发明名称 |
Secondary lithium ion battery containing a prelithiated anode |
摘要 |
A lithium ion battery that exhibits a significantly improved specific capacity and much longer charge-discharge cycle life. The battery comprises an anode active material that has been prelithiated and pre-pulverized. This anode may be prepared with a method that comprises (a) providing an anode active material; (b) intercalating or absorbing a desired amount of lithium into the anode active material to produce a prelithiated anode active material; (c) comminuting the prelithiated anode active material into fine particles with an average size less than 10μm (preferably <1μm and most preferably <200 nm); and (d) combining multiple fine particles of the prelithiated anode active material with a conductive additive and/or a binder material to form the anode. Preferably, the prelithiated particles are protected by a lithium ion-conducting matrix or coating material. Further preferably, the matrix material is reinforced with nano graphene platelets.
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申请公布号 |
US8241793(B2) |
申请公布日期 |
2012.08.14 |
申请号 |
US20090319114 |
申请日期 |
2009.01.02 |
申请人 |
ZHAMU ARUNA;JANG BOR Z.;NANOTEK INSTRUMENTS, INC. |
发明人 |
ZHAMU ARUNA;JANG BOR Z. |
分类号 |
H01M4/02;H01M4/36;H01M4/38 |
主分类号 |
H01M4/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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