INGREDIENT COMPOSITION OF CARBON MATERIAL FOR ELECTRIC DOUBLE-LAYER CAPACITOR AND MANUFACTURING METHOD THEREFOR, AND ELECTRIC DOUBLE-LAYER CAPACITOR AND MANUFACTURING METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide an ingredient composition of carbon material for an electric double-layer capacitor, by which the capacitance and the energy density of the electric double layer capacitor can be unfailingly improved and to provide its manufacturing method, an electric double-layer capacitor which exhibits high capacitance and high energy density, and to provide its manufacturing method. SOLUTION: The ingredient composition 10 of carbon material for the electric double-layer capacitor contains microcrystal carbon, having a lamellar crystal structure similar to graphite becomes carbon material for the electric double- layer capacitor by being subjected to an activation treatment. It exhibits a grinding strength index HGI of ASTMD-409-71 standard is 50 or more, an interlayer distance d002 of microcrystal carbon obtained by an X-ray diffraction method is 0.343 nm or shorter and a size Lc002 of the crystallite of microcrystal carbon obtained by the X-ray diffraction method is 3.0 nm or smaller.