Glass fiber separator coated by boron doped anatase TiO2 for high-rate Li–S battery

Omer Eroglu, Maryam Sadat Kiai*, Huseyin Kizil

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Lithium sulfur batteries with high specific capacity and ultrahigh energy density, are promising candidates for next generation energy storage systems, although polysulfide dissolution and shuttle effect limit its practical application. Herein, we report a facile strategy to overcome shuttle effect and capacity fading via B-doped (1 and 5 wt.%) TiO2 nanopowder coated separator. B dopant with positive polarization in TiO2 structure enhances the chemisorption with negatively charged polysulfides species. Compared with undoped TiO2 separator, the B (1%) and (5%) doped TiO2 coated separators could deliver higher capacities of 1001 and 1293 mAh g−1 after 100 cycles at 1 C after 100 cycles, Also outstanding rate capability of B (5%) doped TiO2 coated separator, enhances active material reutilization ratio as well as alleviates the shuttle effect and provides a promising approach for high performance Li–S batteries.

Original languageEnglish
Article number110917
JournalMaterials Research Bulletin
Volume129
DOIs
Publication statusPublished - Sept 2020

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Ltd

Funding

This work was financially supported by the scientific research projects funding ofIstanbul Technical University. This work was financially supported by the scientific research projects funding of Istanbul Technical University .

FundersFunder number
Istanbul Teknik Üniversitesi
ofIstanbul Technical University

    Keywords

    • Boron-doped titanium dioxide
    • Chemical confinement
    • Electrochemical performance
    • Glass fiber separator
    • Lithium−sulfur battery

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