Volume 7, Issue 6 1800787
Full Paper

Rice Husk-Based 3D Porous Silicon/Carbon Nanocomposites as Anode for Lithium-Ion Batteries

Xiaoyong Fan

Xiaoyong Fan

School of Materials Science and Engineering, Chang'an University, Xi'an, Shaanxi, 710061 Shaanxi, China

Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004 China

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Baipeng Yin

Baipeng Yin

Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004 China

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Tianhui Wu

Tianhui Wu

Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004 China

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Man Feng

Man Feng

Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004 China

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Guang Cong Zhang

Guang Cong Zhang

Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004 China

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Siheng Li

Siheng Li

Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117576 Singapore

Shenzhen Wamat New Material Technology Co. Ltd., Level 5, Feimoshangfang Center, Beihuan Blvd., Shangcun Community, Gongming, Guangming District, Shenzhen, Guangdong, 518000 China

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Shoufeng Tang

Shoufeng Tang

Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004 China

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Jianmin Gu

Corresponding Author

Jianmin Gu

Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004 China

State Key Laboratory of Metastable Materials Science and Technology (MMST), Yanshan University, Qinhuangdao, 066004 China

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Bin Wen

Corresponding Author

Bin Wen

State Key Laboratory of Metastable Materials Science and Technology (MMST), Yanshan University, Qinhuangdao, 066004 China

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Li Lu

Corresponding Author

Li Lu

Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117576 Singapore

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First published: 14 February 2019
Citations: 14

Abstract

Silicon/carbon (Si/C) nanocomposites with 3D porous structure are prepared by a high-temperature hydrothermal treatment and subsequent magnesiothermic reduction using rice husks (RHs) and NaCl as Si/C sources and potential porogens. In this strategy, interconnected and uniform nanopores are introduced into RHs under the assistance of NaCl and high pressure while the organic components are carbonized, and the intermediate products (porous SiO2/C nanocomposites) are formed. The porous structure is maintained well during the high-temperature hydrothermal treatment. After the magnesiothermic reduction of the porous SiO2/C nanocomposites, a 3D porous Si/C nanocomposite is formed, which provides rapid transferring channels for the lithium ions and accommodates volumetric changes during electrochemical cycling, leading to an improved electrochemical performance.

Conflict of Interest

The authors declare no conflict of interest.

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