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Efficient Construction of a C60 Interlayer for Mechanically Robust, Dendrite-free, and Ultrastable Solid-State Batteries

Journal Article · · iScience
 [1];  [2];  [3];  [2];  [2];  [2];  [4];  [5];  [2];  [6]
  1. Tsinghua Univ., Beijing (China). Tsinghua-Berkeley Shenzhen Institute (TBSI); OSTI
  2. Tsinghua Univ., Beijing (China). Tsinghua-Berkeley Shenzhen Institute (TBSI)
  3. Northern Illinois Univ., DeKalb, IL (United States). Dept. of Chemistry and Biochemistry
  4. Tsinghua Univ., Beijing (China). Tsinghua Shenzhen International Graduate School. Shenzhen Key Lab. of Power Battery Safety Research and Shenzhen Geim Graphene Center
  5. Northern Illinois Univ., DeKalb, IL (United States). Dept. of Chemistry and Biochemistry; Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
  6. Tsinghua Univ., Beijing (China). Tsinghua-Berkeley Shenzhen Institute (TBSI); Tsinghua Univ., Beijing (China). Tsinghua Shenzhen International Graduate School. Shenzhen Key Lab. of Power Battery Safety Research and Shenzhen Geim Graphene Center; Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
Interfacial instability between solid electrolytes (SEs) and lithium metal remains a daunting challenge for solid-sate batteries. Here, a conformal C60 interlayer is efficiently constructed on Li1.5Al0.5Ge1.5(PO4)3 (LAGP) SEs by physical vapor deposition, and an ideal interfacial contact is achieved via forming an ionically conducting matrix of LixC60 with lithium metal. The obtained LixC60 is beneficial to hinder the growth of lithium dendrites at interface and release the local stress during the lithiation and delithiation. As a result, the Li/LAGP-C60/Li symmetric cells demonstrate ultra-stable cycling performance for more than 4,500 h at a current density of 0.034 mA cm-2 . The Li/LAGP-C60/LiFePO4 full cells deliver a reversible capacity of 152.4 mAh g-1 at room temperature, and the capacity retention rate is 85% after more than 100 cycles. This work provides a feasible and scalable strategy to improve the SEs/Li interface for high-performance solid-state batteries.
Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1815832
Alternate ID(s):
OSTI ID: 1840593
Journal Information:
iScience, Journal Name: iScience Journal Issue: 10 Vol. 23; ISSN 2589-0042
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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