POROUS SILICON OXYCARBIDE CERAMIC, MANUFACTURING METHOD THEREFOR, POROUS SILICON OXYCARBIDE COMPOSITE MATERIAL AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide silicon oxycarbide ceramic excellent in discharge capacity and cycle property and exhibiting high input characteristic when used as an anode active material for a nonaqueous electrolyte secondary battery.SOLUTION: There is provide porous silicon oxycarbide ceramic having a tap density of 1.10 g/cmto 1.50 g/cmwhen 1000 times tapping is conducted in the case of an average particle diameter Dof 5 to 30 m and a total pore volume at a relative pressure of a nitrogen adsorption isothermal curve of 0.986 of 0.03 to 0.500 cm/g.