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Influences from solvents on charge storage in titanium carbide MXenes

Author

Listed:
  • Xuehang Wang

    (Drexel University)

  • Tyler S. Mathis

    (Drexel University)

  • Ke Li

    (Drexel University)

  • Zifeng Lin

    (Université Paul Sabatier
    Sichuan University)

  • Lukas Vlcek

    (Oak Ridge National Laboratory
    University of Tennessee, Knoxville)

  • Takeshi Torita

    (Murata Manufacturing Co., Ltd)

  • Naresh C. Osti

    (Oak Ridge National Laboratory)

  • Christine Hatter

    (Drexel University)

  • Patrick Urbankowski

    (Drexel University)

  • Asia Sarycheva

    (Drexel University)

  • Madhusudan Tyagi

    (National Institute of Standards and Technology
    University of Maryland)

  • Eugene Mamontov

    (Oak Ridge National Laboratory)

  • Patrice Simon

    (Université Paul Sabatier
    Réseau sur le Stockage Electrochimique de l’Energie (RS2E), CNRS FR3459)

  • Yury Gogotsi

    (Drexel University)

Abstract

Pseudocapacitive energy storage in supercapacitor electrodes differs significantly from the electrical double-layer mechanism of porous carbon materials, which requires a change from conventional thinking when choosing appropriate electrolytes. Here we show how simply changing the solvent of an electrolyte system can drastically influence the pseudocapacitive charge storage of the two-dimensional titanium carbide, Ti3C2 (a representative member of the MXene family). Measurements of the charge stored by Ti3C2 in lithium-containing electrolytes with nitrile-, carbonate- and sulfoxide-based solvents show that the use of a carbonate solvent doubles the charge stored by Ti3C2 when compared with the other solvent systems. We find that the chemical nature of the electrolyte solvent has a profound effect on the arrangement of molecules/ions in Ti3C2, which correlates directly to the total charge being stored. Having nearly completely desolvated lithium ions in Ti3C2 for the carbonate-based electrolyte leads to high volumetric capacitance at high charge–discharge rates, demonstrating the importance of considering all aspects of an electrochemical system during development.

Suggested Citation

  • Xuehang Wang & Tyler S. Mathis & Ke Li & Zifeng Lin & Lukas Vlcek & Takeshi Torita & Naresh C. Osti & Christine Hatter & Patrick Urbankowski & Asia Sarycheva & Madhusudan Tyagi & Eugene Mamontov & Pat, 2019. "Influences from solvents on charge storage in titanium carbide MXenes," Nature Energy, Nature, vol. 4(3), pages 241-248, March.
    • Handle: RePEc:nat:natene:v:4:y:2019:i:3:d:10.1038_s41560-019-0339-9
    DOI: 10.1038/s41560-019-0339-9
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    Cited by:

    1. Xinchao Lu & Huachao Yang & Zheng Bo & Biyao Gong & Mengyu Cao & Xia Chen & Erka Wu & Jianhua Yan & Kefa Cen & Kostya (Ken) Ostrikov, 2022. "Aligned Ti 3 C 2 T X Aerogel with High Rate Performance, Power Density and Sub-Zero-Temperature Stability," Energies, MDPI, vol. 15(3), pages 1-12, February.
    2. Ke Li & Juan Zhao & Ainur Zhussupbekova & Christopher E. Shuck & Lucia Hughes & Yueyao Dong & Sebastian Barwich & Sebastien Vaesen & Igor V. Shvets & Matthias Möbius & Wolfgang Schmitt & Yury Gogotsi , 2022. "4D printing of MXene hydrogels for high-efficiency pseudocapacitive energy storage," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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