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Title: Hybrid Polymer/Garnet Electrolyte with a Small Interfacial Resistance for Lithium-Ion Batteries

Journal Article · · Angewandte Chemie (International Edition)
 [1];  [2];  [1];  [2];  [3];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Texas, Austin, TX (United States)
  2. Shanghai Jiao Tong University, Shanghai (China)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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Li7La3Zr2O12-based Li-rich garnets react with water and carbon dioxide in air to form a Li-ion insulating Li2CO3 layer on the surface of the garnet particles, which results in a large interfacial resistance for Li-ion transfer. In this work, we introduce LiF to garnet Li6.5La3Zr1.5Ta0.5O12 (LLZT) to increase the stability of the garnet electrolyte against moist air; the garnet LLZT-2 wt % LiF (LLZT-2LiF) has less Li2CO3 on the surface and shows a small interfacial resistance with Li metal, a solid polymer electrolyte, and organic-liquid electrolytes. Lastly, an all-solid-state Li/polymer/LLZT-2LiF/LiFePO4 battery has a high Coulombic efficiency and long cycle life; a Li-S cell with the LLZT-2LiF electrolyte as a separator, which blocks the polysulfide transport towards the Li-metal, also has high Coulombic efficiency and kept 93 % of its capacity after 100 cycles.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
89233218CNA000001; SC0005397
OSTI ID:
1505978
Report Number(s):
LA-UR-16-27139
Journal Information:
Angewandte Chemie (International Edition), Vol. 56, Issue 3; ISSN 1433-7851
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 400 works
Citation information provided by
Web of Science

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Interface-Engineered Li 7 La 3 Zr 2 O 12 -Based Garnet Solid Electrolytes with Suppressed Li-Dendrite Formation and Enhanced Electrochemical Performance journal October 2018
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Figures / Tables (4)

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Figure 4(p. 5)figure Figure 4

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Related Subjects

36 MATERIALS SCIENCE
25 ENERGY STORAGE
all-solid-state battery
interfacial resistance
Li-rich garnet
Li-S battery
lithium fluoride