发明授权
US07615314B2 Electrode structure for lithium secondary battery and secondary battery having such electrode structure 失效
具有这种电极结构的锂二次电池和二次电池的电极结构

Electrode structure for lithium secondary battery and secondary battery having such electrode structure
摘要:
An electrode structure for a lithium secondary battery including: a main active material layer including a metal powder selected from silicon, tin and an alloy thereof that can store and discharge lithium by electrochemical reaction, and a binder of an organic polymer; and a current collector. The main active material layer includes a powder of a support material for supporting the electron conduction of the main active material layer in addition to the metal powder and the powder of the support material are particles having a spherical, pseudo-spherical or pillar shape with an average particle size of 0.3 to 1.35 times the thickness of the main active material layer. The support material is one or more selected from graphite, oxides of transition metals and metals that do not electrochemically form alloy with lithium. Organic polymer compounded with a conductive polymer is used for the binder.
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