- 专利标题： Lithium-ion secondary battery
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申请号： US14349437申请日： 2011-10-07
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公开(公告)号： US09972844B2公开(公告)日： 2018-05-15
- 发明人: Koji Takahata , Akihiro Ochiai
- 申请人： Koji Takahata , Akihiro Ochiai
- 申请人地址： JP Toyota-shi, Aichi
- 专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址： JP Toyota-shi, Aichi
- 代理机构： Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
- 国际申请： PCT/JP2011/073249 WO 20111007
- 国际公布： WO2013/051155 WO 20130411
- 主分类号： H01M4/133
- IPC分类号： H01M4/133 ; H01M4/587 ; H01M4/1393 ; H01M10/058 ; H01M4/36 ; H01M10/052 ; H01M4/02
摘要：
A negative electrode active material layer (243A) of a lithium-ion secondary battery (100A) contains natural graphite and artificial graphite as negative electrode active material particles. The negative electrode active material layer (243A) has a region (A1) facing the positive electrode active material layer (223) and regions (A2, A3) not facing the positive electrode active material layer (223). The region (A1) facing the positive electrode active material layer (223) contains the natural graphite in a larger proportion than the regions (A2, A3) not facing the positive electrode active material layer (223), and the regions (A2, A3) not facing the positive electrode active material layer (223) contain the artificial graphite in a larger proportion than the region (A1) facing the positive electrode active material layer (223).
公开/授权文献
- US20140248528A1 LITHIUM-ION SECONDARY BATTERY 公开/授权日：2014-09-04
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