SILICON MATERIAL AND PRODUCTION METHOD THEREOF

摘要

This silicon material production method is characterized by involving a melt preparation step for preparing a Ca and x at% Si alloy (42 ≦ x ≦ 72) melt, a hardening step for cooling the melt with a rapid cooling device to harden the Ca and x at% Si alloy, a synthesis step for reacting the hardened Ca and x at% Si alloy and oxygen to obtain a layered silicon compound, and a heating step for heating the layered silicon compound at greater than or equal to 300°C.