Rice husks-derived hierarchical porous SiO2@C as efficient polysulfide mediator for Li-S batteries

Wei Su; Chao Luo; Biao Gao; Xuming Zhang; Jijiang Fu; Yang Zheng; Paul K. Chu

doi:10.1016/j.matlet.2021.129926

Author(s)

Wei Su
Chao Luo
Biao Gao
Xuming Zhang
Jijiang Fu
Yang Zheng

Related Research Unit(s)

Detail(s)

Original language	English
Article number	129926
Journal / Publication	Materials Letters
Volume	296
Online published	21 Apr 2021
Publication status	Published - 1 Aug 2021

Link(s)

DOI	DOI https://doi.org/10.1016/j.matlet.2021.129926 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85104921945&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(c2e7ba1b-9e0c-4e09-8e9b-182b104cfd9d).html

Abstract

The serious shuttle effect and sluggish redox kinetics hinder the practical implementation of Li-S batteries. Here, we proposed a general method for large-scale synthesis of hierarchical porous SiO₂@C host derived from waste rice husks. The prepared SiO₂@C-2.5S cathode exhibits superior electrochemical properties, which can be attributed to the physical adsorption of porous carbon shell and chemical anchoring effect of SiO₂ nanoparticles. Moreover, the hierarchical porous carbon matrix provides a highly conductive channel for rapid electron and ion transport, and offers enough space for the volume expansion of elemental S during the reaction.

Research Area(s)

Carbon materials, Chemical affinity, Energy storage and conversion, Li-S batteries, Physical confinement

SDG 7 - Affordable and Clean Energy

Citation Format(s)

[ RIS ] [ BibTeX ]

Rice husks-derived hierarchical porous SiO₂@C as efficient polysulfide mediator for Li-S batteries. / Su, Wei; Luo, Chao; Gao, Biao et al.
In: Materials Letters, Vol. 296, 129926, 01.08.2021.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Su, W, Luo, C, Gao, B, Zhang, X, Fu, J, Zheng, Y & Chu, PK 2021, 'Rice husks-derived hierarchical porous SiO₂@C as efficient polysulfide mediator for Li-S batteries', Materials Letters, vol. 296, 129926. https://doi.org/10.1016/j.matlet.2021.129926

Su, W., Luo, C., Gao, B., Zhang, X., Fu, J., Zheng, Y., & Chu, P. K. (2021). Rice husks-derived hierarchical porous SiO₂@C as efficient polysulfide mediator for Li-S batteries. Materials Letters, 296, Article 129926. https://doi.org/10.1016/j.matlet.2021.129926

Su W, Luo C, Gao B, Zhang X, Fu J, Zheng Y et al. Rice husks-derived hierarchical porous SiO₂@C as efficient polysulfide mediator for Li-S batteries. Materials Letters. 2021 Aug 1;296:129926. Epub 2021 Apr 21. doi: 10.1016/j.matlet.2021.129926

Su, Wei ; Luo, Chao ; Gao, Biao et al. / Rice husks-derived hierarchical porous SiO₂@C as efficient polysulfide mediator for Li-S batteries. In: Materials Letters. 2021 ; Vol. 296.