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

摘要

PROBLEM TO BE SOLVED: To provide negative electrode active material capable of manufacturing a sodium ion battery having high safety property and satisfactory battery performance.SOLUTION: A sodium ion battery having high safety property and satisfactory battery performance by using transition metal oxide having a layered crystal structure consisting of a transition metal layer including tetravalent Ti, and mixing simple orthorhombic lattice and body center orthorhombic lattice.SELECTED DRAWING: None