发明申请
- 专利标题: NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
- 专利标题(中): 非水电解质二次电池
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申请号: US13125242申请日: 2010-08-03
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公开(公告)号: US20110200888A1公开(公告)日: 2011-08-18
- 发明人: Yoshiyuki Ozaki , Shinji Kasamatsu , Hideharu Sato , Shunsuke Yamada
- 申请人: Yoshiyuki Ozaki , Shinji Kasamatsu , Hideharu Sato , Shunsuke Yamada
- 优先权: JP2009-182284 20090805
- 国际申请: PCT/JP2010/004879 WO 20100803
- 主分类号: H01M10/056
- IPC分类号: H01M10/056 ; H01M4/133
摘要:
An object is to provide a high capacity non-aqueous electrolyte secondary battery in which decomposition of propylene carbonate is suppressed. The non-aqueous electrolyte secondary battery includes: a negative electrode including graphite particles as a negative electrode active material; a positive electrode; a separator; and a non-aqueous electrolyte including propylene carbonate as a non-aqueous solvent. Each of the graphite particles has a surface portion including an amorphous region and a crystal region which includes a plurality of carbon hexagonal net planes stacked along a surface of the graphite particle. Ends of the stacked carbon hexagonal net planes form loops exposed on the surface of the graphite particle. At least a part of the loops are stacked, and the average number of the loops stacked is more than 1 and not more than 2.
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