CN102376936A - Lithium oxygen battery with porous cathode structure - Google Patents
Lithium oxygen battery with porous cathode structure Download PDFInfo
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- CN102376936A CN102376936A CN201110323910XA CN201110323910A CN102376936A CN 102376936 A CN102376936 A CN 102376936A CN 201110323910X A CN201110323910X A CN 201110323910XA CN 201110323910 A CN201110323910 A CN 201110323910A CN 102376936 A CN102376936 A CN 102376936A
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- porous
- oxygen
- lithium
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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
- Y02E60/10—Energy storage using batteries
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Abstract
The invention belongs to the technical field of the manufacture of a lithium oxygen battery, and discloses a lithium oxygen battery with a porous cathode structure. The battery has the structure that a porous lithium cathode is vertically arranged in the middle of an insulating housing and is sequentially provided with a first diaphragm, an organic electrolyte, a second diaphragm and a porous carbon anode, one side of the porous lithium cathode and one side of the porous carbon anode are respectively remained with a gas cavity, the insulating housing is arranged between two stainless steel housings and is fixed by a plurality of screws, the stainless steel housing which is adjacent to a cathode side is connected with a nitrogen valve, and the stainless steel housing which is adjacent to an anode side is connected with an oxygen valve. When the battery works, the nitrogen and the oxygen with the same flow and pressure are respectively ventilated into the cathode side and the anode side, so that the problem of the stop of electric discharge caused by the oxidization of the metal lithium and the corrosion of the cathode since the anode-side oxygen permeates into the cathode through the electrolyte during the discharge process of the lithium oxygen battery can be avoided.
Description
Technical field
The invention belongs to lithia pneumoelectric pond preparing technical field, be specifically related to a kind of porous negative pole structure lithia pneumoelectric pond.
Background technology
Lithia pneumoelectric pond is with its high theoretical specific energy and characteristic such as environmentally friendly and become the power conversion system that receives much concern at present.Lithia pneumoelectric pond is a kind ofly to make negative pole with the lithium metal, with the battery of oxygen as anode reactant.Its operation principle is discharge process: the lithium of anode becomes lithium cation after discharging electronics, and lithium ion passes electrolyte, combines to generate lithia (Li at negative electrode with oxygen and from the electronics that external circuit flows through
2O) or lithium peroxide (Li
2O
2), and stay negative electrode.Charging process: through the lead supplies electrons, lithium ion passes organic electrolyte and arrives negative terminal surface, and at the negative terminal surface generation lithium metal that reacts, the side of the positive electrode reaction generates oxygen, and the electronics of generation is supplied to lead.
Because lithia pneumoelectric pond is in discharge process, the unreacted oxygen of side of the positive electrode can see through electrolyte permeability to negative pole, and the oxidized metal lithium causes the negative pole corrosion, and final guiding discharge stops, thereby causes the decline of lithia pneumoelectric pond cycle performance.How to address the above problem, become the lithia pneumoelectric pond key in application of can succeeding.
Summary of the invention
The purpose of this invention is to provide a kind of porous negative pole structure lithia pneumoelectric pond; Overcome the unnecessary oxygen of side of the positive electrode and see through electrolyte permeability to negative pole, the oxidized metal lithium causes the negative pole corrosion; Final guiding discharge stops, thereby causes lithia pneumoelectric pond specific energy and the lower problem of cycle performance.
A kind of porous negative pole structure lithia pneumoelectric pond, porous lithium negative pole 1 vertically places the middle part of insulation shell 5, places first barrier film 2, organic electrolyte 3, second barrier film 12, porous carbon anodal 4 then successively; Porous lithium negative pole 1 respectively leaves air chamber with a side of porous carbon anodal 4; Insulation shell 5 places the centre of two Stainless Steel Shell 6; Fix through screw, near connecting nitrogen valve 7 on the Stainless Steel Shell 6 of negative side, near connecting oxygen valve 8 on the Stainless Steel Shell 6 of side of the positive electrode.
Said nitrogen valve 7 feeds nitrogen or argon gas, and the flow of nitrogen or argon gas is 5-5000mL/min, and pressure is 0.01-10MPa; Said oxygen valve 8 aerating oxygens, the flow of oxygen is 5-5000mL/min, pressure is 0.01-10MPa.
Beneficial effect of the present invention: battery of the present invention has overcome the unreacted oxygen of side of the positive electrode and has seen through electrolyte permeability to negative pole; The oxidized metal lithium; Cause the negative pole corrosion, final guiding discharge stops, thereby causes lithia pneumoelectric pond specific energy and cycle performance problem of lower.This structure lithia pneumoelectric pond negative pole adopts porous metals lithium, and the anodal porous carbon electrodes that adopts in the battery operated process, feeds the nitrogen and the oxygen of same traffic, pressure respectively at negative pole and side of the positive electrode.The oxidation of lithium metal be can effectively suppress, thereby the specific energy and the cycle performance of battery improved.
Description of drawings
Fig. 1 is a porous negative pole structure lithia pneumoelectric pond overall structure sketch map;
Among the figure, 1-porous lithium negative pole, 2-first barrier film, 3-organic electrolyte, 4-porous carbon positive pole, 5-insulation shell, 6-Stainless Steel Shell, 7-nitrogen valve, 8-oxygen valve, 9-fluid sealant, 10-gas piping, 11-spring, 12-second barrier film.
