Electrode active material and manufacturing method therefor, electrode mixture, and battery

Abstract

The present disclosure provides an electrode active material comprising hard carbon and capable of improving capacity at low potential and a manufacturing method therefor, an electrode mixture comprising such an electrode active material, and a battery comprising such an electrode mixture. The hard carbon comprised in the electrode active material of the present disclosure has a G′-band, a G-band, and a D-band in a Raman spectrum. The ratio IG′/IG of intensity IG, of the G′-band to intensity IG of the G-band is 0.05 or more. The half-width HwD of D-band is 50 or more and 160 or less. The method for manufacturing the electrode active material of the present disclosure comprises the following steps: providing a raw material comprising carbon, and firing to carbonize the raw material under an inert atmosphere comprising more than 0% and less than 1.0% of air.

Dependencies are inferred from the claim text.