ANODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, PRODUCING METHOD THEREOF, AND LITHIUM ION SECONDARY BATTERY

摘要

PURPOSE: A negative electrode material for a lithium ion secondary battery is provided to ensure high charge and discharge capacity and cycleability by improving degradation of a negative electrode material accompanied in a rechargeable cycle. CONSTITUTION: A negative electrode material(10) for a lithium ion secondary battery is such that a negative electrode active material(2), in which 1-40at% Sn and 3-20at% at least one kind selected from 4A, 5A, and 6A group elements are dispersed in amorphous carbon, on a negative electrode current collector(1).