| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a separator realizing a nonaqueous electrolyte lithium ion cell having a good discharge property or cycle property, and the nonaqueous electrolyte lithium ion cell. <P>SOLUTION: The separator for a nonaqueous electrolyte lithium ion cell is structured with a porous film with a thickness of 1 to 50 μm, a porosity a from 30 to 90% and an average hole diameter from 0.01 to 1 μm supporting a nonaqueous electrolyte solution and a gel electrolyte including at least one kind of inorganic fine powders selected from silica and alumina of an average primary particle diameter from 1 to 100 nm. The separator of this kind can be obtained by dipping the porous film in a nonaqueous electrolyte solution after the inorganic fine powder is dispersed in and supported by the porous film. <P>COPYRIGHT: (C)2004,JPO |
