METHOD FOR PRODUCING ANODE ACTIVE MATERIAL FOR SECONDARY BATTERY, ANODE ACTIVE MATERIAL FOR SECONDARY BATTERY, METHOD FOR PRODUCING ANODE FOR SECONDARY BATTERY, ANODE FOR SECONDARY BATTERY, AND SECONDARY BATTERY

摘要

This method for producing an anode active material for a secondary battery is provided with a step for forming titanium dioxide by means of hydrolysis by adding a titanium-containing compound to an acidic aqueous solution, and furthermore, by means of adding a compound containing an alkaline earth metal and a condensed phosphate, the surface of the titanium dioxide is covered by the condensed phosphate containing the alkaline earth metal in a manner so that the amount of elemental phosphorus atoms and the amount of alkaline earth metal are each in the range of 0.1 to 10 mass % with respect to the mass of titanium dioxide, thus synthesizing the anode active material (12).

主权项

1. A method for producing an anode active material for a secondary battery, which is formed by coating a condensed phosphate containing an alkaline earth metal element on a surface of titanium dioxide, and contains 0.1 to 10% by mass of each of elemental phosphorus and the alkaline earth metal element with respect to the titanium dioxide, the method comprising:
a step of forming titanium dioxide by adding a titanium-containing compound to an acidic aqueous solution, to which phosphoric acid has been added, to carry out hydrolysis, and further adding a condensed phosphate and a compound containing an alkaline earth metal to the acidic aqueous solution, thereby coating a condensed phosphate containing an alkaline earth metal on the surface of the titanium dioxide.