MATERIAL FOR LITHIUM ION SECONDARY BATTERY NEGATIVE ELECTRODE, MANUFACTURING METHOD THEREOF, LITHIUM ION SECONDARY BATTERY NEGATIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a material for a lithium ion secondary battery negative electrode, a lithium ion secondary battery negative electrode and a lithium ion secondary battery which enable the materialization of a lithium ion secondary battery superior in high rate characteristic without sacrificing the capacity, initial charge and discharge efficiencies and cycle characteristics.SOLUTION: A material for a lithium ion secondary battery negative electrode comprises carbonaceous-material coated graphite particles including graphite particles having cavities thereinside coated with carbonaceous material. With the carbonaceous-material coated graphite particles, the volume of pores of 1 nm or below determined according to HK method based on a nitrogen adsorption isotherm is 0.0010-0.0020 cm/g, and the volume of pores of 1-100 nm determined by BJH method is 0.020-0.040 cm/g. The material for a negative electrode is used to arrange a lithium ion secondary battery negative electrode and a lithium ion secondary battery.