| 摘要 |
PROBLEM TO BE SOLVED: To provide a carbonaceous material for the polarized electrode of an electric double-layer capacitor for obtaining high capacitance with a small amount of variation, and to provide a method for manufacturing the polarized electrode. SOLUTION: The electric double-layer capacitor polarized electrode is manufactured by using a carbonaceous material in which a raw material is for example activated with non-baked coke originating from coal or oil, in which the thermal coefficient of expansion measured by an artificial graphite electrode testing method is adjusted within 0.8-2 as the raw material. In the case of the non-baked coke originating from coal, raw coke of coal-based pitch coke is used in which CTE is controlled manufactured by a delayed coker method by using coal-based tar having a quinolin insoluble content of 0.1% or smaller, or the raw coke of coal-based pitch coke is selected for use for satisfying a desired CTE range. COPYRIGHT: (C)2007,JPO&INPIT
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