METHOD FOR PRODUCING CARBONACEOUS MATERIAL FOR NEGATIVE ELECTRODES OF NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES

摘要

An object of the present invention is to provide a method of producing, stably and at high yield, a carbonaceous material for non-aqueous electrolyte secondary battery negative electrodes, whose raw material is coffee bean, that has high purity achieved by de-mineralization in which alkali metals such as potassium element and alkaline earth metal such as calcium element are sufficiently removed, and that can guarantee reliability, and an intermediate product for obtaining the same. A raw material composition for producing a carbonaceous material for non-aqueous electrolyte secondary battery negative electrodes comprises a roasted coffee bean-derived organic material having an L value of 18.0 or less. The raw material composition for producing a carbonaceous material for non-aqueous electrolyte secondary battery negative electrodes is formed from a roasted coffee bean-derived organic material having an L value of 19.0 or less.