Pure-Phase Cubic Ni1-xMox Alloy Nanoparticles as Low-Cost and Earth Abundant Electrocatalysts
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Aug 10, 2023
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Sep 2, 2020
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Sep 4, 2019
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Low-cost and earth abundant, Ni1−xMox alloy nanocrystals, with sizes ranging from 18-43 nm and varying Mo composition (0.0-11.4%), were produced by a colloidal chemistry method for alkaline HER reactions. For a water splitting current density of ˜10 mA/cm2, these alloys demonstrate over-potentials of −62 to −177 mV, which are comparable to commercial Pt-based electrocatalysts (−68 to −129 mV). The cubic Ni0.934Mo0.066 alloy nanocrystals exhibit the highest activity as alkaline HER electrocatalysts, outperforming commercial Pt/C (20 wt %) catalyst.
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