发明申请
US20120328954A1 NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY USING THE NEGATIVE ELECTRODE MATERIAL, AND LITHIUM ION SECONDARY BATTERY
审中-公开
用于锂离子二次电池的负极电极材料，使用负极电极材料的锂离子二次电池负极电极和锂离子二次电池
- 专利标题： NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY USING THE NEGATIVE ELECTRODE MATERIAL, AND LITHIUM ION SECONDARY BATTERY
- 专利标题（中）： 用于锂离子二次电池的负极电极材料，使用负极电极材料的锂离子二次电池负极电极和锂离子二次电池
-
申请号： US13580675申请日： 2011-02-23
-
公开(公告)号： US20120328954A1公开(公告)日： 2012-12-27
- 发明人: Keiji Okabe , Yoshito Ishii , Yuriko Ida
- 申请人： Keiji Okabe , Yoshito Ishii , Yuriko Ida
- 优先权： JP2010-040228 20100225; JP2010-044622 20100301
- 国际申请： PCT/JP2011/054020 WO 20110223
- 主分类号： H01M4/583
- IPC分类号： H01M4/583
摘要：
Disclosed are: a negative electrode material for a lithium ion secondary battery, which enables the production of one having a smaller irreversible capacity. That is a negative electrode material for a lithium ion secondary battery having a carbon layer formed on a surface of a carbon material as a core, wherein (A) a carbon (002) plane has a plane distance of 3.40 to 3.70 Å (by an XRD measurement), (B) a content ratio of the carbon layer to the carbon material is 0.005 to 0.1, (C) a specific surface area is 0.5 to 10.0 m2/g (by a nitrogen adsorption measurement at 77 K), and (D) a specific surface area Y (by carbon dioxide adsorption at 273 K) and a content ratio X of the carbon layer to the carbon material meet the requirement represented by a formula (I): 0