ANODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, ITS MANUFACTURING METHOD, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide an anode for nonaqueous electrolyte secondary batter in which an active substance nucleus having a high capacity density is used and moreover, a cycle characteristics is improved as expected by controlling a gas generation caused by a carbon fiber of a conductivity source, and a high capacity and a long service life are realized.

SOLUTION: The anode of a nonaqueous electrolyte secondary battery is composed of a mixture layer containing an active substance nucleus which can charge/discharge lithium ions and a composite anode active substance made of a carbon nano fiber (CNF) deposited on a surface of the above active substance nucleus and a CNF, whose impurities of the surface are removed, is used.

COPYRIGHT: (C)2007,JPO&INPIT