CN104518223A - Air electrode of zinc-air battery - Google Patents
Air electrode of zinc-air battery Download PDFInfo
- Publication number
- CN104518223A CN104518223A CN201310457127.1A CN201310457127A CN104518223A CN 104518223 A CN104518223 A CN 104518223A CN 201310457127 A CN201310457127 A CN 201310457127A CN 104518223 A CN104518223 A CN 104518223A
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- CN
- China
- Prior art keywords
- air
- zinc
- layer
- electric conductor
- carbon dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M12/00—Hybrid cells; Manufacture thereof
- H01M12/04—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type
- H01M12/06—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type with one metallic and one gaseous electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8605—Porous electrodes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Hybrid Cells (AREA)
Abstract
The invention provides an air electrode of a zinc-air battery. The air electrode comprises a water-proof and gas-permeable layer (1), a current collecting electric conductor (3), and a catalyst layer (4); a carbon dioxide absorption layer (2) is arranged between the water-proof and gas-permeable layer (1) and the current collecting electric conductor (3) via pressing; and the catalyst layer (4) is arranged on the other side of the current collecting electric conductor (3). According to the zinc-air battery, the carbon dioxide absorption layer is arranged between the water-proof and gas-permeable layer and the current collecting electric conductor via pressing, so that entering of carbon dioxide in the air into the interior of the zinc-air battery is prevented effectively, carbonation of alkaline electrolyte is avoided, and battery service life is prolonged.
Description
Technical field
The invention belongs to zinc-air cell technical field, particularly relate to a kind of air electrode of zinc-air cell.
Background technology
Air electrode is the key technology of zinc-air cell, and the air electrode of current high-performance zinc-air cell is generally " sandwich " structure of thin layer, is made up of waterproof ventilative layer, current collection conductor, Catalytic Layer.Air electrode is placed in battery case inside, and battery case has air inflow openings, and the air of outside, by this air inflow openings, dewaters through waterproof ventilative layer and enters air electrode inside, carry out chemical reaction by the oxygen in Catalytic Layer absorbed air.But the carbon dioxide in the air of such structure section office enters inside battery, and when the carbon dioxide in air is dissolved in alkaline electrolyte, alkaline electrolyte carbonating can be made, cause zinc electrode gas-evolving electrodes, reduce battery.
Summary of the invention
The object of the invention is to overcome the easy carbonating of existing zinc-air cell electrolyte and the problem reducing useful life.
For this reason, the invention provides a kind of air electrode of zinc-air cell, comprise waterproof ventilative layer, afflux electric conductor, Catalytic Layer, between described waterproof ventilative layer and afflux electric conductor, pressing has carbon dioxide absorption layer, and described Catalytic Layer is at the opposite side of afflux electric conductor.
Described waterproof ventilative layer is the loose structure be rolled into by polytetrafluoroethylene and acetylene black.
Described carbon dioxide absorption layer is dissolved in methyl alcohol by PVOH amine, then be applied to the porous silica surface of solids and obtain.
Described afflux electric conductor is the metal guide electrical network with pore structure.
Described Catalytic Layer is by catalyst, and polytetrafluoroethylene and the roll-in of catalyst carrier carbon black form.
The air electrode of zinc-air cell provided by the invention, its advantage is: this zinc-air cell is by pressing one deck carbon dioxide absorption layer between waterproof ventilative layer and afflux electric conductor, can effectively prevent the carbon dioxide in air from entering air cell inside, avoid alkaline electrolyte carbonating, improve battery.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is the structural representation of the air electrode of zinc-air cell of the present invention.
In figure: 1, waterproof ventilative layer; 2, carbon dioxide absorption layer; 3, afflux electric conductor; 4, Catalytic Layer.
Embodiment
Embodiment 1
The defect in useful life is reduced in order to overcome the easy carbonating of existing zinc-air cell electrolyte, present embodiments provide the air electrode of a kind of zinc-air cell shown in a kind of Fig. 1, comprise waterproof ventilative layer 1, afflux electric conductor 3, Catalytic Layer 4, between described waterproof ventilative layer 1 and afflux electric conductor 3, pressing has carbon dioxide absorption layer 2, and described Catalytic Layer 4 is at the opposite side of afflux electric conductor 3.
