| 摘要 |
PROBLEM TO BE SOLVED: To obtain a positive active material for a secondary battery that is superior in electrical conductivity and superior in filling and dispersing performance to the resin. SOLUTION: The positive active material for a secondary battery is powder of composite positive material particles whose surface is coated with carbon that is obtained by heat-treating a thermosetting phenolic resin or a thermosetting epoxy resin under oxidizing atmosphere. The powder of the composite positive material particles is obtained by coating a thermosetting phenolic resin or a thermosetting epoxy resin of 0.01-10 wt.% to the positive material particle powder, on the powder of the positive material particles, and then by heat- treating at the temperature of 400°C or more under oxidizing atmosphere and carbonizing the resin. COPYRIGHT: (C)2003,JPO |
