CN102227033B - Lithium air battery of micro-nano spherical structure - Google Patents
Lithium air battery of micro-nano spherical structure Download PDFInfo
- Publication number
- CN102227033B CN102227033B CN201110126268.6A CN201110126268A CN102227033B CN 102227033 B CN102227033 B CN 102227033B CN 201110126268 A CN201110126268 A CN 201110126268A CN 102227033 B CN102227033 B CN 102227033B
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- China
- Prior art keywords
- lithium
- air battery
- catalyst
- carbon cloth
- lithium air
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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
Abstract
The invention discloses a lithium air battery of a micro-nano spherical structure in the technical field of lithium air batteries. The lithium air battery comprises a lithium metallic sphere, a hydrophobic colloidal electrolyte, a carbon cloth with a catalyst and guide lines, wherein the hydrophobic colloidal electrolyte is coated on a surface of the lithium metallic sphere; the carbon cloth with the catalyst is coated on a surface of the hydrophobic colloidal electrolyte; and the guide lines are led out at the lithium metallic sphere and the carbon cloth with the catalyst. The surface area of an anode of the lithium air battery is dozens of times that of a cathode of the lithium air battery; and the lithium air battery solves the problem that the discharge is ended because apertures on the carbon cloth are blocked by discharging products in the long-term discharge process, thus prolonging the continuous discharge time of the lithium air battery.
Description
Technical field
The invention belongs to lithium-air battery technical field, be specifically related to a kind of lithium air battery of micro-nano spherical structure.
Background technology
Lithium-air battery is with its high theoretical specific capacity and specific energy and the characteristic such as environmentally friendly and become the power conversion system receiving much concern at present.Lithium-air battery is to make negative pole, the battery using airborne oxygen as anode reactant with one lithium metal.Discharge process: the lithium of anode becomes lithium cation after discharging electronics, lithium ion is through electrolyte, and the electronics flowing through with oxygen and from external circuit at negative electrode is combined and is generated lithia or lithium peroxide, and stays negative electrode.Lithium-air battery has higher energy density than lithium ion battery, because its negative electrode (taking porous carbon as main) is very light, and oxygen obtains and need not be kept in battery from environment.In theory, because oxygen is not limited as cathode reactant, the capacity of this battery only depends on lithium electrode, and its specific energy is 5,210Wh/kg (comprising oxygen quality), or 11,140Wh/kg (not comprising oxygen).Height has a battery system 1-2 order of magnitude, in dual-use high-energy-density field, has important application prospect.
Lithium-air battery is in long-time discharge process, and oxygen is reduced into O at porous air electrode surface
2-or O
2 2-, then with electrolyte in Li
+in conjunction with producing product Li
2o
2or Li
2o.Because lithium peroxide and lithia are all not dissolved in organic electrolyte, therefore discharging product can only deposit on the air electrode that has negative oxygen ion or mistake negative oxygen ion, in the situation that anode is excessive, the termination of electric discharge is because discharging product is stopped up due to air electrode duct.
Summary of the invention
The object of this invention is to provide a kind of lithium air battery of micro-nano spherical structure, overcome lithium-air battery in continuous operation process, because discharging product lithia or lithium peroxide are deposited on air electrode, stop up the problem that the guiding discharge of air electrode duct stops.
A kind of lithium air battery of micro-nano spherical structure, this battery is made up of lithium Metal Ball 1, hydrophobic type colloidal electrolyte 2, the carbon cloth 3 that is loaded with catalyst and wire 4; The surperficial coated by hydrophobic colloidal electrolyte 2 of lithium Metal Ball 1, the coated carbon cloth 3 that is loaded with catalyst in surface of hydrophobic colloidal electrolyte 2, has respectively wire 4 to draw in lithium Metal Ball 1 with carbon cloth 3 places that are loaded with catalyst.
Described lithium Metal Ball 1 is lithium or lithium alloy spheroid, and radius is less than 100um.
Described hydrophobic type colloidal electrolyte 2 is not volatile hydrophobic type ionic liquid colloidal electrolyte, and thickness is between 300-900um.
Catalyst in the described carbon cloth 3 that is loaded with catalyst is Pt, Au, Pd, PtAu, PtPd, AuPd, PtAuPd MnO
2, Fe
2o
3or Co
3o
4.
Beneficial effect of the present invention: lithium air battery of micro-nano spherical structure lithium Metal Ball radius of the present invention is relatively little, the radius of colloidal electrolyte is relatively large, the anodal surface area of lithium-air battery is tens times that negative terminal surface is amassed, lithium-air battery is in long-time discharge process, can overcome that discharging product is stopped up the aperture of carbon cloth and problem that guiding discharge stops, lithium-air battery continuous discharge time lengthening.
Brief description of the drawings
Fig. 1 is lithium air battery of micro-nano spherical structure semiglobe schematic diagram;
In figure, 1-lithium Metal Ball, 2-hydrophobic type colloidal electrolyte, 3-are loaded with carbon cloth, the 4-wire of catalyst.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
As shown in Figure 1, the lithium air battery of micro-nano spherical structure of the present embodiment is made up of lithium Metal Ball 1, hydrophobic type colloidal electrolyte 2, the carbon cloth 3 that is loaded with catalyst and wire 4; The surperficial coated by hydrophobic colloidal electrolyte 2 of lithium Metal Ball 1, the coated carbon cloth 3 that is loaded with catalyst in surface of hydrophobic colloidal electrolyte 2, has respectively wire 4 to draw collected current in lithium Metal Ball 1 with carbon cloth 3 places that are loaded with catalyst.Lithium Metal Ball 1 is lithium or lithium alloy spheroid, and radius is less than 100um.Hydrophobic type colloidal electrolyte 2 is not volatile hydrophobic type ionic liquid colloidal electrolyte, and thickness is between 300-900um.The catalyst being loaded with in the carbon cloth 3 of catalyst is Pt, Au, Pd, PtAu, PtPd, AuPd, PtAuPd MnO
2, Fe
2o
3or Co
3o
4.
