Reducing the noble metal and titanium content of anode PTLs in PEM water electrolysis

January 1, 2026Open Access

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This research explores alternatives to noble metal coatings and the reduction of titanium in anode porous transport layers for PEM water electrolysis.
Tested noble metal-free coatings like titanium nitride and tantalum in single cell tests.
Utilized electrochemical impedance spectroscopy and scanning electron microscopy with EDX analysis for stability assessment.
Applied stainless steel-based PTLs with titanium coatings as a corrosion protective measure.
Identified several noble metal-free coatings that maintain stability and performance in PEMWE.
Demonstrated that titanium layer thickness can provide adequate corrosion protection.
Extracted performance data from dynamic wind profile operation of PEMWE single cells with commercial PTLs.

Investigates anode PTL materials for PEM water electrolysis, suggesting effective alternatives for reducing noble metal usage.

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Sarah Zerressen (2026) studied this question.

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