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Five-volt-class high-capacity all-solid-state lithium batteries

Author

Listed:
  • Jun Pyo Son

    (Yonsei University, Department of Chemical and Biomolecular Engineering)

  • Juhyoun Park

    (Yonsei University, Department of Chemical and Biomolecular Engineering)

  • Hae-Yong Kim

    (Dongguk University, Department of Energy and Materials Engineering)

  • Jae-Seung Kim

    (Korea Advanced Institute of Science and Technology (KAIST), Department of Materials Science and Engineering)

  • Yong Bae Song

    (Yonsei University, Department of Chemical and Biomolecular Engineering)

  • Changhoon Kim

    (Yonsei University, Department of Chemical and Biomolecular Engineering)

  • Donghyeok Kim

    (Yonsei University, Department of Chemical and Biomolecular Engineering)

  • Jong Seok Kim

    (Yonsei University, Department of Chemical and Biomolecular Engineering)

  • Junwoo Lee

    (Yonsei University, Department of Battery Engineering)

  • Sunho Ko

    (Dongguk University, Department of Energy and Materials Engineering)

  • Soon-Jae Jung

    (Ulsan National Institute of Science and Technology (UNIST), School of Energy and Chemical Engineering)

  • Seungwoo Choi

    (Ulsan National Institute of Science and Technology (UNIST), School of Energy and Chemical Engineering)

  • Docheon Ahn

    (Pohang Accelerator Laboratory, Beamline Division)

  • Keun Hwa Chae

    (Korea Institute of Science and Technology, Advanced Analysis Centre)

  • Gihan Kwon

    (Brookhaven National Laboratory, National Synchrotron Light Source II)

  • Dominik Wierzbicki

    (Brookhaven National Laboratory, National Synchrotron Light Source II)

  • Yonghua Du

    (Brookhaven National Laboratory, National Synchrotron Light Source II)

  • Hyun-Wook Lee

    (Ulsan National Institute of Science and Technology (UNIST), School of Energy and Chemical Engineering)

  • Dong-Hwa Seo

    (Korea Advanced Institute of Science and Technology (KAIST), Department of Materials Science and Engineering)

  • Kyung-Wan Nam

    (Dongguk University, Department of Energy and Materials Engineering)

  • Yoon Seok Jung

    (Yonsei University, Department of Chemical and Biomolecular Engineering
    Yonsei University, Department of Battery Engineering)

Abstract

Advances in battery technology have been impeded by the voltage constraints of electrolytes. Here we present a high-energy all-solid-state battery design featuring >5 V operation and an ultrahigh areal capacity of 35.3 mAh cm−2; these attributes were enabled by a highly conductive and ultrahigh-voltage stable fluoride solid electrolyte, LiCl–4Li2TiF6 (1.7 × 10−5 S cm−1 at 30 °C). LiCl–4Li2TiF6 shields high-voltage spinel oxide cathodes, achieving 106 mAh g−1 at 2C with 75.2% retention over 500 cycles for LiNi0.5Mn1.5O4, sharply contrasting with the conventional LiNbO3 counterpart, which decomposes and fails to prevent detrimental interfacial degradation. The efficacy of LiCl–4Li2TiF6 is validated across various systems, including LiCoMnO4, LiFe0.5Mn1.5O4 and pouch-type LiNi0.5Mn1.5O4||Li (or Ag–C) all-solid-state batteries, and further demonstrated by operability down to 2.3 V with 258 mAh g−1 and ultrathick 1.8-mm electrodes. This shielding layer with >5 V stability introduces a transformative design paradigm by revisiting the previously forbidden high-voltage cathodes.

Suggested Citation

  • Jun Pyo Son & Juhyoun Park & Hae-Yong Kim & Jae-Seung Kim & Yong Bae Song & Changhoon Kim & Donghyeok Kim & Jong Seok Kim & Junwoo Lee & Sunho Ko & Soon-Jae Jung & Seungwoo Choi & Docheon Ahn & Keun H, 2025. "Five-volt-class high-capacity all-solid-state lithium batteries," Nature Energy, Nature, vol. 10(11), pages 1334-1346, November.
    • Handle: RePEc:nat:natene:v:10:y:2025:i:11:d:10.1038_s41560-025-01865-y
    DOI: 10.1038/s41560-025-01865-y
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