In the battery structure of the present embodiment, lithium Metal Ball radius is relatively little, and the radius of colloidal electrolyte is relatively large, by spherical surface area formula S=4 π R
2, square being directly proportional of known spherical surface area and radius, therefore, the anodal surface area of the lithium-air battery of this structure is long-pending tens times of negative terminal surface., can solve in lithium-air battery discharge process much larger than negative pole just because of the area of anode, discharging product is stopped up the aperture of carbon cloth, makes gas and electrolyte not to form three phase boundary and the problem of guiding discharge termination at catalyst surface.Under equal conditions, the lithium-air battery continuous discharge time of this structure can extend tens hundreds of times even.
Claims (2)
1. a lithium air battery of micro-nano spherical structure, is characterized in that, this battery is made up of lithium Metal Ball (1), hydrophobic type colloidal electrolyte (2), the carbon cloth (3) that is loaded with catalyst and wire (4); The surperficial coated by hydrophobic colloidal electrolyte of lithium Metal Ball (1) (2), the coated carbon cloth (3) that is loaded with catalyst in the surface of hydrophobic colloidal electrolyte (2), locates to have respectively wire (4) to draw in lithium Metal Ball (1) and the carbon cloth (3) that is loaded with catalyst;
Described lithium Metal Ball (1) is lithium or lithium alloy spheroid, and radius is less than 100um;
Described hydrophobic type colloidal electrolyte (2) is not volatile hydrophobic type ionic liquid colloidal electrolyte, and thickness is between 300-900um.
2. a kind of lithium air battery of micro-nano spherical structure according to claim 1, is characterized in that, described in the catalyst that is loaded with in the carbon cloth (3) of catalyst be Pt, Au, Pd, PtAu, PtPd, AuPd, PtAuPdMnO
2, Fe
2o
3or Co
3o
4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110126268.6A CN102227033B (en) | 2011-05-16 | 2011-05-16 | Lithium air battery of micro-nano spherical structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110126268.6A CN102227033B (en) | 2011-05-16 | 2011-05-16 | Lithium air battery of micro-nano spherical structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102227033A CN102227033A (en) | 2011-10-26 |
| CN102227033B true CN102227033B (en) | 2014-08-06 |
Family
ID=44807992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110126268.6A Active CN102227033B (en) | 2011-05-16 | 2011-05-16 | Lithium air battery of micro-nano spherical structure |
Country Status (1)
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856611B (en) * | 2012-04-09 | 2015-02-04 | 中南大学 | Micro/nano structured cathode material for lithium air batteries |
| CN107146926A (en) * | 2017-05-22 | 2017-09-08 | 深圳市航盛新材料技术有限公司 | The quick-replaceable negative pole end of air cell and air cell |
| CN107611478B (en) * | 2017-08-20 | 2019-10-11 | 桂林理工大学 | A kind of assemble method of conductive rubber electrolyte lithium air cell |
| CN108183242B (en) * | 2017-11-20 | 2021-01-08 | 南京航空航天大学 | Lithium-air battery and preparation method of positive electrode thereof |
| CN110988687A (en) * | 2019-12-24 | 2020-04-10 | 华侨大学 | Lithium air battery testing mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438174A (en) * | 2003-03-27 | 2003-08-27 | 上海交通大学 | Carbon nano hollow-ball and its making method |
| CN1688046A (en) * | 2005-04-06 | 2005-10-26 | 清华大学 | Method for increasing electrochemical lithium storage content of nano-carbon tube |
| CN101971411A (en) * | 2009-05-19 | 2011-02-09 | 丰田自动车株式会社 | Air cell |
-
2011
- 2011-05-16 CN CN201110126268.6A patent/CN102227033B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438174A (en) * | 2003-03-27 | 2003-08-27 | 上海交通大学 | Carbon nano hollow-ball and its making method |
| CN1688046A (en) * | 2005-04-06 | 2005-10-26 | 清华大学 | Method for increasing electrochemical lithium storage content of nano-carbon tube |
| CN101971411A (en) * | 2009-05-19 | 2011-02-09 | 丰田自动车株式会社 | Air cell |
Non-Patent Citations (4)
| Title |
|---|
| 《A Li-air fuel cell with recycle aqueous electrolyte for improved stability》;Ping He et al.;《Electrochemistry Communications》;第12卷;20101001;1686-1689 * |
| 《Lithium-air batteries using hydrophobic room temperature ionic liquid electrolyte》;Takashi Kuboki et al.;《Journal of Power Sources》;20050531;第146卷;766-769 * |
| Ping He et al..《A Li-air fuel cell with recycle aqueous electrolyte for improved stability》.《Electrochemistry Communications》.第12卷,2010,1686-1689. |
| Takashi Kuboki et al..《Lithium-air batteries using hydrophobic room temperature ionic liquid electrolyte》.《Journal of Power Sources》.2005,第146卷766-769. |
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| Publication number | Publication date |
|---|---|
| CN102227033A (en) | 2011-10-26 |
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