Engineering#11 in January 2026 EditionHigh-entropy alloy catalysts for alkaline water oxidation with overpotential below 190 mV at 1000 mA/cm²
Zhi-Wei Qian, Martin Becker, Ayesha Siddiqui et al.
OPENSTEM EDITORIAL SUMMARY
What the research examines
Materials engineers synthesize nanoporous FeCoNiCrMn high-entropy alloy electrocatalysts, achieving alkaline oxygen evolution with an ultra-low overpotential of 188 mV at an industrial current density of 1,000 mA/cm² over 3,000 hours of continuous operation.
Why it may matter
Solves the efficiency bottleneck of green hydrogen production without requiring precious platinum or iridium metals.
What to examine carefully
Surface dissolution and dynamic leaching of chromium during high-current operation require sacrificial surface passivating buffers.
Editorial scope: This is a concise, independently written introduction based on the publisher information, not a full systematic review or independent replication. It must not replace reading the original methods, limitations and conclusions.
STUDENT RESEARCH LENS · ORIGINAL OPENSTEM NOTES
Try a small, reproducible follow-up
Extract Tafel slopes and electrochemically active surface areas (ECSA) from cyclic voltammetry and electrochemical impedance data.
Questions to investigate
- How does the cocktail effect across five elemental metals optimize the adsorption free energy of *OH and *OOH intermediates?
- What operando spectroscopic techniques tracked phase reconstruction into oxyhydroxide active surface layers?
These are independently proposed educational investigations, not activities that the original research authors claim to have completed.
Publication & researcher information
JournalNature Energy
Published online2026-01-03
Authors (selected)Zhi-Wei Qian, Martin Becker, Ayesha Siddiqui et al.
University / laboratoryMax-Planck-Institut für Eisenforschung
CountryGermany
Multi-author research may involve universities in several countries. Unverified institutions and contact addresses are not inferred from authors' names.