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Superconcentrated electrolytes for a high-voltage lithium-ion battery

Author

Listed:
  • Jianhui Wang

    (University of Tokyo)

  • Yuki Yamada

    (University of Tokyo
    Elements Strategy Initiative for Catalysts and Batteries, Kyoto University)

  • Keitaro Sodeyama

    (Elements Strategy Initiative for Catalysts and Batteries, Kyoto University
    JST PRESTO
    International Center for Materials Nanoarchitectonics, National Institute for Materials Science)

  • Ching Hua Chiang

    (University of Tokyo)

  • Yoshitaka Tateyama

    (Elements Strategy Initiative for Catalysts and Batteries, Kyoto University
    International Center for Materials Nanoarchitectonics, National Institute for Materials Science)

  • Atsuo Yamada

    (University of Tokyo
    Elements Strategy Initiative for Catalysts and Batteries, Kyoto University)

Abstract

Finding a viable electrolyte for next-generation 5 V-class lithium-ion batteries is of primary importance. A long-standing obstacle has been metal-ion dissolution at high voltages. The LiPF6 salt in conventional electrolytes is chemically unstable, which accelerates transition metal dissolution of the electrode material, yet beneficially suppresses oxidative dissolution of the aluminium current collector; replacing LiPF6 with more stable lithium salts may diminish transition metal dissolution but unfortunately encounters severe aluminium oxidation. Here we report an electrolyte design that can solve this dilemma. By mixing a stable lithium salt LiN(SO2F)2 with dimethyl carbonate solvent at extremely high concentrations, we obtain an unusual liquid showing a three-dimensional network of anions and solvent molecules that coordinate strongly to Li+ ions. This simple formulation of superconcentrated LiN(SO2F)2/dimethyl carbonate electrolyte inhibits the dissolution of both aluminium and transition metal at around 5 V, and realizes a high-voltage LiNi0.5Mn1.5O4/graphite battery that exhibits excellent cycling durability, high rate capability and enhanced safety.

Suggested Citation

  • Jianhui Wang & Yuki Yamada & Keitaro Sodeyama & Ching Hua Chiang & Yoshitaka Tateyama & Atsuo Yamada, 2016. "Superconcentrated electrolytes for a high-voltage lithium-ion battery," Nature Communications, Nature, vol. 7(1), pages 1-9, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12032
    DOI: 10.1038/ncomms12032
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    Cited by:

    1. Shuoqing Zhang & Ruhong Li & Nan Hu & Tao Deng & Suting Weng & Zunchun Wu & Di Lu & Haikuo Zhang & Junbo Zhang & Xuefeng Wang & Lixin Chen & Liwu Fan & Xiulin Fan, 2022. "Tackling realistic Li+ flux for high-energy lithium metal batteries," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    2. Zhi Chang & Huijun Yang & Xingyu Zhu & Ping He & Haoshen Zhou, 2022. "A stable quasi-solid electrolyte improves the safe operation of highly efficient lithium-metal pouch cells in harsh environments," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    3. Yan Zhao & Tianhong Zhou & Timur Ashirov & Mario El Kazzi & Claudia Cancellieri & Lars P. H. Jeurgens & Jang Wook Choi & Ali Coskun, 2022. "Fluorinated ether electrolyte with controlled solvation structure for high voltage lithium metal batteries," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    4. Hyeokjin Kwon & Hyun-Ji Choi & Jung-kyu Jang & Jinhong Lee & Jinkwan Jung & Wonjun Lee & Youngil Roh & Jaewon Baek & Dong Jae Shin & Ju-Hyuk Lee & Nam-Soon Choi & Ying Shirley Meng & Hee-Tak Kim, 2023. "Weakly coordinated Li ion in single-ion-conductor-based composite enabling low electrolyte content Li-metal batteries," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    5. Xiaobo Zhu & Tobias U. Schülli & Xiaowei Yang & Tongen Lin & Yuxiang Hu & Ningyan Cheng & Hiroki Fujii & Kiyoshi Ozawa & Bruce Cowie & Qinfen Gu & Si Zhou & Zhenxiang Cheng & Yi Du & Lianzhou Wang, 2022. "Epitaxial growth of an atom-thin layer on a LiNi0.5Mn1.5O4 cathode for stable Li-ion battery cycling," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    6. Ziyang Lu & Huijun Yang & Jianming Sun & Jun Okagaki & Yoongkee Choe & Eunjoo Yoo, 2024. "Conformational isomerism breaks the electrolyte solubility limit and stabilizes 4.9 V Ni-rich layered cathodes," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    7. Guinevere A. Giffin, 2022. "The role of concentration in electrolyte solutions for non-aqueous lithium-based batteries," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    8. Chutao Wang & Zongqiang Sun & Yaqing Liu & Lin Liu & Xiaoting Yin & Qing Hou & Jingmin Fan & Jiawei Yan & Ruming Yuan & Mingsen Zheng & Quanfeng Dong, 2024. "A weakly coordinating-intervention strategy for modulating Na+ solvation sheathes and constructing robust interphase in sodium-metal batteries," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    9. Seongjae Ko & Xiao Han & Tatau Shimada & Norio Takenaka & Yuki Yamada & Atsuo Yamada, 2023. "Electrolyte design for lithium-ion batteries with a cobalt-free cathode and silicon oxide anode," Nature Sustainability, Nature, vol. 6(12), pages 1705-1714, December.

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