Low Overpotential Water Splitting Using Cobalt-Cobalt Phosphide (Co/Co2 P) Nanoparticles Supported on Nickel Foam
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Date
2016
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ACS Energy Letters
Abstract
We report a simple, facile, and safe route for preparation of cobalt–cobalt phosphide (Co/Co2P) nanoparticles and demonstrate their application as efficient low-cost catalysts for electrochemical water splitting. The catalyst achieves good performance in catalyzing both the cathode and anode half-cell water-splitting reactions in 1.0 M KOH and the hydrogen evolution reaction in an acidic electrolyte, 0.5 M H2SO4. For the oxygen evolution reaction in 1.0 M KOH, a current of 10 mA cm–2 was attained at 0.39 V overpotential on a glassy carbon electrode, while an overpotential of 0.19 V was attained at 50 mA cm–2 when the catalyst was supported on nickel foam.
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Masa, J., Barwe, S., Andronescu, C., Sinev, I., Ruff, A., Jayaramulu, K., ... & Schuhmann, W. (2016). Low overpotential water splitting using cobalt–cobalt phosphide nanoparticles supported on nickel foam. ACS Energy Letters, 1(6), 1192-1198.https://doi.org/10.1021/acsenergylett.6b00532