NEGATIVE ELECTRODE COMPOSITION FOR ELECTRIC STORAGE DEVICE, NEGATIVE ELECTRODE INCLUDING THE COMPOSITION, ELECTRIC STORAGE DEVICE, AND METHOD FOR PRODUCING NEGATIVE ELECTRODE FOR ELECTRIC STORAGE DEVICE

Abstract

Provided is a method for producing a negative electrode for an electric storage device, the method comprising the steps of: preparing a negative electrode composition comprising a negative electrode active material that reversibly carries a sodium ion, metal sodium, and a liquid dispersion medium for dispersing them; allowing a negative electrode current collector to hold the negative electrode composition; evaporating at least part of the liquid dispersion medium from the negative electrode composition held by the negative electrode current collector, thereby giving a negative electrode precursor comprising the negative electrode active material, the metal sodium, and the negative electrode current collector; and bringing the negative electrode precursor into contact with an electrolyte having sodium ion conductivity, thereby doping the negative electrode active material with sodium eluted from the metal sodium.