Invention Grant
- Patent Title: Negative electrode material for lithium battery, and lithium battery
- Patent Title (中): 锂电池负极材料和锂电池
-
Application No.: US13089588Application Date: 2011-04-19
-
Publication No.: US08388922B2Publication Date: 2013-03-05
- Inventor: Chiaki Sotowa , Masataka Takeuchi , Hidekazu Mori , Masahiro Yamakawa
- Applicant: Chiaki Sotowa , Masataka Takeuchi , Hidekazu Mori , Masahiro Yamakawa
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: Showa Denko K.K.,Zeon Corporation
- Current Assignee: Showa Denko K.K.,Zeon Corporation
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2004-000254 20040105
- Main IPC: H01M4/04
- IPC: H01M4/04 ; H01M4/583 ; H01M4/62

Abstract:
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 %.
Public/Granted literature
- US20110193014A1 NEGATIVE ELECTRODE MATERIAL FOR LITHIUM BATTERY, AND LITHIUM BATTERY Public/Granted day:2011-08-11
Information query