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August 7, 2026Journal of the American Chemical Society

Hexaphenylbenzene NodesReshape Hydroxide TransportEnergetics in Rigid Microporous Membranes

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Authors

WLWenfeng LiWJWentao JinWYWeisheng Yu

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Overview

Randomized trial demonstrates improved hydroxide transport in membranes, indicating efficient energy management for fuel cells.

Key Points

  • This research investigates how the incorporation of hexaphenylbenzene affects hydroxide transport in rigid microporous membranes.
  • Incorporation of hexaphenylbenzene into poly(aryl piperidinium) framework to create microporosity.
  • Density functional theory and free-energy analysis used to evaluate transport energetics.
  • Performance testing at 90 °C with conductivity and activation energy measurements.
  • Achieved conductivity of 168.6 mS cm–1 at 90 °C with 12.7 kJ mol–1 activation energy.
  • Membrane swelled only 12.1% with 75.6% water uptake and retained 97.4% conductivity after 2000 h in 2 M KOH.
  • Demonstrated peak fuel cell power density of 2.50 W cm–2 and electrolyzer current density of 8.05 A cm–2 at 2.0 V over 2500 h.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/6a758c3d847ab6d26c020345https://doi.org/10.1021/jacs.6c07266
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