| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery which has a high graphitization degree, has a high capacity mass density by using spherical graphite hardly to be crushed even in a repetition of charging and discharging, and is excellent in stability and security. SOLUTION: An electrode for use in the secondary battery is made of a carbon material, the carbon material is made of the spherical graphite and the spherical graphite is made of graphite crystals arranged radially from a center portion of the spherical graphite toward its surface. The average surface separation of (002) face of the graphite crystals is≤0.3362 nm. COPYRIGHT: (C)2004,JPO |
