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Composites of Sulfur-Titania Nanotubes Prepared by a Facile Solution Infiltration Route as Cathode Material in Lithium-Sulfur Battery

Mohanty, Shyama Prasad and Kishore, Brij and Nookala, Munichandraiah (2018) Composites of Sulfur-Titania Nanotubes Prepared by a Facile Solution Infiltration Route as Cathode Material in Lithium-Sulfur Battery. In: JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 18 (10). pp. 6830-6837.

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Official URL: https://dx.doi.org/10.1166/jnn.2018.15453

Abstract

Achieving high energy density has been the focus of research in rechargeable batteries. Lithium-sulfur system is attractive due to its high theoretical energy density (2500 Wh kg(-1)). The major problem in Li-S system is associated with the dissolution of lithium polysulfides formed at the cathode during discharge. Shuttling of polysulfides between the cathode and anode during cycling reduces the efficiency of cycling. In the present study, TiO2 nanotubes are prepared from nanoparticles by hydrothermal route. Titania-sulfur composite has been prepared by infiltrating sulfur solution into the TiO2 nanotubes and studied as a cathode material in a non-aqueous electrolyte. Cycling behavior of Li-S cells fabricated using pristine sulfur and TiO2 nanoparticle-sulfur composite is also studied for comparison. Cells with TiO2 nanotubes exhibit better discharge capacity and coulombic efficiency than the cells with TiO2 nanoparticles and pristine sulfur.

Item Type: Journal Article
Additional Information: Copyright of this article belong to AMER SCIENTIFIC PUBLISHERS, 26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Depositing User: Id for Latest eprints
Date Deposited: 18 Jul 2018 15:18
Last Modified: 18 Jul 2018 15:18
URI: http://eprints.iisc.ac.in/id/eprint/60219

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