GRAPHITE PARTICLES FOR NEGATIVE ELECTRODE OF NONAQUEOUS SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide graphite particles of high binding property for a negative electrode, free from the decomposition of γ-butyrolactone on graphite surfaces in charging, and remarkable deterioration of charging and discharging efficiency in a nonaqueous secondary battery including γ-butyrolactone in an electrolyte. SOLUTION: The graphite particles are composed of scaly or single-scale-like natural graphitic particles, and heir surfaces adsorbs or are coated with the specific amount of water-soluble high molecules including polyuronide as basic structure.