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A complex hydride lithium superionic conductor for high-energy-density all-solid-state lithium metal batteries

Author

Listed:
  • Sangryun Kim

    (Tohoku University)

  • Hiroyuki Oguchi

    (Tohoku University)

  • Naoki Toyama

    (Tohoku University)

  • Toyoto Sato

    (Tohoku University)

  • Shigeyuki Takagi

    (Tohoku University)

  • Toshiya Otomo

    (High Energy Accelerator Research Organization)

  • Dorai Arunkumar

    (Tohoku University)

  • Naoaki Kuwata

    (Tohoku University)

  • Junichi Kawamura

    (Tohoku University)

  • Shin-ichi Orimo

    (Tohoku University
    Tohoku University)

Abstract

All-solid-state batteries incorporating lithium metal anode have the potential to address the energy density issues of conventional lithium-ion batteries that use flammable organic liquid electrolytes and low-capacity carbonaceous anodes. However, they suffer from high lithium ion transfer resistance, mainly due to the instability of the solid electrolytes against lithium metal, limiting their use in practical cells. Here, we report a complex hydride lithium superionic conductor, 0.7Li(CB9H10)–0.3Li(CB11H12), with excellent stability against lithium metal and a high conductivity of 6.7 × 10−3 S cm−1 at 25 °C. This complex hydride exhibits stable lithium plating/stripping reaction with negligible interfacial resistance ( 2500 Wh kg−1) at a high current density of 5016 mA g−1. The present study opens up an unexplored research area in the field of solid electrolyte materials, contributing to the development of high-energy-density batteries.

Suggested Citation

  • Sangryun Kim & Hiroyuki Oguchi & Naoki Toyama & Toyoto Sato & Shigeyuki Takagi & Toshiya Otomo & Dorai Arunkumar & Naoaki Kuwata & Junichi Kawamura & Shin-ichi Orimo, 2019. "A complex hydride lithium superionic conductor for high-energy-density all-solid-state lithium metal batteries," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09061-9
    DOI: 10.1038/s41467-019-09061-9
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    Cited by:

    1. Toyoto Sato & Shin-ichi Orimo, 2021. "The Crystal Structures in Hydrogen Absorption Reactions of REMgNi 4 -Based Alloys (RE: Rare-Earth Metals)," Energies, MDPI, vol. 14(23), pages 1-10, December.
    2. Muhammad Rizalul Wahid & Bentang Arief Budiman & Endra Joelianto & Muhammad Aziz, 2021. "A Review on Drive Train Technologies for Passenger Electric Vehicles," Energies, MDPI, vol. 14(20), pages 1-24, October.

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