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Li2CO3-affiliative mechanism for air-accessible interface engineering of garnet electrolyte via facile liquid metal painting

Author

Listed:
  • Junwei Meng

    (Shanghai Institute of Ceramics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yang Zhang

    (Shanghai Institute of Ceramics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xuejun Zhou

    (Shanghai Institute of Ceramics, Chinese Academy of Sciences)

  • Meng Lei

    (Shanghai Institute of Ceramics, Chinese Academy of Sciences)

  • Chilin Li

    (Shanghai Institute of Ceramics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Garnet based solid-state batteries have the advantages of wide electrochemical window and good chemical stability. However, at Li-garnet interface, the poor interfacial wettability due to Li2CO3 passivation usually causes large resistance and unstable contact. Here, a Li2CO3-affiliative mechanism is proposed for air-accessible interface engineering of garnet electrolyte via facile liquid metal (LM) painting. The natural LM oxide skin enables a superior wettability of LM interlayer towards ceramic electrolyte and Li anode. Therein the removal of Li2CO3 passivation network is not necessary, in view of its delamination and fragmentation by LM penetration. This dissipation effect allows the lithiated LM nanodomains to serve as alternative Li-ion flux carriers at Li-garnet interface. This mechanism leads to an interfacial resistance as small as 5 Ω cm2 even after exposing garnet in air for several days. The ultrastable Li plating and stripping across LM painted garnet can last for 9930 h with a small overpotential.

Suggested Citation

  • Junwei Meng & Yang Zhang & Xuejun Zhou & Meng Lei & Chilin Li, 2020. "Li2CO3-affiliative mechanism for air-accessible interface engineering of garnet electrolyte via facile liquid metal painting," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17493-x
    DOI: 10.1038/s41467-020-17493-x
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    Cited by:

    1. Chao Zhu & Till Fuchs & Stefan A. L. Weber & Felix. H. Richter & Gunnar Glasser & Franjo Weber & Hans-Jürgen Butt & Jürgen Janek & Rüdiger Berger, 2023. "Understanding the evolution of lithium dendrites at Li6.25Al0.25La3Zr2O12 grain boundaries via operando microscopy techniques," Nature Communications, Nature, vol. 14(1), pages 1-14, December.

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