| 摘要 |
PROBLEM TO BE SOLVED: To provide an organic electrolyte secondary battery with good load characteristics at low temperature without remarkable drop in charging/ discharging capacity at room temperature. SOLUTION: In an organic electrolyte secondary battery using a lithium- containing transition metal chalcogenide as a positive active material, a mixture of carbon having a spacing d002 of 3.37Å or less and a crystallite size in the direction of (c) axis Lc of 400Å or more and carbon having a spacing d002 of 3.60Å or more and a crystallite size in the direction of (c) axis Lc of 100Å or less is used as a negative active material. The mixing ratio of the carbon having a spacing d002 of 3.37Åor less and a crystallite size in the direction of (c) axis Lc of 400Å or more and the carbon having a spacing d002 of 360Åor more and a crystallite size in the direction of (c) axis Lc of 100Å or less is 98:2 to 85:15 by weight. |
