Extracting lignin-SiO2 composites from Si-rich biomass to prepare Si/C anode materials for lithium ions batteries

Li, Yixin, Liu, Li, Liu, Xiaoyang, Feng, Yi, Xue, Beichen, Yu, Liyun, Ma, Lijie, Zhu, Yanchao, Chao, Yimin and Wang, Xiaofeng (2021) Extracting lignin-SiO2 composites from Si-rich biomass to prepare Si/C anode materials for lithium ions batteries. Materials Chemistry and Physics, 262. ISSN 0254-0584

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Abstract

The comprehensive utilization of Si-rich biomass is restrained by macromolecular lignin and a large amount of ash. In this study, rice husks (RHs) are treated as a representative by alkali extraction and acid precipitation, and the obtained lignin-SiO2 composite is modified by carbonazation, ball milling, magnesiothermic reduction and additives. Through these processes, a Si/C composite with excellent electrochemical properties is obtained and performs stable cycling performance with high specific capacity retention of 572 mA h g−1 at 1 A g−1 after 1000 cycles. This introduced method provides a potential for utilizing Si-rich biomass comprehensively and preparing desirable Si/C anode materials from Si-rich biomass derived lignin-SiO2 composites.

Item Type: Article
Uncontrolled Keywords: alkali extraction,lignin-sio composites,si-rich biomass,c anode materials,materials science(all),condensed matter physics ,/dk/atira/pure/subjectarea/asjc/2500
Faculty \ School: Faculty of Science > School of Chemistry
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Depositing User: LivePure Connector
Date Deposited: 02 Feb 2021 01:02
Last Modified: 30 Sep 2021 16:11
URI: https://ueaeprints.uea.ac.uk/id/eprint/79124
DOI: 10.1016/j.matchemphys.2021.124331

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