Patent ID: 7572553
Filing Date: 2009-08-11
Classification: H01M,Y02E

Abstract:
1. A high-density electrode, obtained by impregnating a high-density electrode which comprises an electrode active substance and carbon fiber having a fiber filament diameter of 1 to 1,000 nm and has a porosity of 25% or less, with a solid polymer electrolyte, wherein the electrode active substance is a carbon material, wherein the carbon material contains a graphite material in an amount of 50 mass % or more, and the bulk density of the electrode is 1.7 g/cm wherein the graphite material is carbon particles containing, in an amount of 50 mass % or more, graphite particles satisfying the following requirements: (1) C (2) BET specific surface area is 0.2 to 5 m (3) true density is 2.20 g/cm (4) laser Raman R value (the ratio of the intensity of a peak at 1,360 cm