Fig. 2 is a porous lithium metal negative pole structure sketch map.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is further specified.
Embodiment 1
Present embodiment porous negative pole structure lithia pneumoelectric pool structure is as shown in Figure 1, and by porous lithium negative pole 1 (structure is as shown in Figure 2), barrier film 2, organic electrolyte 3, porous carbon positive pole 4, insulation shell 5, Stainless Steel Shell 6, nitrogen valve 7, oxygen valve 8 are formed.
Porous lithium negative pole 1 vertically places the middle part of insulation shell 5, places first barrier film 2, organic electrolyte 3, second barrier film 12, porous carbon anodal 4 then successively; Porous lithium negative pole 1 respectively leaves air chamber with a side of porous carbon anodal 4; Insulation shell 5 places the centre of two Stainless Steel Shell 6; Fix through screw, near connecting nitrogen valve 7 on the Stainless Steel Shell 6 of negative side, near connecting oxygen valve 8 on the Stainless Steel Shell 6 of side of the positive electrode.Give vent to anger valve and air intake valve communicates with Stainless Steel Shell 7 inside through gas piping 10; Stainless Steel Shell 7 internal-internals are provided with spring 11; Four angles of fluid sealant 9 sealing Stainless Steel Shell 7.
The operation principle of this battery: in the lithium-air battery discharge process, feed the nitrogen and the oxygen of same traffic, pressure respectively at negative pole and side of the positive electrode.The nitrogen of negative side can hinder side of the positive electrode oxygen and permeate to negative side, thereby effectively suppresses the oxidation of lithium metal, has improved the specific energy and the cycle performance of battery.
Claims (2)
1. a porous negative pole structure lithia pneumoelectric pond is characterized in that porous lithium negative pole (1) vertically places the middle part of insulation shell (5), places first barrier film (2), organic electrolyte (3), second barrier film (12), porous carbon anodal (4) then successively; Porous lithium negative pole (1) respectively leaves air chamber with a side of porous carbon anodal (4); Insulation shell (5) places the centre of two Stainless Steel Shell (6); Fix through screw; Near the last nitrogen valve (7) that connects of the Stainless Steel Shell (6) of negative side, near the last oxygen valve (8) that connects of the Stainless Steel Shell (6) of side of the positive electrode.
2. according to the said a kind of porous negative pole structure lithia pneumoelectric of claim 1 pond, it is characterized in that said nitrogen valve (7) feeds nitrogen or argon gas, the flow of nitrogen or argon gas is 5-5000mL/min, and pressure is 0.01-10MPa; Said oxygen valve (8) aerating oxygen, the flow of oxygen is 5-5000mL/min, pressure is 0.01-10MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110323910XA CN102376936B (en) | 2011-10-22 | 2011-10-22 | Lithium oxygen battery with porous cathode structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110323910XA CN102376936B (en) | 2011-10-22 | 2011-10-22 | Lithium oxygen battery with porous cathode structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102376936A true CN102376936A (en) | 2012-03-14 |
| CN102376936B CN102376936B (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110323910XA Active CN102376936B (en) | 2011-10-22 | 2011-10-22 | Lithium oxygen battery with porous cathode structure |
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| CN (1) | CN102376936B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852107A (en) * | 2015-05-25 | 2015-08-19 | 王建勋 | Metal air fuel cell |
| CN107482284A (en) * | 2017-06-20 | 2017-12-15 | 苏州迪思伏新能源科技有限公司 | A kind of lithium oxygen battery |
| JP2019040836A (en) * | 2017-08-29 | 2019-03-14 | スズキ株式会社 | Air battery and negative electrode composite used therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1728446A (en) * | 2004-02-20 | 2006-02-01 | 朗尼·G·约翰逊 | Lithium oxygen cell and its mfg. method |
| JP2010182606A (en) * | 2009-02-09 | 2010-08-19 | Nippon Telegr & Teleph Corp <Ntt> | Lithium air cell |
-
2011
- 2011-10-22 CN CN201110323910XA patent/CN102376936B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1728446A (en) * | 2004-02-20 | 2006-02-01 | 朗尼·G·约翰逊 | Lithium oxygen cell and its mfg. method |
| JP2010182606A (en) * | 2009-02-09 | 2010-08-19 | Nippon Telegr & Teleph Corp <Ntt> | Lithium air cell |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852107A (en) * | 2015-05-25 | 2015-08-19 | 王建勋 | Metal air fuel cell |
| CN104852107B (en) * | 2015-05-25 | 2017-03-08 | 王建勋 | Metal air fuel cell |
| CN107482284A (en) * | 2017-06-20 | 2017-12-15 | 苏州迪思伏新能源科技有限公司 | A kind of lithium oxygen battery |
| JP2019040836A (en) * | 2017-08-29 | 2019-03-14 | スズキ株式会社 | Air battery and negative electrode composite used therefor |
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| Publication number | Publication date |
|---|---|
| CN102376936B (en) | 2013-05-22 |
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