METHOD FOR MANUFACTURING POROUS SILICON OXYCARBIDE CERAMIC AND METHOD FOR MANUFACTURING POROUS SILICON OXYCARBIDE CERAMIC COMPOSITE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a method capable of simple and low-cost industrially large-scale production of porous silicon oxycarbide exhibiting excellent discharge capacity and cycle property (cycle maintenance rate) when used as an anode active material for a nonaqueous electrolyte secondary battery.SOLUTION: There is provided a method for manufacturing porous silicon oxycarbide by mixing a silicon-containing organic compound with a dispersion where a carbon-containing compound and a fine porous forming agent are dispersed to prepare a mixture, conducting a polymerization treatment of resulting mixture under a temperature condition at 0 to 200°C, primary firing the resulting production at a temperature of over 200°C and 800°C or less, pulverizing, classifying to prepare primary fired powder, and then second firing the primary fired powder under the temperature condition at over 800°C and 1150°C or less.