| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyvinylidene fluoride-containing powdered compound for production of a negative electrode of a lithium ion battery. <P>SOLUTION: Modified polyvinylidene fluoride retaining the nature of polyvinylidene fluoride (PVDF) in which ion conductivity is developed in the state of impregnation of an electrolytic solution and it is partially subjected to a dehydrofluorination treatment with an alkali and further subjected to an oxidation treatment with an oxidizer, and a specified carbon material having a relatively large particle diameter whose median particle diameter falls within the range of 13-30 μm are used, thereby the concentration of an active material is increased in a negative electrode. <P>COPYRIGHT: (C)2004,JPO |
