- 专利标题： POSITIVE ELECTRODE ADDITIVE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL COMPOSITION FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY CONTAINING SAID ADDITIVE, POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY PROVIDED WITH SAME
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申请号： EP22749719.5申请日： 2022-02-02
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公开(公告)号： EP4290601A1公开(公告)日： 2023-12-13
- 发明人: KOBAYASHI, Shohei , NISHIMURA, Shushi , IWASAKI, Hideharu
- 申请人： Kuraray Co., Ltd.
- 申请人地址： JP Kurashiki-shi, Okayama 710-0801 1621, Sakazu,
- 代理机构： Müller-Boré & Partner Patentanwälte PartG mbB
- 优先权： JP2021017338 20210205
- 国际公布： WO2022168847 20220811
- 主分类号： H01M4/13
- IPC分类号： H01M4/13 ; H01M4/139 ; H01M4/62 ; H01M10/052
摘要：
The present invention provides an additive for nonaqueous electrolyte secondary battery positive electrodes, which can improve the electrical conductivity of electrodes, decrease the resistance of electrodes, and increase the use efficiency of cation species such as lithium ions, sodium ions, various quaternary ammonium salts, and phosphonium salts.
An additive for nonaqueous electrolyte secondary battery positive electrodes, comprising a carbonaceous material having a specific surface area as determined by the BET method of from 1,000 m 2 /g to 2,000 m 2 /g, a micropore volume as determined by the DFT method of less than 0.60 cm 3 /g, and an oxygen content as measured by elemental analysis of 0.5% by mass or more and less than 1.3% by mass is disclosed.
An additive for nonaqueous electrolyte secondary battery positive electrodes, comprising a carbonaceous material having a specific surface area as determined by the BET method of from 1,000 m 2 /g to 2,000 m 2 /g, a micropore volume as determined by the DFT method of less than 0.60 cm 3 /g, and an oxygen content as measured by elemental analysis of 0.5% by mass or more and less than 1.3% by mass is disclosed.
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