HIGH ORIENTATION CARBON FIBER, ELECTRODE MATERIAL OF ELECTRIC DOUBLE LAYER CAPACITOR AND ELECTRIC DOUBLE LAYER CAPACITOR USING IT, AND METHOD FOR PRODUCING HIGH ORIENTATION CARBON FIBER

摘要

PROBLEM TO BE SOLVED: To provide graphite suitably employed in various electrode materials, a negative electrode material for lithium secondary battery in which the capacity can be increased while exhibiting excellent lifetime performance and a lithium secondary battery.;SOLUTION: The inventive graphite has a conical protrusion of wide skirt in which a boron atom is substituted for a carbon atom at the top of the carbon hexagonal mesh plane of a carbon material. The graphite can be employed in various electrode materials and when it is employed in the electrode material of a lithium secondary battery, a lithium secondary battery having a long lifetime in-which the capacity can be increased while stabilizing the performance can be provided.;COPYRIGHT: (C)2003,JPO