What question did this study set out to answer?

Synthesize and critically assess advances in composite polymer electrolyte membranes designed to overcome conductivity and stability limitations at operating temperatures exceeding 80 °C.

July 11, 2019MembranesOpen Access

Composite Membranes for High Temperature PEM Fuel Cells and Electrolysers: A Critical Review

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Authors

XSXinwei Sun SSStian Christopher Simonsen TNTruls Norby

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Overview

Critical review evaluates composite polymer electrolyte membranes for high-temperature operation, highlighting strategies like inorganic fillers and acid doping to enhance proton conductivity.

Key Points

Synthesize and critically assess advances in composite polymer electrolyte membranes designed to overcome conductivity and stability limitations at operating temperatures exceeding 80 °C.
Critically reviewed literature on state-of-the-art perfluorosulfonic acid (PFSA) membranes and alternative high-temperature composite polymers.
Evaluated performance mechanisms including hydrophilic inorganic fillers for water retention, acid-doped aromatic polymers (PBI and SPEEK), and electrically conductive catalyst binders.
Standard PFSA membranes demonstrate reduced mechanical stability, chemical durability, and proton conductivity above 80 °C under low relative humidity.
Inorganic fillers sustain water retention through hydrophilicity, while acid-doped PBI and SPEEK facilitate proton transport via Brønsted acid sites without requiring liquid water channels.
Modified polymer binders with integrated electronic conductivity improve charge transfer across catalyst layers.

Cite This Study

Sun et al. (2019) studied this question.

synapsesocial.com/papers/6a8b9495fe910689a2893701 https://doi.org/10.3390/membranes9070083

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July 11, 2019MembranesOpen Access

Composite Membranes for High Temperature PEM Fuel Cells and Electrolysers: A Critical Review

View Full Paper

Ask AI

Bookmark

Authors

XSXinwei Sun SSStian Christopher Simonsen TNTruls Norby

Discussion

Member takes

Overview

Critical review evaluates composite polymer electrolyte membranes for high-temperature operation, highlighting strategies like inorganic fillers and acid doping to enhance proton conductivity.

Key Points

Synthesize and critically assess advances in composite polymer electrolyte membranes designed to overcome conductivity and stability limitations at operating temperatures exceeding 80 °C.
Critically reviewed literature on state-of-the-art perfluorosulfonic acid (PFSA) membranes and alternative high-temperature composite polymers.
Evaluated performance mechanisms including hydrophilic inorganic fillers for water retention, acid-doped aromatic polymers (PBI and SPEEK), and electrically conductive catalyst binders.
Standard PFSA membranes demonstrate reduced mechanical stability, chemical durability, and proton conductivity above 80 °C under low relative humidity.
Inorganic fillers sustain water retention through hydrophilicity, while acid-doped PBI and SPEEK facilitate proton transport via Brønsted acid sites without requiring liquid water channels.
Modified polymer binders with integrated electronic conductivity improve charge transfer across catalyst layers.

Cite This Study

Sun et al. (2019) studied this question.

synapsesocial.com/papers/6a8b9495fe910689a2893701 https://doi.org/10.3390/membranes9070083

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