CN101414677A - Method for preparing lithium/thionyl chloride battery carbon cathode - Google Patents
Method for preparing lithium/thionyl chloride battery carbon cathode Download PDFInfo
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- CN101414677A CN101414677A CNA2008100420801A CN200810042080A CN101414677A CN 101414677 A CN101414677 A CN 101414677A CN A2008100420801 A CNA2008100420801 A CN A2008100420801A CN 200810042080 A CN200810042080 A CN 200810042080A CN 101414677 A CN101414677 A CN 101414677A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a carbon cathode of a lithium/thionyl chloride cell and a preparation method thereof. The preparation method comprises the following steps: a. mixing acetylene black, polytetrafluoroethylene aqueous solution with 60% weight concentration and isopropyl alcohol according to a weight ratio of 22:5:200, adding cobalt phthalocyanine complex which accounts for 2-10% of the total weight of the solid mixture, and evenly mixing various components to obtain cathode paste and powder; b. rolling the cathode paste and powder for molding; and c. drying in vacuum. In the preparation method, the cobalt phthalocyanine complex is doped into the carbon cathode of the lithium/thionyl chloride cell to act as an electrocatalyst and a pore forming agent, thus improving the porosity of the carbon cathode, increasing the surface area of the carbon cathode, effectively reducing the transmission resistance of reactive ions and electric charge in the multi-porous carbon electrode, being capable of improving the discharge capacity and the operating voltage of the lithium/thionyl chloride cell, and improving the high-current discharge capacity of the cell.
Description
Technical field
The present invention relates to a kind of method for preparing battery electrode, relate to a kind of method for preparing the lithium/thinly chloride battery carbon cathode in particular.
Background technology
Lithium/thinly chloride (Li/SOCl
2) battery is the highest battery of specific energy in the present chemical power source, its operating voltage height, discharging voltage balance may be compared with zinc-silver oxide cell, specific energy is about same zinc-silver oxide cell twice, serviceability temperature can reach-40 ℃～+ 55 ℃, storage life and reach 5～10 years.To spacecrafts such as satellites, primary power source is too heavy to be the restraining factors that improve the satellite payload always.Short period spacecrafts such as China's retrievable satellite always with zinc-silver oxide cell as main power source, but the big capacity Li/SOCl of Meiling Chemical Plant of China Aerospace Science and Industry Corporation development recently
2Battery has begun on certain serial retrievable satellite as accessory power supplys such as temperature control, wet controls.With Li/SOCl
2Battery replaces the main power source of zinc-silver oxide cell as spacecraft, and the quality of spacecraft power supply system and volume are all reduced more than 1/3rd.In addition, Li/SOCl
2The hygrometric state resting period of battery reaches 5-10, and zinc-silver oxide cell hygrometric state resting period some months only, and zinc-silver oxide cell need carry out long technology in the target range before using and prepares obvious Li/SOCl
2Battery more meets the service requirement of modern weapons system.The primary power source that aircraft such as guided missile, satellite uses not only requires the specific energy height, also need possess bigger power output, and promptly battery will have certain pulsed discharge ability and high rate discharge performance, but conventional Li/SOCl
2Battery is in discharge process, and the carbon cathode surface loses activity gradually because of the deposition of LiCl, and the cathode reaction resistance increases, and causes the electric current fan-out capability of battery to descend, and exists safety issue, voltage delay and electric current fan-out capability problem, wants to use Li/SOCl
2Battery replaces present main power source zinc-silver oxide cell, also needs further to improve or address the above problem, and discovers Li/SOCl
2Battery can effectively improve Li/SOCl by the quality of improving carbon cathode
2The performance of battery.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of lithium/thinly chloride battery carbon cathode, and it has significantly improved the chemical property of lithium/thinly chloride battery.
Technical scheme of the present invention, a. and powder
Acetylene carbon black, weight concentration are that 60% the polytetrafluoroethyl-ne aqueous solution and the weight ratio of isopropyl alcohol are respectively 22:5:200, and the addition of phthalocyanine cobalt complex is 2～10% (weight) of solid mixture total amount, each component is mixed obtain the negative electrode paste;
B. roller-compaction
The above-mentioned negative electrode paste that mixes is put into twin rollers repeatedly roll, make the film of 1～2mm thickness, be cut into positive plate;
C. vacuum drying
The carbon cathode that above-mentioned cutting is in blocks is put into vacuum drying oven oven dry under 150～300 ℃ and was obtained described lithium/thinly chloride battery carbon cathode in 12 hours.
Beneficial effect of the present invention: by the phthalocyanine cobalt complex is incorporated in the lithium/thinly chloride battery carbon cathode, the phthalocyanine cobalt complex is both as eelctro-catalyst, again as pore creating material, thereby improve the gas porosity of carbon cathode, increase the surface area of carbon cathode, effectively reduce reactive ion and electric charge transport resistance problem, and can improve the discharge capacity and the operating voltage of lithium/thinly chloride battery, improve the large current discharging capability of battery at porous carbon electrodes.
