NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-LITHIUM SECONDARY BATTERY, PREPARING METHOD THEREOF, NEGATIVE ELECTRODE FOR NON-LITHIUM SECONDARY BATTERY COMPRISING THE NEGATIVE ELECTRODE ACTIVE MATERIAL, AND NON-LITHIUM SECONDARY BATTERY COMPRISING THE NEGATIVE ELECTRODE

摘要

Disclosed are a negative electrode active material for a non-lithium secondary battery, a method for preparing the same, a negative electrode for the non-lithium secondary battery including the negative electrode active material, and the non-lithium secondary battery including the same. The disclosed negative active material for a non-lithium secondary battery includes a hard carbon, wherein a ratio (ID/IG) of a D band peak intensity (ID) with respect to a G band peak intensity (IG) of the Raman spectrum is 0.8-1.2, and a ratio (Ia/Ic) of an anion peak intensity of acid (Ia) with respect to a carbon 1s peak intensity (Ic) of a spectrum obtained by X-ray photoelectron spectroscopy is 0.01-0.1.