Controllable conversion of rice husks to Si/C and SiC/C composites in molten salts

• 作者: Da Pang Wei Weng Jing Zhou Dong Gu Wei Xiao
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（4）
• 页码范围: 102-107
• 页数: 6页
• 语种: 英文

摘要

Direct conversion of biomass to functional materials is an ideal solution to relieve challenges in environ-mental and energy sustainability.We herein demonstrate a molten salt thermoelectrolysis of rice husks(RHs)mainly consisting of organic mass and biosilica to achieve high-efficiency and upgraded utilization of both Si and C in RHs.By coupling pyrolysis of organic mass with electrochemical reduction of silica in molten salts,the thermoelectrolysis of RHs in molten CaCl2-NaCl at 800℃refines the RHs and acid-leached RHs to SiC nanowire/C(SiC-NW/C)and Si nanoparticle/C(Si-NP/C),respectively.The present study highlights the molten salt thermoelectrolysis for reclamation of biomass wastes in an affordable and controllable manner.