Uniform High Ionic Conducting Lithium Sulfide Protection Layer for Stable Lithium Metal Anode

Hao Chen, Allen Pei, Dingchang Lin, Jin Xie, Ankun Yang, Jinwei Xu, Kaixiang Lin, Jiangyan Wang, Hansen Wang, Feifei Shi, David Boyle, Yi Cui

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Artificial solid-electrolyte interphase (SEI) is one of the key approaches in addressing the low reversibility and dendritic growth problems of lithium metal anode, yet its current effect is still insufficient due to insufficient stability. Here, a new principle of “simultaneous high ionic conductivity and homogeneity” is proposed for stabilizing SEI and lithium metal anodes. Fabricated by a facile, environmentally friendly, and low-cost lithium solid-sulfur vapor reaction at elevated temperature, a designed lithium sulfide protective layer successfully maintains its protection function during cycling, which is confirmed by both simulations and experiments. Stable dendrite-free cycling of lithium metal anode is realized even at a high areal capacity of 5 mAh cm−2, and prototype Li–Li4Ti5O12 cell with limited lithium also achieves 900 stable cycles. These findings give new insight into the ideal SEI composition and structure and provide new design strategies for stable lithium metal batteries.

Original languageEnglish (US)
Article number1900858
JournalAdvanced Energy Materials
Volume9
Issue number22
DOIs
StatePublished - Jun 12 2019

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Chen, H., Pei, A., Lin, D., Xie, J., Yang, A., Xu, J., Lin, K., Wang, J., Wang, H., Shi, F., Boyle, D., & Cui, Y. (2019). Uniform High Ionic Conducting Lithium Sulfide Protection Layer for Stable Lithium Metal Anode. Advanced Energy Materials, 9(22), [1900858]. https://doi.org/10.1002/aenm.201900858