POSITIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY, ITS MANUFACTURING METHOD AND LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a positive electrode material for a lithium secondary battery having high electron conductivity even at ultralow temperatures, to provide its manufacturing method, and to provide a lithium secondary battery using the positive electrode material.

SOLUTION: This positive electrode material for a lithium secondary battery is prepared by compounding a positive electrode active material having secondary particles 3 formed of primary particles 1 formed of Li composite oxides with ultrafine carbon fibers 2 each having a length equivalent to or smaller than the diameter of each secondary particle of the positive electrode active material. The diameter of each carbon fiber is 10-100 nm.

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