Method for synthesizing lithiumion cell negative electrode material
Title：
Method for synthesizing lithiumion cell negative electrode material
Application Number：
 200310100462
Application Date：
 2003/10/17
Announcement Date：
 2004/09/15
Pub. Date：
 2006/07/12
Publication Number：
 1529368
Announcement Number：
 1264234
Grant Date：
 2006-7-12
Granted Pub. Date：
 2006-7-12
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H01M 4/38H01M 10/40
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Lin Kezhi, Wang Xiaolin
Key Words：
 synthesizing method, lithiumion cell, negative electrode material
Abstract：
 Chemical oxidation-reduction method is adopted in the invention. The preparing steps are as following: carrying out sensitizing treatment and activating treatment for carbon material; then, preparing A solution composed of complexing agent, hydration ferrous sulfate, hydration stannous chloride, boracic acid, cane sugar, composite complexing agent and stabilizer; preparing B solution composed of sodium hypophosphite and potassium borohydride; adding B drop to A, mixing round, filtering, washing by using 0.5MHCl and deionized water respectively, vacuum drying so as to obtain product wanted. Capacity of negative electrode material prepared by using the invented method is larger than theoretical capacity of general carbon material. The invention possesses features of simple implementation, lower cost, intermediate temperature (55-95deg.C) aqueous solution reaction. The method is applicable to treat any carbon material.
Claim：
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PCT：
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