发明授权
- 专利标题: Rechargeable lithium battery for tolerating discharge to zero volts
- 专利标题(中): 可充电锂电池,可放电至零伏
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申请号: US11482778申请日: 2006-07-06
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公开(公告)号: US08637184B2公开(公告)日: 2014-01-28
- 发明人: Hisashi Tsukamoto , Clay Kishiyama , Mikito Nagata , Hiroshi Nakahara , Tiehua Piao
- 申请人: Hisashi Tsukamoto , Clay Kishiyama , Mikito Nagata , Hiroshi Nakahara , Tiehua Piao
- 申请人地址: US CA Sylmar
- 专利权人: Quallion LLC
- 当前专利权人: Quallion LLC
- 当前专利权人地址: US CA Sylmar
- 代理机构: Gavrilonch, Dodd & Lindsey, LLP
- 主分类号: H01M4/00
- IPC分类号: H01M4/00
摘要:
The battery includes a positive electrode having a first active material on a positive substrate. The first active material includes LiNixCo1-x-yMyO2 wherein M is chosen from the group consisting of Mn, Al, Mg, B, Ti, and Li, and wherein 0.5≦x≦1 and 0≦y≦0.3. The battery also includes a negative electrode having a second active material on a negative substrate. The second active material includes carbon. The negative electrode is susceptible to damage when a voltage exceeding a Damage Potential Threshold (DPT) is applied to the negative electrode. The DPT is lower than the maximum positive operating potential of the battery. The positive and negative electrodes define a Zero Volt Crossing Potential (ZCP) relative to a reference level when the voltage between the positive electrode and the negative electrode is zero. The positive electrode and the negative electrode are configured such that the value of the ZCP is less than the value of the DPT at a predetermined temperature.
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