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 Da Pang;Wei Weng;Jing Zhou;Dong Gu;Wei Xiao

作者机构：School of Resource and Environmental SciencesHubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan UniversityWuhan 430072HubeiChina College of Chemistry and Molecular SciencesHubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan 430072HubeiChina The Institute of Advanced StudiesWuhan UniversityWuhan 430072HubeiChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2021年第30卷第4期

页      面：102-107页

核心收录：

学科分类：0820[工学-石油与天然气工程] 080703[工学-动力机械及工程] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0827[工学-核科学与技术] 0703[理学-化学] 

基　　金：the funding support from the National Natural Science Foundation of China(51722404,51674177,51804221 and 91845113) the National Key R&D Program of China(2018YFE0201703) the China Postdoctoral Science Foundation(2018M642906 and 2019T120684) the Fundamental Research Funds for the Central Universities(2042017kf0200) the Hubei Provincial Natural Science Foundation of China(2019CFA065)。 

主　　题：Rice husks Molten salt Silicon Silicon carbide Electrochemistry 

摘      要：Direct conversion of biomass to functional materials is an ideal solution to relieve challenges in environmental 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 CaCl_(2)-NaCl at 800℃ refines the RHs and acidleached 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.