Development of bulk-type all-solid-state lithium-sulfur battery using LiBH4 electrolyte

Atsushi Unemoto, Syun Yasaku, Genki Nogami, Masaru Tazawa, Mitsugu Taniguchi, Motoaki Matsuo, Tamio Ikeshoji, Shin Ichi Orimo

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72 Citations (Scopus)

Abstract

Stable battery operation of a bulk-type all-solid-state lithium-sulfur battery was demonstrated by using a LiBH4 electrolyte. The electrochemical activity of insulating elemental sulfur as the positive electrode was enhanced by the mutual dispersion of elemental sulfur and carbon in the composite powders. Subsequently, a tight interface between the sulfur-carbon composite and the LiBH4 powders was manifested only by cold-pressing owing to the highly deformable nature of the LiBH4 electrolyte. The high reducing ability of LiBH4 allows using the use of a Li negative electrode that enhances the energy density. The results demonstrate the interface modification of insulating sulfur and the architecture of an all-solid-state Li-S battery configuration with high energy density.

Original languageEnglish
Article number083901
JournalApplied Physics Letters
Volume105
Issue number8
DOIs
Publication statusPublished - 2014 Aug 25

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Unemoto, A., Yasaku, S., Nogami, G., Tazawa, M., Taniguchi, M., Matsuo, M., Ikeshoji, T., & Orimo, S. I. (2014). Development of bulk-type all-solid-state lithium-sulfur battery using LiBH4 electrolyte. Applied Physics Letters, 105(8), [083901]. https://doi.org/10.1063/1.4893666