| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery, in which a combination of positive electrode active materials having different battery characteristics with each other is used, and thereby mutual characteristics can be complemented with good balance. <P>SOLUTION: A lithium ion secondary battery of the present invention includes: a positive electrode containing a positive electrode active material including a sulfur-containing organic compound and a lithium-containing inorganic compound; a negative electrode containing a negative electrode active material including a silicon-based material which is preliminarily doped with lithium and comprises silicon and/or a silicon compound; and a nonaqueous electrolyte. <P>COPYRIGHT: (C)2013,JPO&INPIT |
