Importance

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Abstract

Provided are: a carbon material for an electrical storage device which exhibits, even under low-temperature conditions, sufficiently excellent characteristics from the standpoint of resistivity; and a process for manufacturing the same. This carbon material for an electrical storage device is a carbon material made by pulverizing a graphite material and in which the 10% volume cumulative diameter, 50% volume cumulative diameter and 90% volume cumulative diameter are controlled to 0.45 to 1.7 μm, 0.8 to 4.0 μm and 1.55 to 8.9 μm respectively, and the volume average particle diameter distribution has at least a second peak with the highest frequency of appearance and a first peak located on the side of a particle diameter smaller than that of the second peak. The use of the carbon material in an electrical storage device makes it possible to lower the low-temperature charge transfer resistance of the device.

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First Claim