公开(公告)号：US20110193014A1

公开(公告)日：2011-08-11

申请号：US13089588

申请日：2011-04-19

申请人： Chiaki SOTOWA ,  Masataka Takeuchi ,  Hidekazu Mori ,  Masahiro Yamakawa

发明人： Chiaki SOTOWA ,  Masataka Takeuchi ,  Hidekazu Mori ,  Masahiro Yamakawa

IPC分类号： H01M4/38 ,  H01M4/62 ,  B82Y99/00

CPC分类号： H01M4/0433 ,  H01M4/133 ,  H01M4/587 ,  H01M4/621 ,  H01M4/622 ,  H01M4/661 ,  H01M2004/021 ,  Y10T29/49108 ,  Y10T29/49115

摘要： The present invention relates to a negative electrode material for a lithium battery comprising a carbonaceous negative electrode active substance having a specific surface area of 1 m2/g or more, a binder formed of styrene-butadiene rubber and a carbon fiber having a fiber diameter of 1 to 1,000 nm; and to a lithium battery using the negative electrode material, which has excellent characteristics, i.e., low electrode resistance, high electrode strength, excellent electrolytic solution permeability, high energy density, and good high-speed charging/discharging performance. The negative electrode material contains carbon fiber in the amount of 0.05 to 20 mass % and the binder formed of styrene-butadiene rubber in 0.1 to 6.0 mass %, and may further contain a thickener such as carboxymethyl cellulose in the amount of 0.3 to 3 mass %.

摘要翻译： 本发明涉及锂电池用负极材料，其包含比表面积为1m 2 / g以上的碳质负极活性物质，由苯乙烯 - 丁二烯橡胶和纤维直径为 1〜1000nm; 并且使用具有优异的特性，即低电极电阻，高电极强度，优异的电解液渗透性，高能量密度和良好的高速充电/放电性能的负极材料的锂电池。 负极材料含有0.05〜20质量％的碳纤维和0.1〜6.0质量％的苯乙烯 - 丁二烯橡胶形成的粘合剂，还可以含有0.3〜3质量％的羧甲基纤维素等增稠剂 ％。