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Intermetallic Fesub.2Mo Nanoparticles on Hierarchical Nanoporous Copper for Efficient Hydrogen Evolution Reaction
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Intermetallic Fesub.2Mo Nanoparticles on Hierarchical Nanoporous Copper for Efficient Hydrogen Evolution Reaction
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Journal Article
Intermetallic Fesub.2Mo Nanoparticles on Hierarchical Nanoporous Copper for Efficient Hydrogen Evolution Reaction
2025
Overview
Developing cost-effective and high-performance non-precious metal-based electrocatalysts for hydrogen evolution reaction is of crucial importance toward sustainable hydrogen energy systems. Herein, we prepare a novel hybrid electrode featuring intermetallic Fe[sub.2]Mo nanoparticles anchored on the hierarchical nanoporous copper skeleton as robust hydrogen evolution electrocatalyst by simple and scalable alloying and dealloying methods. By virtue of the highly active intermetallic Fe[sub.2]Mo nanoparticles and unique bicontinuous nanoporous copper skeleton facilitating ion/molecule transportation, nanoporous Fe[sub.2]Mo/Cu electrode shows excellent hydrogen evolution reaction electrocatalysis, with a low Tafel slope (~71 mV dec[sup.−1]) to realize ampere-level current density of 1 A cm[sup.−2] at a low overpotential of ~200 mV in 1 M KOH electrolyte. Furthermore, nanoporous Fe[sub.2]Mo/Cu electrode exhibits long−term stability exceeding 400 h to maintain ~250 mA cm[sup.−2] at an overpotential of 150 mV. Such outstanding electrocatalytic performance enables the nanoporous Fe[sub.2]Mo/Cu electrode to be an attractive hydrogen evolution reaction catalyst for water splitting in the hydrogen economy.
Publisher
MDPI AG
Subject
