Spark plasma sintered catalytic nickel–copper alloy and carbon nanotube electrodes for the hydrogen evolution reaction

Literature Information

Publication Date 2023-10-23
DOI 10.1039/D3CC04472F
Impact Factor 6.222
Authors

Cédric Espinet, Simon Amigues, David Mesguich, Christophe Laurent


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Abstract

We report the proof-of-concept of spark plasma sintered (SPS) consolidated mesoporous composite catalytic electrodes based on nickel–copper alloys and carbon nanotubes for the electrocatalytic hydrogen evolution reaction (HER) in alkaline media. The optimized electrode (203 m2 g−1, 5 wt% Ni75Cu25) operated at −0.1 A cm−2 (current of −0.15 A) for 24 h with a stable overpotential of about 0.3 V. This newly described freestanding SPS approach allows the rational control of specific surface area, metal loading, and electrocatalytic performance, thus opening a new route to catalytic electrodes with controllable physical and catalytic properties.

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