Organosulfide-plasticized solid-electrolyte interphase layer enables stable lithium metal anodes for long-cycle lithium-sulfur batteries

Guoxing Li, Yue Gao, Xin He, Qingquan Huang, Shuru Chen, Seong H. Kim, Donghai Wang

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

Lithium metal is a promising anode candidate for the next-generation rechargeable battery due to its highest specific capacity (3860 mA h g-1) and lowest potential, but low Coulombic efficiency and formation of lithium dendrites hinder its practical application. Here, we report a self-formed flexible hybrid solid-electrolyte interphase layer through co-deposition of organosulfides/organopolysulfides and inorganic lithium salts using sulfur-containing polymers as an additive in the electrolyte. The organosulfides/organopolysulfides serve as "plasticizer" in the solid-electrolyte interphase layer to improve its mechanical flexibility and toughness. The as-formed robust solid-electrolyte interphase layers enable dendrite-free lithium deposition and significantly improve Coulombic efficiency (99% over 400 cycles at a current density of 2 mA cm-2). A lithium-sulfur battery based on this strategy exhibits long cycling life (1000 cycles) and good capacity retention. This study reveals an avenue to effectively fabricate stable solid-electrolyte interphase layer for solving the issues associated with lithium metal anodes.

Original languageEnglish (US)
Article number850
JournalNature communications
Volume8
Issue number1
DOIs
StatePublished - Dec 1 2017

Fingerprint

lithium sulfur batteries
Interphase
Solid electrolytes
solid electrolytes
Lithium
Sulfur
Electrolytes
Anodes
Electrodes
anodes
lithium
Metals
cycles
metals
dendrites
Dendrites
Plasticizers
plasticizers
Secondary batteries
toughness

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

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Organosulfide-plasticized solid-electrolyte interphase layer enables stable lithium metal anodes for long-cycle lithium-sulfur batteries. / Li, Guoxing; Gao, Yue; He, Xin; Huang, Qingquan; Chen, Shuru; Kim, Seong H.; Wang, Donghai.

In: Nature communications, Vol. 8, No. 1, 850, 01.12.2017.

Research output: Contribution to journalArticle

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