Control of ion exchange capacity in block copolymer binders enables high hydroxide conductivity at low swelling and improves catalyst activity for AEM water electrolysis

Richárd Wéber; Malte Klingenhof; Oleksandr Dolynchuk; Luis Hagner; Lukas Metzler; Susanne Koch; Mario Zerson; R. Magerle; Peter Strasser; Severin Vierrath; Michael Sommer

doi:10.1039/d6ta00653a

January 1, 2026Journal of Materials Chemistry AOpen Access

Control of ion exchange capacity in block copolymer binders enables high hydroxide conductivity at low swelling and improves catalyst activity for AEM water electrolysis

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Key Points

The aim is to improve hydroxide conductivity and catalyst activity in AEM water electrolysis through tailored polymeric binders.
Development of block copolymer binders with controlled ion exchange capacity.
Evaluation of hydroxide conductivity and catalyst performance in AEMWE.
Achieved significant enhancements in hydroxide conductivity with low swelling of the membrane.
Observed improved catalyst activity in electrolysis applications.

Implication

Demonstrates improved hydroxide conductivity in AEM water electrolysis, suggesting better catalyst performance.

Abstract

The development of membranes for anion exchange membrane water electrolysis (AEMWE) has recently been extremely fruitful, but less effort has been devoted to specific tailoring of polymeric binders to enhance...

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Cite This Study

Wéber et al. (2026) studied this question.

synapsesocial.com/papers/6a0d50dcf03e14405aa9cfd1 https://doi.org/10.1039/d6ta00653a

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Control of ion exchange capacity in block copolymer binders enables high hydroxide conductivity at low swelling and improves catalyst activity for AEM water electrolysis

Key Points

Implication

Abstract

Discussion

Cite This Study

Control of ion exchange capacity in block copolymer binders enables high hydroxide conductivity at low swelling and improves catalyst activity for AEM water electrolysis

Key Points

Implication

Abstract

Discussion

Cite This Study

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