公司 | Metal fuel battery air electrode and preparation method thereof |
| CN109411768A (en) * | 2018-10-17 | 2019-03-01 | 东莞市中航华讯卫星技术有限公司 | The preparation method of air electrode |
| CN111180748A (en) * | 2020-01-16 | 2020-05-19 | 广州鹏辉能源科技股份有限公司 | Air electrode of air battery, preparation method of air electrode, air battery and electric device |
| CN112825356A (en) * | 2019-11-21 | 2021-05-21 | 中国科学院大连化学物理研究所 | Composite gas diffusion electrode and battery |
-
2011
- 2011-05-05 CN CN2011201404343U patent/CN202067864U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738472A (en) * | 2012-07-03 | 2012-10-17 | 北京中航长力能源科技有限公司 | Stable air electrode of zinc-air battery |
| CN108736019A (en) * | 2018-04-10 | 2018-11-02 | 云南铝业股份有限公司 | Metal fuel battery air electrode and preparation method thereof |
| CN109411768A (en) * | 2018-10-17 | 2019-03-01 | 东莞市中航华讯卫星技术有限公司 | The preparation method of air electrode |
| CN112825356A (en) * | 2019-11-21 | 2021-05-21 | 中国科学院大连化学物理研究所 | Composite gas diffusion electrode and battery |
| CN111180748A (en) * | 2020-01-16 | 2020-05-19 | 广州鹏辉能源科技股份有限公司 | Air electrode of air battery, preparation method of air electrode, air battery and electric device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20130505 |