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Characterising lithium-ion electrolytes via operando Raman microspectroscopy

Author

Listed:
  • Jack Fawdon

    (University of Oxford)

  • Johannes Ihli

    (University of Oxford
    Paul Scherrer Institut)

  • Fabio La Mantia

    (Universtät Bremen, Energiespeicher-und Energiewandlersysteme)

  • Mauro Pasta

    (University of Oxford
    The Faraday Institution, Quad One, Harwell Science and Innovation Campus)

Abstract

Knowledge of electrolyte transport and thermodynamic properties in Li-ion and beyond Li-ion technologies is vital for their continued development and success. Here, we present a method for fully characterising electrolyte systems. By measuring the electrolyte concentration gradient over time via operando Raman microspectroscopy, in tandem with potentiostatic electrochemical impedance spectroscopy, the Fickian “apparent” diffusion coefficient, transference number, thermodynamic factor, ionic conductivity and resistance of charge-transfer were quantified within a single experimental setup. Using lithium bis(fluorosulfonyl)imide (LiFSI) in tetraglyme (G4) as a model system, our study provides a visualisation of the electrolyte concentration gradient; a method for determining key electrolyte properties, and a necessary technique for correlating bulk intermolecular electrolyte structure with the described transport and thermodynamic properties.

Suggested Citation

  • Jack Fawdon & Johannes Ihli & Fabio La Mantia & Mauro Pasta, 2021. "Characterising lithium-ion electrolytes via operando Raman microspectroscopy," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24297-0
    DOI: 10.1038/s41467-021-24297-0
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    Cited by:

    1. Zhuangzhuang Cui & Zhuangzhuang Jia & Digen Ruan & Qingshun Nian & Jiajia Fan & Shunqiang Chen & Zixu He & Dazhuang Wang & Jinyu Jiang & Jun Ma & Xing Ou & Shuhong Jiao & Qingsong Wang & Xiaodi Ren, 2024. "Molecular anchoring of free solvents for high-voltage and high-safety lithium metal batteries," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    2. Shobhan Dhir & Ben Jagger & Alen Maguire & Mauro Pasta, 2023. "Fundamental investigations on the ionic transport and thermodynamic properties of non-aqueous potassium-ion electrolytes," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    3. Cheng Chi & Gongze Liu & Meng An & Yufeng Zhang & Dongxing Song & Xin Qi & Chunyu Zhao & Zequn Wang & Yanzheng Du & Zizhen Lin & Yang Lu & He Huang & Yang Li & Chongjia Lin & Weigang Ma & Baoling Huan, 2023. "Reversible bipolar thermopower of ionic thermoelectric polymer composite for cyclic energy generation," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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