| 摘要 |
The present invention relates to a lithium-ion battery element which is chosen from the separator and the electroactive layers and which results from the forming of a microcomposite powder comprising a fluoropolymer in the form of particles between 0.1 and 0.5 mum in size and fillers. The present invention also relates to a lithium-ion battery electrode comprising the above electroactive layer combined with a metal layer. The present invention also relates to a lithium-ion battery comprising at least one element such as the separator, the electroactive layer or the electrode defined above. This microcomposite powder can be prepared by coatomization of an aqueous solution containing the fluoropolymer particles between 0.1 and 0.5 mum in size and of an aqueous solution of the fillers. It can also be prepared by flocculation or coagulation of an aqueous solution containing the fluoropolymer particles between 0.1 and 0.5 mum in size and of an aqueous solution of the fillers. The forming of this microcomposite powder consists in preferably forming a film in order to obtain an electrode film or a separator film. Next, these films are joined together to form a battery. This step (assembly, electrolyte filling, packaging, etc.) is known per se.
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