TY - JOUR
T1 - Uniform High Ionic Conducting Lithium Sulfide Protection Layer for Stable Lithium Metal Anode
AU - Chen, Hao
AU - Pei, Allen
AU - Lin, Dingchang
AU - Xie, Jin
AU - Yang, Ankun
AU - Xu, Jinwei
AU - Lin, Kaixiang
AU - Wang, Jiangyan
AU - Wang, Hansen
AU - Shi, Feifei
AU - Boyle, David
AU - Cui, Yi
N1 - Funding Information:
Part of this work was performed at the Stanford Nano Shared Facilities and Stanford Nanofabrication Facility. This work was partially supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy under the Battery Materials Research program and the Battery500 Consortium program. A.P. acknowledges support by the Department of Defense through the National Defense Science & Engineering Graduate Fellowship Program and support by the Stanford Graduate Fellowship.
Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/6/12
Y1 - 2019/6/12
N2 - 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.
AB - 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.
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U2 - 10.1002/aenm.201900858
DO - 10.1002/aenm.201900858
M3 - Article
AN - SCOPUS:85065083095
SN - 1614-6832
VL - 9
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 22
M1 - 1900858
ER -