NEGATIVE ELECTRODE ACTIVE MATERIAL FOR SODIUM ION BATTERY, AND SODIUM ION BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a negative electrode active material for a sodium ion battery, having good input/output characteristics.SOLUTION: The present invention provides a negative electrode active material for a sodium ion battery, which comprises a LiTiOphase and has a BET specific surface area of 153 m/g or more or crystalline size of 69 Å or less.