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Haibo He1, Shihao Song1, Liang Zhai1

  • 1State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Qianjin Avenue 2699, Changchun, 130012, China.

Angewandte Chemie (International Ed. in English)
|June 19, 2024
PubMed
Summary
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Fluoroalkyl-grafted polyoxometalate nanoclusters enhance Nafion membranes for better fuel cells and vanadium flow batteries. These hybrid materials boost proton conductivity and selectivity, improving energy efficiency.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Electrochemistry

Context:

  • Nafion is a widely used proton-exchange membrane in electrochemical devices.
  • Modifying ionic domains in Nafion is crucial for improving its performance.
  • Existing modifications often face trade-offs between conductivity and selectivity.

Purpose:

  • To develop novel supramolecular additives for precise modification of Nafion's ionic domains.
  • To simultaneously enhance proton conductivity and selectivity of Nafion-based membranes.
  • To investigate the impact of these hybrid membranes on fuel cell and vanadium flow battery performance.

Summary:

  • Fluoroalkyl-grafted polyoxometalate nanoclusters were synthesized and incorporated into Nafion.
  • The nanoclusters effectively modified the ionic domains, leading to simultaneous improvements in proton conductivity and selectivity.
Keywords:
Nafion ionic domainsfuel cellspolyoxometalatesproton exchange membranesvanadium redox flow batteries

Related Experiment Videos

  • The resulting hybrid membranes exhibited significantly enhanced power density in fuel cells.

    • Impact:

    • The developed hybrid membranes offer a promising solution for next-generation energy storage and conversion devices.
    • Improved energy efficiency was observed in vanadium flow batteries utilizing these membranes.
    • This work paves the way for advanced materials with tailored ionic transport properties.