Highly Corrugated Ni Films Electrodeposited onto Boron Doped Diamond Electrodes for Alkaline Water Electrolysis.

ABSTRACT: Ni-based electrocatalysts are among the most active materials for the hydrogen evolution reaction (HER) in alkaline media. In this work, we demonstrate the ability to use films of boron-doped diamond (BDD), a stable and corrosion-resistant electrode material, as a support for highly textured Ni films. Our approach is based on the electrodeposition of NiCu alloy thin-films, followed by electrochemical dealloying. The structure and composition of the electrocatalysts were characterized using scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. In pH 13 KOH, a dealloyed Ni catalyst corresponding to an initial NiCu composition of 68% Ni, gave a HER overpotential at 10 mA cm^-2 of 152 mV. With further analysis, we show that the rate of HER is 2^nd

SUBMITTER: Black AW 

PROVIDER: S-EPMC12598865 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature