CARBON MATERIAL FOR POSITIVE ELECTRODE ACTIVATOR OF NONAQUEOUS ELECTROLYTIC SOLUTION SECONDARY BATTERY, POSITIVE ELECTRODE OF NONAQUEOUS ELECTROLYTIC SOLUTION SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTIC SOLUTION SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a carbon material for a positive electrode activator of a nonaqueous electrolytic solution secondary battery with high-density and high-capacity, a positive electrode of a nonaqueous electrolytic solution secondary battery including the carbon material, and a nonaqueous electrolytic solution secondary battery using the positive electrode.

SOLUTION: As to the carbon material for the positive electrolytic activator of the nonaqueous electrolytic solution secondary battery composed of at least a positive electrode to/from which mainly anion is inserted/separated; a negative electrode capable of storing and releasing metallic lithium or lithium ions; and a nonaqueous electrolytic solution made by dissolving a lithium salt into a nonaqueous solvent, the material having X-ray diffraction intensity ratio I2θ=22.3/I2θ=26.4by the CuKα-line of 0.15 or less, (wherein I2θ=22.3, I2θ=26.4represent diffraction intensities at 2θ=22.3°, 2θ=26.4°, respectively) is used. A carbonaceous material with ≤0.15 of I2θ=22.3/I2θ=26.4is one with a low content of amorphous carbon and the ratio of the amorphous carbon contained in the carbonaceous material is low, so that a high discharging-capacity positive electrode of a nonaqueous electrolytic solution secondary battery can be realized.

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