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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

1 Scopus Citations
View graph of relations

Author(s)

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

Detail(s)

Original languageEnglish
Article number129926
Journal / PublicationMaterials Letters
Volume296
Online published21 Apr 2021
Publication statusPublished - 1 Aug 2021

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

Citation Format(s)

Rice husks-derived hierarchical porous SiO2@C as efficient polysulfide mediator for Li-S batteries. / Su, Wei; Luo, Chao; Gao, Biao; Zhang, Xuming; Fu, Jijiang; Zheng, Yang; Chu, Paul K.

In: Materials Letters, Vol. 296, 129926, 01.08.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review