| 摘要 |
PROBLEM TO BE SOLVED: To prevent a conductor from being decomposed due to a negative pole active substance and improve battery capacity, cycle characteristic, and voltage flatness by constituting which a specific negative pole and respective specific positive pole and conductor. SOLUTION: A battery is constituted with a negative pole, a positive pole, and a nonaqeous ion conductor. The negative pole is subjected to oxidizing process at temperatures of 200-700 degrees C in air for example, and made to have a negative pole active substance of graphite grains, as amorphous carbon is made to adhere to its surface by vapor-phase heat decomposition of propane for example. The positive pole has an active substance of a chalcogen compound (such as LiCoO2 ) containing Li. The nonaqueous ion conductor is for example a conductor comprising propylene carbonate and ethylene carbonate by a volume ratio of 9:1-1:9. That is, since graphite particles are oxidation-treated, amorphous carbon adheres securely to the graphite particles and the conductor is prevented from decomposing due to separation of a amorphous carbon. |
