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

摘要

PROBLEM TO BE SOLVED: To provide a negative electrode active material for a sodium ion battery, improved in Na desorbing capacity.SOLUTION: The present invention provides a negative electrode active material for a sodium ion battery, which includes an active material comprising a LiTiOphase and having a BET specific surface area of 3.6 m/g or less and a conducting material as a composite with the active material.