Hydrothermal synthesis of porous TiO 2 microspheres as an efficient sulfur host for enhanced lithium–sulfur batteries

A porous TiO 2 particle is synthesized and used as a sulfur host. The obtained TiO 2 material provides a large number of pores that can accommodate sulfur, and the porous structure also enables effective contact between the host material and lithium polysulfides. The TiO 2 /S electrode shows excelle...

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Bibliographic Details
Published in:Materials express 2020-10, Vol.10 (10), p.1692-1696
Main Authors: Song, Haishen, Kuang, Qiujuan, Yuan, Hailiang, Chen, Hezhang, Xu, Guorong, Tang, Anping, Liu, Lihua
Format: Article
Language:English
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Summary:A porous TiO 2 particle is synthesized and used as a sulfur host. The obtained TiO 2 material provides a large number of pores that can accommodate sulfur, and the porous structure also enables effective contact between the host material and lithium polysulfides. The TiO 2 /S electrode shows excellent electrochemical performance, exhibiting a capacity loss of 0.17% per cycle and a Coulombic efficiency of 97.7% during cycling at 0.5 C. The appealing results are due to the porous characteristics of the TiO 2 material and the chemical adsorption between the TiO 2 and lithium polysulfides.
ISSN:2158-5849
DOI:10.1166/mex.2020.1808