NEGATIVE ELECTRODE AND LITHIUM ION SECONDARY BATTERY ARRANGED BY USE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide: a negative electrode which enables the enhancement in cycle characteristic; and a lithium ion secondary battery using such a negative electrode.SOLUTION: A negative electrode of the present invention comprises: a negative electrode active material including graphite; and a V-C-O-P-F layer on the negative electrode active material. A lithium ion secondary battery comprises the negative electrode.SELECTED DRAWING: Figure 1