| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide core/shell type fine particles capable of composing a lithium secondary battery having a gel-like electrolyte, excellent in battery performances (especially charge/discharge cycle characteristic) and safety, also good in productivity, and the lithium secondary battery comprising the fine particles. <P>SOLUTION: This core/shell type fine particle is composed of a shell part containing a polymer compound dissolvable or gelatinizable in an organic solvent and a core part being a fine particle stable to the organic solvent at a room temperature, where the polymer compound in the shell part is chemically bound with the core part, and the particle diameter in a dry state is ≤15 μm. The lithium secondary battery has the core/shell type fine particles in its insulating layer for insulating the space between a positive electrode and a negative electrode. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
