| abstract |
The content of metal elements such as alkali metals, alkaline earth metals, and heavy metals that can be suitably used as carbon materials for electronic parts such as carbon materials for negative electrodes of nonaqueous electrolyte batteries is sufficiently reduced. In addition, a method for producing a soybean-derived carbide is provided. An alkali metal, alkaline earth metal, heavy metal, etc. in a carbon precursor is obtained by immersing a carbon precursor derived from soybeans in an organic acid aqueous solution with at least one renewal of the organic acid aqueous solution. The manufacturing method of the carbide | carbonized_material derived from soybeans including the process of reducing content of the metal element of this, and the process of carbonizing the obtained carbon precursor. [Selection figure] None |