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A saccharide-based binder for efficient polysulfide regulations in Li-S batteries

Author

Listed:
  • Yingyi Huang

    (Monash University)

  • Mahdokht Shaibani

    (Monash University)

  • Tanesh D. Gamot

    (Monash University)

  • Mingchao Wang

    (Monash University)

  • Petar Jovanović

    (Monash University)

  • M. C. Dilusha Cooray

    (Monash University)

  • Meysam Sharifzadeh Mirshekarloo

    (Monash University)

  • Roger J. Mulder

    (CSIRO)

  • Nikhil V. Medhekar

    (Monash University)

  • Matthew R. Hill

    (CSIRO
    Monash University)

  • Mainak Majumder

    (Monash University)

Abstract

The viability of lithium-sulfur batteries as an energy storage technology depends on unlocking long-term cycle stability. Most instability stems from the release and transport of polysulfides from the cathode, which causes mossy growth on the lithium anode, leading to continuous consumption of electrolyte. Therefore, development of a durable cathode with minimal polysulfide escape is critical. Here, we present a saccharide-based binder system that has a capacity for the regulation of polysulfides due to its reducing properties. Furthermore, the binder promotes the formation of viscoelastic filaments during casting which endows the sulfur cathode with a desirable web-like microstructure. Taken together this leads to 97% sulfur utilisation with a cycle life of 1000 cycles (9 months) and capacity retention (around 700 mAh g−1 after 1000 cycles). A pouch cell prototype with a specific energy of up to 206 Wh kg−1 is produced, demonstrating the promising potential for practical applications.

Suggested Citation

  • Yingyi Huang & Mahdokht Shaibani & Tanesh D. Gamot & Mingchao Wang & Petar Jovanović & M. C. Dilusha Cooray & Meysam Sharifzadeh Mirshekarloo & Roger J. Mulder & Nikhil V. Medhekar & Matthew R. Hill &, 2021. "A saccharide-based binder for efficient polysulfide regulations in Li-S batteries," Nature Communications, Nature, vol. 12(1), pages 1-15, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25612-5
    DOI: 10.1038/s41467-021-25612-5
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    Cited by:

    1. John D. Graham & John A. Rupp & Eva Brungard, 2021. "Lithium in the Green Energy Transition: The Quest for Both Sustainability and Security," Sustainability, MDPI, vol. 13(20), pages 1-23, October.

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