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

摘要

PURPOSE: A negative electrode material, a manufacturing method thereof, and a lithium ion secondary battery including thereof are provided to secure the high charge/discharge capacity, and the cycle property, and to easily manufacture the material by a vapor phase epitaxy. CONSTITUTION: A negative electrode material(10) for a lithium ion secondary battery is produced by forming a negative electrode material(2) with Sn and Ag dispersed in amorphous carbon, on a negative electrode current collector(1). The negative electrode material contains more than 50at% of amorphous carbon. The content ratio of the Sn and the Ag is 0.5~4.