Article Fluorinated Amide-Based Electrolytes Induce a Sustained Low-Charging Voltage Plateau under Conditions Verifying the Feasibility of Achieving 500 Wh kg–1 Class Li–O2 Batteries

Kiho Nishioka ; Mizuki Tanaka ; Terumi Goto ; Ronja Haas ; Anja Henss ; Shota Azuma ; Morihiro Saito ; Shoichi Matsuda SAMURAI ORCID (National Institute for Materials ScienceROR) ; Wei Yu ; Hirotomo Nishihara ; Hayato Fujimoto ; Mamoru Tobisu ; Yoshiharu Mukouyama ; Shuji Nakanishi ORCID

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Kiho Nishioka, Mizuki Tanaka, Terumi Goto, Ronja Haas, Anja Henss, Shota Azuma, Morihiro Saito, Shoichi Matsuda, Wei Yu, Hirotomo Nishihara, Hayato Fujimoto, Mamoru Tobisu, Yoshiharu Mukouyama, Shuji Nakanishi. Fluorinated Amide-Based Electrolytes Induce a Sustained Low-Charging Voltage Plateau under Conditions Verifying the Feasibility of Achieving 500 Wh kg–1 Class Li–O2 Batteries. ACS Applied Materials & Interfaces. 2024, 16 (35), 46259-46269. https://doi.org/10.1021/acsami.4c08067

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(abstract)

Although lithium–oxygen batteries (LOBs) hold the promise of high gravimetric energy density, this potential is hindered by high charging voltages. To ensure that the charging voltage remains low, it is crucial to generate discharge products that can be easily decomposed during the successive charging process. In this study, we discovered that the use of amide-based electrolyte solvents containing a fluorinated moiety can notably establish a sustained voltage plateau at low-charging voltages at around 3.5 V. This occurs under conditions that can verify the feasibility of achieving a benchmark energy density value of 500 Wh kg–1. Notably, the achievement of the low-voltage plateau was accomplished solely by relying on the intrinsic properties of the electrolyte solvent. Indeed, synchrotron X-ray diffraction measurements have shown that the use of fluorine-containing amide-based electrolyte solvents results in the formation of highly decomposable discharge products, such as amorphous and Li-deficient lithium peroxides.

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  • In Copyright

    This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsami.4c08067.

Keyword: lithium oxygen battery

Date published: 2024-09-04

Publisher: American Chemical Society (ACS)

Journal:

  • ACS Applied Materials & Interfaces (ISSN: 19448252) vol. 16 issue. 35 p. 46259-46269

Funding:

  • Japan Society for the Promotion of Science 20J20091
  • Japan Society for the Promotion of Science 23H00311
  • Japan Society for the Promotion of Science 23K19269
  • Japan Science and Technology Agency JPMJAL1301
  • Japan Science and Technology Agency JPMJAP2309
  • Japan Science and Technology Agency JPMJPF2016

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5138

First published URL: https://doi.org/10.1021/acsami.4c08067

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Updated at: 2025-08-22 08:30:36 +0900

Published on MDR: 2025-08-22 08:17:07 +0900

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