Description of drawings
Fig. 1 is the molecular structure of phthalocyanine cobalt complex;
Fig. 2 is the Li/SOCl of two kinds of different carbon film assemblings
2Battery constant-current discharge curve chart.
Embodiment
The present invention is described in further detail a. and powder below by embodiment
Acetylene carbon black, weight concentration are that 60% the polytetrafluoroethyl-ne aqueous solution and the weight ratio of isopropyl alcohol are respectively 22:5:200, and the addition of phthalocyanine cobalt complex is 2～10% (weight) of solid mixture total amount, each component is mixed obtain the negative electrode paste;
B. roller-compaction
The above-mentioned negative electrode paste that mixes is put into twin rollers repeatedly roll, make the film of 1～2mm thickness, be cut into positive plate;
C. vacuum drying
The carbon cathode that above-mentioned cutting is in blocks is put into vacuum drying oven oven dry under 150～300 ℃ and was obtained described lithium/thinly chloride battery carbon cathode in 12 hours.
[embodiment 1]
(1) and powder
Acetylene carbon black (LITHIUM BATTERY): 0.88g
Ptfe emulsion (60% aqueous solution): 0.2ml
Isopropyl alcohol (analyzing pure): 8ml
Phthalocyanine cobalt complex: 0.042g (mass ratio 4%)
Proportionally take by weighing ptfe emulsion and put into the agate crucible, take by weighing acetylene carbon black again and the phthalocyanine cobalt is put into wherein, add the 8ml isopropyl alcohol, mix and form the carbon cathode paste as solvent.
(2) roller-compaction
The negative electrode paste that mixes is put into the film that twin rollers repeatedly is rolled into 1-2mm thickness, be cut into positive plate by battery size.
(3) vacuum drying
The positive plate that rolls is put into vacuum drying oven dried 12 hours down at 200 ℃, it is standby to obtain the lithium/thinly chloride battery carbon cathode.
Fig. 1 is the molecular structure of phthalocyanine cobalt complex, and Fig. 2 is the Li/SOCl of two kinds of different carbon film assemblings
2Battery constant-current discharge curve chart, A is the carbon film that mixes the phthalocyanine cobalt, B is common carbon film, as seen by the transition metal phthalocyanine complex is incorporated in the lithium/thinly chloride battery carbon cathode, the transition metal phthalocyanine complex is both as eelctro-catalyst, again as pore creating material, thereby improve the gas porosity of carbon cathode, increase carbon cathode surface area, effectively reduce reactive ion and electric charge transport resistance problem at porous carbon electrodes, and can improve the discharge capacity and the operating voltage of lithium/thinly chloride battery, improve the large current discharging capability of battery.
[embodiment 2]
(1) and powder
Acetylene carbon black (LITHIUM BATTERY): 2.64g
Ptfe emulsion (60% aqueous solution): 0.6ml
Isopropyl alcohol (analyzing pure): 24ml
Phthalocyanine cobalt complex: 0.061g (mass ratio 2%)
Proportionally take by weighing ptfe emulsion and put into the agate crucible, take by weighing acetylene carbon black again and the phthalocyanine cobalt is put into wherein, add the 8ml isopropyl alcohol, mix and form the carbon cathode paste as solvent.
(2) roller-compaction
The negative electrode paste that mixes is put into the film that twin rollers repeatedly is rolled into 1-2mm thickness, be cut into positive plate by battery size.
(3) vacuum drying
The positive plate that rolls is put into vacuum drying oven dried 12 hours down at 250 ℃, it is standby to obtain the lithium/thinly chloride battery carbon cathode.
[embodiment 3]
(1) and powder
Acetylene carbon black (LITHIUM BATTERY): 2.64g
Ptfe emulsion (60% aqueous solution): 0.6ml
Isopropyl alcohol (analyzing pure): 24ml
Phthalocyanine cobalt complex: 0.333g (mass ratio 10%)
Proportionally take by weighing ptfe emulsion and put into the agate crucible, take by weighing acetylene carbon black again and the phthalocyanine cobalt is put into wherein, add the 8ml isopropyl alcohol, mix and form the carbon cathode paste as solvent.
(2) roller-compaction
The negative electrode paste that mixes is put into the film that twin rollers repeatedly is rolled into 1-2mm thickness, be cut into positive plate by battery size.
(3) vacuum drying
The positive plate that rolls is put into vacuum drying oven dried 12 hours down at 250 ℃, it is standby to obtain the lithium/thinly chloride battery carbon cathode.
Foregoing only is the basic explanation of the present invention under conceiving, and according to any equivalent transformation that technical scheme of the present invention is done, all should belong to protection scope of the present invention.
