发明授权
- 专利标题: Electrode, nonaqueous electrolyte battery, and battery pack
- 专利标题(中): 电极,非水电解质电池和电池组
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申请号: US13679182申请日: 2012-11-16
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公开(公告)号: US09231248B2公开(公告)日: 2016-01-05
- 发明人: Takuya Iwasaki , Hiroki Inagaki , Kazuhiro Yasuda , Keigo Hoshina , Mitsuru Ishibashi , Yorikazu Yoshida , Norio Takami
- 申请人: Takuya Iwasaki , Hiroki Inagaki , Kazuhiro Yasuda , Keigo Hoshina , Mitsuru Ishibashi , Yorikazu Yoshida , Norio Takami
- 申请人地址: JP Tokyo
- 专利权人: KABUSHIKI KAISHA TOSHIBA
- 当前专利权人: KABUSHIKI KAISHA TOSHIBA
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2011-250549 20111116
- 主分类号: H01M4/02
- IPC分类号: H01M4/02 ; H01M4/485 ; H01M2/02 ; H01M4/131 ; H01M10/0525
摘要:
According to one embodiment, an electrode includes a current collector, an active material-containing layer, a first peak, a second peak and a pore volume. The active material-containing layer contains an active material having a lithium absorption potential of 0.4 V (vs. Li/Li+) or more. The first peak has a mode diameter of 0.01 to 0.1 μm in a diameter distribution of pores detected by mercury porosimetry. The second peak has a mode diameter of 0.2 μm (exclusive) to 1 μm (inclusive) in the diameter distribution of pores. The pore volume detected by the mercury porosimetry is within a range of 0.1 to 0.3 mL per gram of a weight of the electrode excluding a weight of the current collector.