POSITIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, PROCESS OF MANUFACTURING THE SAME, AND LITHIUM ION SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a positive electrode for a lithium ion secondary battery that may resist to high temperature and high voltage driving.SOLUTION: At least part of surfaces of positive electrode active material particles are coated with a polymer coat layer that includes an amino group and a phosphate group. Since the polymer coat layer contains a phosphoric acid based polymer, capacity drop during a cycle test is suppressed.