Air, as the negative electrode of this air cell, first removes the moisture in air through waterproof ventilative layer 1, absorbing the carbon dioxide in air, prevent carbon dioxide carbonating alkaline electrolyte through carbon dioxide absorption layer 2; Afterwards, enter Catalytic Layer 4 through 60 object nickel screen afflux electric conductors 3, there is electrode reaction in the oxygen in Catalytic Layer 4 absorbed air under catalyst action.
Embodiment 2
The waterproof ventilative layer 1 of this air electrode of zinc-air cell is the loose structure be rolled into by polytetrafluoroethylene (PTFE) and acetylene black, effectively can prevent the moisture in air from entering inside battery and dilute electrolyte, also can prevent the moisture evaporation of inside battery and cause battery to dry up.Described carbon dioxide absorption layer 2 is dissolved in methyl alcohol by PVOH amine, then be applied to the porous silica surface of solids and obtain, the solution that this process is concentrated, and PVOH amine has high surface area, greatly can increase the assimilation effect of carbon dioxide.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (4)
1. the air electrode of a zinc-air cell, comprise waterproof ventilative layer (1), afflux electric conductor (3), Catalytic Layer (4), it is characterized in that: between described waterproof ventilative layer (1) and afflux electric conductor (3), pressing has carbon dioxide absorption layer (2), described Catalytic Layer (4) opposite side in afflux electric conductor (3).
2. the air electrode of zinc-air cell as claimed in claim 1, is characterized in that: described waterproof ventilative layer (1) is the loose structure be rolled into by polytetrafluoroethylene and acetylene black.
3. the air electrode of zinc-air cell as claimed in claim 1, is characterized in that: described afflux electric conductor (3) is the metal guide electrical network with pore structure.
4. the air electrode of zinc-air cell as claimed in claim 1, is characterized in that: described Catalytic Layer (4) is formed by catalyst, polytetrafluoroethylene and the roll-in of catalyst carrier carbon black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310457127.1A CN104518223A (en) | 2013-09-30 | 2013-09-30 | Air electrode of zinc-air battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310457127.1A CN104518223A (en) | 2013-09-30 | 2013-09-30 | Air electrode of zinc-air battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104518223A true CN104518223A (en) | 2015-04-15 |
Family
ID=52793191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310457127.1A Withdrawn CN104518223A (en) | 2013-09-30 | 2013-09-30 | Air electrode of zinc-air battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104518223A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207192A (en) * | 2015-12-02 | 2016-12-07 | 昆明理工大学科技园有限公司 | There is carbon dioxide filter and inhale the metal-air battery electrode of layer |
| CN108346844A (en) * | 2018-01-16 | 2018-07-31 | 云南靖创液态金属热控技术研发有限公司 | A kind of metal fuel battery |
| CN110289387A (en) * | 2019-05-17 | 2019-09-27 | 宁波大学 | A kind of all solid state neutral zinc-air 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 |
| CN112054161A (en) * | 2020-09-21 | 2020-12-08 | 北京华业阳光新能源有限公司 | Porous zinc electrode, preparation method thereof and zinc-air battery comprising porous zinc electrode |
| CN113013422A (en) * | 2021-03-05 | 2021-06-22 | 蔚蓝(广东)新能源科技有限公司 | Can adsorb CO2Metal-air battery positive electrode film and its preparing method |
-
2013
- 2013-09-30 CN CN201310457127.1A patent/CN104518223A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207192A (en) * | 2015-12-02 | 2016-12-07 | 昆明理工大学科技园有限公司 | There is carbon dioxide filter and inhale the metal-air battery electrode of layer |
| CN108346844A (en) * | 2018-01-16 | 2018-07-31 | 云南靖创液态金属热控技术研发有限公司 | A kind of metal fuel battery |
| CN110289387A (en) * | 2019-05-17 | 2019-09-27 | 宁波大学 | A kind of all solid state neutral zinc-air 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 |
| CN112054161A (en) * | 2020-09-21 | 2020-12-08 | 北京华业阳光新能源有限公司 | Porous zinc electrode, preparation method thereof and zinc-air battery comprising porous zinc electrode |
| CN113013422A (en) * | 2021-03-05 | 2021-06-22 | 蔚蓝(广东)新能源科技有限公司 | Can adsorb CO2Metal-air battery positive electrode film and its preparing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20150415 |