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Langmuir–Blodgett artificial solid-electrolyte interphases for practical lithium metal batteries

Author

Listed:
  • Mun Sek Kim

    (Korea Institute of Science and Technology)

  • Ji-Hyun Ryu

    (Korea Institute of Science and Technology
    Korea University)

  • Deepika

    (Korea Institute of Science and Technology)

  • Young Rok Lim

    (Korea Institute of Science and Technology
    Korea University)

  • In Wook Nah

    (Korea Institute of Science and Technology)

  • Kwang-Ryeol Lee

    (Korea Institute of Science and Technology)

  • Lynden A. Archer

    (Cornell University)

  • Won Cho

    (Korea Institute of Science and Technology)

Abstract

Practical lithium metal batteries require full and reversible utilization of thin metallic Li anodes. This introduces a fundamental challenge concerning how to create solid-electrolyte interphases (SEIs) that are able to regulate interfacial transport and protect the reactive metal, without adding appreciably to the cell mass. Here, we report on physicochemical characteristics of Langmuir–Blodgett artificial SEIs (LBASEIs) created using phosphate-functionalized reduced graphene oxides. We find that LBASEIs not only meet the challenges of stabilizing the Li anode, but can be facilely assembled in a simple, scalable process. The LBASEI derives its effectiveness primarily from its ability to form a durable coating on Li that regulates electromigration at the anode/electrolyte interface. In a first step towards practical cells in which the anode and cathode capacities are matched, we report that it is possible to achieve stable operations in both coin and pouch cells composed of a thin Li anode with the LBASEI and a high-loading intercalation cathode.

Suggested Citation

  • Mun Sek Kim & Ji-Hyun Ryu & Deepika & Young Rok Lim & In Wook Nah & Kwang-Ryeol Lee & Lynden A. Archer & Won Cho, 2018. "Langmuir–Blodgett artificial solid-electrolyte interphases for practical lithium metal batteries," Nature Energy, Nature, vol. 3(10), pages 889-898, October.
    • Handle: RePEc:nat:natene:v:3:y:2018:i:10:d:10.1038_s41560-018-0237-6
    DOI: 10.1038/s41560-018-0237-6
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