CN101499526A - Lithium-thionyl chloride cell cathode with improved battery voltage hysteretic properties - Google Patents
Lithium-thionyl chloride cell cathode with improved battery voltage hysteretic properties Download PDFInfo
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- CN101499526A CN101499526A CNA2009100610232A CN200910061023A CN101499526A CN 101499526 A CN101499526 A CN 101499526A CN A2009100610232 A CNA2009100610232 A CN A2009100610232A CN 200910061023 A CN200910061023 A CN 200910061023A CN 101499526 A CN101499526 A CN 101499526A
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- alkaline earth
- earth metal
- thionyl chloride
- battery
- metal hydroxide
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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 discloses a lithium thionyl chloride battery cathode, which can improve the voltage lagging performance of the battery. The raw materials comprise acetylene black and polytetrafluoroethylene emulsion, and the battery cathode is characterized by also comprising alkaline earth metal oxide or alkaline earth metal hydroxide. The weight of the alkaline earth metal oxide or the alkaline earth metal hydroxide is 0.1 percent to 5 percent of the weight of the acetylene black and the polytetrafluoroethylene emulsion. The alkaline earth metal oxide or alkaline earth metal hydroxide added into the lithium thionyl chloride battery can be neutralized with the acidic substances in the battery, thereby improving the stability of the performances of the battery. In addition, the alkaline earth metal oxide or alkaline earth metal hydroxide can speed up the flocculation of the polytetrafluoroethylene emulsion, thereby improving the fibrosis of the anode, simultaneously reducing the corrosion to the tooling equipment, and preventing the metal impurities from the outside.
Description
Technical field
The invention belongs to lithium battery material, be specifically related to a kind of lithium thionyl chloride cell cathode material.
Background technology
Lithium thionyl chloride cell negative electrode main material is acetylene black and polytetrafluoroethylene liquid etc., and there is oxy radical on the surface of acetylene black particulate, and as quinone, Ester, these materials easily are reduced or decompose, thereby shows acid.The electrolyte that lithium thionyl chloride cell uses is LiAlCl
4-SOCL
2Solution is in any case careful control in its preparation process all can contain lewis acid (AlCl
3).If hydrolysis takes place in electrolyte in operating process, then can produce HCL, these acidic materials are very harmful composition in lithium thionyl chloride cell, although only contain some thousandths of, but all can produce significantly influence to the stability and the fail safe of battery, it also causes the hysteresis quality of voltage simultaneously, influences the startability of battery output.
Summary of the invention
The object of the present invention is to provide a kind of lithium thionyl chloride cell negative electrode,, improve the battery performance stability and security simultaneously, thereby address the above problem to improve the cell voltage hysteretic properties.
Technical scheme of the present invention is: the lithium thionyl chloride cell negative electrode that improves the cell voltage hysteretic properties, it comprises raw material acetylene black and ptfe emulsion, it is characterized in that it also comprises raw material alkaline earth oxide or alkaline earth metal hydroxide, the weight of described alkaline earth oxide or alkaline earth metal hydroxide be acetylene black and ptfe emulsion weight and 0.1%-5%.
Here the weight ratio of raw material acetylene black and ptfe emulsion is according to the ratio of material in the existing lithium thionyl chloride cell, and general weight ratio is: acetylene black: ptfe emulsion=85～95:5～15.
And alkaline earth oxide or alkaline earth metal hydroxide add in acetylene black and the ptfe emulsion as additive, add weight and be acetylene black and ptfe emulsion weight and 0.1%-5%.
Described alkaline earth oxide is a kind of in calcium oxide, magnesium oxide and the barium monoxide.
Described alkaline earth metal hydroxide is a kind of in calcium hydroxide, magnesium hydroxide and the barium hydroxide.
It is existing goods for a ptfe emulsion, and the general polytetrafluoroethylene weight ratio that adopts is 60% ptfe emulsion when being used for the bonding agent of cell cathode.
In lithium thionyl chloride cell, add alkaline earth oxide or alkaline earth metal hydroxide, can neutralize, thereby improve the stable of battery performance with these acidic materials in the battery.The interpolation of alkaline earth oxide or alkaline earth metal hydroxide also can be accelerated the flocculation of ptfe emulsion in addition, has improved anodal fibrosis, has alleviated the corrosion to tooling device simultaneously, has avoided sneaking into of introduced contaminants metal.
Description of drawings
The cell voltage hysteresis comparison diagram that Fig. 1 battery and original technology are produced.
Embodiment
Embodiment 1
With acetylene black: the ratio batching of ptfe emulsion (solid content is 60%): calcium oxide=100:10:1.5, mix the back and add an amount of absolute ethyl alcohol (or isopropyl alcohol), be modulated into paste,, make lithium thionyl chloride cell with it after the intensive drying through being extruded into the carbon bag.Ptfe emulsion can adopt the D-210C type.
