- 专利标题： Negative electrode for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery
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申请号： US17123903申请日： 2020-12-16
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公开(公告)号： US11728471B2公开(公告)日： 2023-08-15
- 发明人: Yusuke Fukumoto , Masanori Sugimori , Yuji Yokoyama , Nobuhiro Hirano , Yo Kato
- 申请人： Panasonic Corporation , TOYOTA JIDOSHA KABUSHIKI KAISHA
- 申请人地址： JP Kadoma
- 专利权人： PANASONIC HOLDINGS CORPORATION,TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人： PANASONIC HOLDINGS CORPORATION,TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人地址： JP Osaka; JP Toyota
- 代理机构： WHDA, LLP
- 优先权： JP 19231717 2019.12.23
- 主分类号： H01M4/62
- IPC分类号： H01M4/62 ; H01M4/133 ; H01M4/583 ; H01M4/36 ; H01M4/38 ; H01M4/134 ; H01M4/02
摘要：
A negative electrode for a nonaqueous electrolyte secondary battery, which is an example of embodiments, comprises a negative electrode core body and a negative electrode mixture layer provided on the surface of the negative electrode core body. The negative electrode mixture layer includes graphite and fibrous carbon. The BET specific surface area of the graphite included in the first region is smaller than the BET specific surface area of the graphite included in the second region. In addition, the average length of the fibrous carbon included in the second region is longer than the average length of the fibrous carbon included in the first region.
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