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

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 m 2 g −1 , 5 wt% Ni 75 Cu...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2023-11, Vol.59 (92), p.13719-13722
Main Authors: Boué, Jean-Félix, Espinet, Cédric, Amigues, Simon, Mesguich, David, Cornu, David, Holade, Yaovi, Cambedouzou, Julien, Laurent, Christophe
Format: Article
Language:English
Subjects:
Carbon nanotubes
Chemical Sciences
Controllability
Copper
Copper base alloys
Electrodes
Hydrogen evolution reactions
Material chemistry
Nickel
Spark plasma sintering
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Summary: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 m 2 g −1 , 5 wt% Ni 75 Cu 25 ) 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. This work provides a new strategy to synthesize a library of robust electrocatalytic electrodes containing nickel-copper alloys and carbon nanotubes for the hydrogen evolution reaction.
ISSN:1359-7345
1364-548X
DOI:10.1039/d3cc04472f