Embodiment 2
With acetylene black: the ratio batching of ptfe emulsion (solid content is 60%): calcium hydroxide=100:10:2.5, mix the back and add an amount of absolute ethyl alcohol (or isopropyl alcohol), be modulated into paste,, make lithium thionyl chloride cell with it after the intensive drying through being extruded into the carbon bag.
Embodiment 3
With acetylene black: the ratio batching of ptfe emulsion (solid content is 60%): magnesium oxide=100:10:1, mix the back and add an amount of absolute ethyl alcohol (or isopropyl alcohol), be modulated into paste,, make lithium thionyl chloride cell with it after the intensive drying through being extruded into the carbon bag.
Embodiment 4
With acetylene black: the ratio batching of ptfe emulsion (solid content is 60%): calcium oxide=100:10:5.5, mix the back and add an amount of absolute ethyl alcohol (or isopropyl alcohol), be modulated into paste,, make lithium thionyl chloride cell with it after the intensive drying through being extruded into the carbon bag.
Figure one is that the cell voltage that the battery made of example of the present invention and original technology are produced lags behind relatively: be after two kinds of batteries are stored one month through 60 ℃, to use 5mA/cm shown in the figure
2The load voltage at current discharge initial stage (0 to 60 second), 10 is initial stage load voltages of the battery made with cathode technique example of the present invention among the figure, 20 is initial stage load voltages that original technology is produced battery among the figure, as can be seen from the figure there is difference in essence in two kinds of batteries, and the battery that the technology of the present invention is produced has significant advantage.
Claims (3)
1, a kind of lithium thionyl chloride cell negative electrode that improves the cell voltage hysteretic properties, it comprises raw material acetylene black and ptfe emulsion, it is characterized in that it also comprises raw material alkaline earth oxide or alkaline earth metal hydroxide, the weight of described alkaline earth oxide or alkaline earth metal hydroxide be acetylene black and ptfe emulsion weight and 0.1%-5%.
2, improve the lithium thionyl chloride cell negative electrode of cell voltage hysteretic properties according to claim 1, it is characterized in that described alkaline earth oxide is a kind of in calcium oxide, magnesium oxide and the barium monoxide.
3, improve the lithium thionyl chloride cell negative electrode of cell voltage hysteretic properties according to claim 1, it is characterized in that described alkaline earth metal hydroxide is a kind of in calcium hydroxide, magnesium hydroxide and the barium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100610232A CN101499526A (en) | 2009-03-06 | 2009-03-06 | Lithium-thionyl chloride cell cathode with improved battery voltage hysteretic properties |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100610232A CN101499526A (en) | 2009-03-06 | 2009-03-06 | Lithium-thionyl chloride cell cathode with improved battery voltage hysteretic properties |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101499526A true CN101499526A (en) | 2009-08-05 |
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ID=40946483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100610232A Pending CN101499526A (en) | 2009-03-06 | 2009-03-06 | Lithium-thionyl chloride cell cathode with improved battery voltage hysteretic properties |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208623A (en) * | 2011-04-29 | 2011-10-05 | 苏州金科发锂电池有限公司 | Method for preparing lithium/thionyl dichloride battery cathode material |
| CN102208675A (en) * | 2011-04-29 | 2011-10-05 | 苏州金科发锂电池有限公司 | Lithium/thionyl dichloride battery |
| CN106169608A (en) * | 2016-08-31 | 2016-11-30 | 襄阳艾克特电池科技股份有限公司 | A kind of lithium thionyl chloride battery electrolyte manufacture method |
-
2009
- 2009-03-06 CN CNA2009100610232A patent/CN101499526A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208623A (en) * | 2011-04-29 | 2011-10-05 | 苏州金科发锂电池有限公司 | Method for preparing lithium/thionyl dichloride battery cathode material |
| CN102208675A (en) * | 2011-04-29 | 2011-10-05 | 苏州金科发锂电池有限公司 | Lithium/thionyl dichloride battery |
| CN102208623B (en) * | 2011-04-29 | 2012-12-19 | 苏州金科发锂电池有限公司 | Method for preparing lithium/thionyl dichloride battery cathode material |
| CN106169608A (en) * | 2016-08-31 | 2016-11-30 | 襄阳艾克特电池科技股份有限公司 | A kind of lithium thionyl chloride battery electrolyte manufacture method |
| CN106169608B (en) * | 2016-08-31 | 2019-08-20 | 襄阳艾克特电池科技股份有限公司 | A kind of lithium thionyl chloride battery electrolyte production method |
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Open date: 20090805 |