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

Journal Article · · Advanced Energy Materials

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–Li 4 Ti 5 O 12 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.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1532475
Alternate ID(s):
OSTI ID: 1510099
Journal Information:
Advanced Energy Materials, Vol. 9, Issue 22; ISSN 1614-6832
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 305 works
Citation information provided by
Web of Science

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Porosity‐ and Graphitization‐Controlled Fabrication of Nanoporous Silicon@Carbon for Lithium Storage and Its Conjugation with MXene for Lithium‐Metal Anode journal December 2019
Inside or Outside: Origin of Lithium Dendrite Formation of All Solid‐State Electrolytes journal September 2019
In Situ Conversion of Cu 3 P Nanowires to Mixed Ion/Electron‐Conducting Skeleton for Homogeneous Lithium Deposition journal November 2019
In Situ Generation of Artificial Solid‐Electrolyte Interphases on 3D Conducting Scaffolds for High‐Performance Lithium‐Metal Anodes journal January 2020
4.5 V High‐Voltage Rechargeable Batteries Enabled by the Reduction of Polarization on the Lithium Metal Anode journal August 2019
4.5 V High‐Voltage Rechargeable Batteries Enabled by the Reduction of Polarization on the Lithium Metal Anode journal October 2019
Enabling reversible redox reactions in electrochemical cells using protected LiAl intermetallics as lithium metal anodes journal October 2019