Claims (1)
1. the preparation method of a lithium/thinly chloride battery carbon cathode comprises the following steps:
A. and powder
Acetylene carbon black, weight concentration are that 60% the polytetrafluoroethyl-ne aqueous solution and the weight ratio of isopropyl alcohol are respectively 22:5:200, and the addition of phthalocyanine cobalt complex is 2～10% (weight) of solid mixture total amount, each component is mixed obtain the negative electrode paste;
B. roller-compaction
The above-mentioned negative electrode paste that mixes is put into twin rollers repeatedly roll, make the film of 1～2mm thickness, be cut into positive plate;
C. vacuum drying
The carbon cathode that above-mentioned cutting is in blocks is put into vacuum drying oven oven dry under 150～300 ℃ and was obtained described lithium/thinly chloride battery carbon cathode in 12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100420801A CN101414677B (en) | 2008-08-26 | 2008-08-26 | Method for preparing lithium/thionyl chloride battery carbon cathode |
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| CN2008100420801A CN101414677B (en) | 2008-08-26 | 2008-08-26 | Method for preparing lithium/thionyl chloride battery carbon cathode |
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| CN101414677A true CN101414677A (en) | 2009-04-22 |
| CN101414677B CN101414677B (en) | 2011-11-09 |
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Cited By (6)
| 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 |
| CN103618062A (en) * | 2013-10-07 | 2014-03-05 | 天津德克尼斯电子科技有限公司 | Special lithium thionyl chloride battery positive electrode sheet production method, special lithium thionyl chloride battery positive electrode sheet and special lithium thionyl chloride battery |
| CN109378473A (en) * | 2018-08-20 | 2019-02-22 | 中国科学院兰州化学物理研究所 | The modified carbon-supported copper catalyst of nitrogen and its application in terms of cell positive material |
| CN109701656A (en) * | 2018-12-27 | 2019-05-03 | 陕西科技大学 | A kind of fluorine substituted phthalocyanine cobalt/active carbon Li/SOCl2Cell catalyst material and preparation method thereof |
| CN110010857A (en) * | 2018-01-04 | 2019-07-12 | 天津大学 | Application based on metal phthalocyanine compound-carbon composite material and its in lithium-sulfur cell |
| CN110237863A (en) * | 2019-06-20 | 2019-09-17 | 陕西科技大学 | A kind of preparation method and applications of three-dimensional porous pomace carbon support Cobalt Phthalocyanine lithium thionyl chloride cell catalysis material |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1166685A (en) * | 1981-01-26 | 1984-05-01 | Narayan Doddapaneni | Electrochemical cell with improved cathode and method of making |
| CN1649194A (en) * | 2004-12-13 | 2005-08-03 | 武汉孚特电子科技有限公司 | Cathode carrier of lithium thionyl chlorine cell |
| CN100487956C (en) * | 2007-07-17 | 2009-05-13 | 中国地质大学（武汉） | Anode of high-temperature lithium thionyl chloride battery and its making method |
-
2008
- 2008-08-26 CN CN2008100420801A patent/CN101414677B/en active Active
Cited By (8)
| 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 |
| 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 |
| CN103618062A (en) * | 2013-10-07 | 2014-03-05 | 天津德克尼斯电子科技有限公司 | Special lithium thionyl chloride battery positive electrode sheet production method, special lithium thionyl chloride battery positive electrode sheet and special lithium thionyl chloride battery |
| CN103618062B (en) * | 2013-10-07 | 2016-04-20 | 天津德克尼斯电子科技有限公司 | The positive plate manufacture method of extraordinary lithium thionyl chloride cell and positive plate thereof and battery |
| CN110010857A (en) * | 2018-01-04 | 2019-07-12 | 天津大学 | Application based on metal phthalocyanine compound-carbon composite material and its in lithium-sulfur cell |
| CN109378473A (en) * | 2018-08-20 | 2019-02-22 | 中国科学院兰州化学物理研究所 | The modified carbon-supported copper catalyst of nitrogen and its application in terms of cell positive material |
| CN109701656A (en) * | 2018-12-27 | 2019-05-03 | 陕西科技大学 | A kind of fluorine substituted phthalocyanine cobalt/active carbon Li/SOCl2Cell catalyst material and preparation method thereof |
| CN110237863A (en) * | 2019-06-20 | 2019-09-17 | 陕西科技大学 | A kind of preparation method and applications of three-dimensional porous pomace carbon support Cobalt Phthalocyanine lithium thionyl chloride cell catalysis material |
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| CN101414677B (en) | 2011-11-09 |
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Owner name: STATE GRID SHANGHAI ELECTRIC POWER COMPANY Effective date: 20141216 |
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Effective date of registration: 20141216 Address after: 200090 Pingliang Road, Shanghai, No. 2103, No. Patentee after: Shanghai University of Electric Power Patentee after: State Grid Shanghai Municipal Electric Power Company Address before: 200090 Pingliang Road, Shanghai, No. 2103, No. Patentee before: Shanghai University of Electric Power |