Negative electrode mixture for sodium ion battery, and sodium ion battery and method for manufacturing thereof

Abstract

The present disclosure provides a negative electrode mixture for a sodium ion battery that can improve charge capacity and discharge capacity, and charge-discharge efficiency, a sodium ion battery comprising such a negative electrode mixture, and a method for manufacturing thereof. The negative electrode mixture for a sodium ion battery of the present disclosure comprises a negative electrode active material and zirconium oxide, wherein the negative electrode active material comprises hard carbon, and a ratio of a mass of the zirconium oxide relative to a total mass of the hard carbon and the zirconium oxide is 1% by mass or more and 20% by mass or less. The sodium ion battery 1 of the present disclosure comprises a negative electrode active material layer 20, and the negative electrode active material layer 20 comprises a negative electrode mixture of the present disclosure.

Dependencies are inferred from the claim text.