Dual Active Site Engineering in Porous NiW Bimetallic Alloys for Enhanced Alkaline Hydrogen Evolution Reaction
China University of Geosciences · Cardiff University
Abstract
Abstract Utilizing dual active sites in electrocatalysts creates a synergistic effect, enabling the independent optimization of H 2 O dissociation and intermediate adsorption/desorption, which in turn enhances the efficiency of the hydrogen evolution reaction (HER). Herein, a porous NiW bimetallic alloy electrocatalyst using a dynamic H 2 bubble template (DHBT) strategy is fabricated. This electrocatalyst capitalizes on the synergistic effect of dual active sites, achieving industrial‐level current densities of 500 and 1000 mA cm −2 for HER in 1.0 M KOH, with low overpotentials of 198 and 264 mV, respectively. It also demonstrates excellent stability over a 200 h test. Theoretical studies reveal that alloying…
Citation impact
- FWCI
- 16.04
- Percentile
- 100%
- References
- 72
Authors
7Topics & keywords
- Materials science
- Bimetallic strip
- Porosity
- Dual (grammatical number)
- Chemical engineering
- Metallurgy
- Inorganic chemistry
- Composite material