All-solid-state lithium-sulfur battery based on a nanoconfined LiBH4 electrolyte

Supti Das, Peter Ngene, Poul Norby, Tejs Vegge, Petra E. De Jongh, Didier Blanchard

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Abstract

In this work we characterize all-solid-state lithium-sulfur batteries based on nano-confined LiBH4 in mesoporous silica as solid electrolytes. The nano-confined LiBH4 has fast ionic lithium conductivity at room temperature, 0.1 mScm-1, negligible electronic conductivity and its cationic transport number (t+ = 0.96), close to unity, demonstrates a purely cationic conductor. The electrolyte has an excellent stability against lithium metal. The behavior of the batteries is studied by cyclic voltammetry and repeated charge/discharge cycles in galvanostatic conditions. The batteries show very good performance, delivering high capacities versus sulfur mass, typically 1220 mAhg-1 after 40 cycles at moderate temperature (55°C), 0.03 C rates and working voltage of 2 V.
Original languageEnglish
JournalJournal of the Electrochemical Society
Volume163
Issue number9
Pages (from-to)A2029-A2034
Number of pages6
ISSN0013-4651
DOIs
Publication statusPublished - 2016

Bibliographical note

This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.

Keywords

  • All-solid-state battery
  • Battery
  • Fast ionic conductor
  • Lithium sulfur battery
  • Solid-electrolyte

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