| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery with high electric characteristics and stably working even at a high temperature, and enhancing the production efficiency by improving the shelf life of the paint. <P>SOLUTION: In the battery having a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte, the positive electrode contains at least one kind of carbon material having an average primary particle size of 10-100 nm, a binder of polyvinylidene fluoride, vinylidene fluoride- hexafluoropropane copolymer, or the like, and a compound having a pyrolidone skeleton, and the saturation of the black color of the electrode is specified to 1.20 or more. <P>COPYRIGHT: (C)2004,JPO |
