Al₂O₃-Assisted Hierarchical Ni–Al Surface Alloying for Scalable Fabrication of Nano-Roughened Ni Foam Cathodes with Superior HER Activity and Durability in Alkaline Water Electrolysis

Jeongha Kim; Hae In Lee; Seonghee Kim; Seongmin Park; Hee Sup Kim; Se-Hun Kwon; Dong-Ha Lim

doi:10.1039/d5ta09747a

January 1, 2026Journal of Materials Chemistry A

Al₂O₃-Assisted Hierarchical Ni–Al Surface Alloying for Scalable Fabrication of Nano-Roughened Ni Foam Cathodes with Superior HER Activity and Durability in Alkaline Water Electrolysis

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Key Points

The aim is to improve hydrogen evolution reaction (HER) activity and durability of Ni foam cathodes in alkaline water electrolysis.
Utilized Al₂O₃-assisted surface alloying technique
Fabricated hierarchical Ni–Al structures on nickel foam
Evaluated electrochemical performance under alkaline conditions
Achieved significantly higher electrochemically active surface area (ECSA)
Improved HER kinetics observed in tested cathodes
Demonstrated enhanced durability over extended operational periods

Implication

This analysis demonstrates improved HER kinetics in alkaline water electrolysis using advanced Ni foam cathodes, indicating enhanced efficiency and durability.

Abstract

Plate-type electrodes in zero-gap alkaline water electrolyzers suffer from severe gas-bubble accumulation and sluggish mass transport, which limit the effective electrochemically active surface area (ECSA) and HER kinetics. Herein, we...

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Kim et al. (2026) studied this question.

synapsesocial.com/papers/69cd7a1b5652765b073a6ff0 https://doi.org/10.1039/d5ta09747a

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Al₂O₃-Assisted Hierarchical Ni–Al Surface Alloying for Scalable Fabrication of Nano-Roughened Ni Foam Cathodes with Superior HER Activity and Durability in Alkaline Water Electrolysis

Key Points

Implication

Abstract

Discussion

Cite This Study

Al₂O₃-Assisted Hierarchical Ni–Al Surface Alloying for Scalable Fabrication of Nano-Roughened Ni Foam Cathodes with Superior HER Activity and Durability in Alkaline Water Electrolysis

Key Points

Implication

Abstract

Discussion

Cite This Study

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