CARBON ELECTRODE FOR ELECTRIC DOUBLE-LAYER CAPACITOR

摘要

PROBLEM TO BE SOLVED: To provide a carbon electrode for an electric double-layer capacitor of high capacity. SOLUTION: In an electric double-layer capacitor, expanded carbon fiber is used as the carbon electrode and sulfuric acid is used as the electrolyte. The expanded carbon fiber is obtained by performing electrolytic treatment for raw material carbon fiber such as pitch-based carbon fiber, by forming a graphite intercalation compound, such as nitric acid-graphite intercalation compound, and by decomposing thereafter the graphite intercalation compound by heat treatment. COPYRIGHT: (C)2004,JPO