Low Overpotential Water Splitting Using Cobalt–Cobalt Phosphide Nanoparticles 
Supported on Nickel Foam

Masa, Justus; Barwe, Stefan; Andronescu, Corina; Sinev, Ilya; Ruff, Adrian; Jayaramulu, Kolleboyina; Elumeeva, Karina; Konkena, Bharathi; Roldan Cuenya, Beatriz; Schuhmann, Wolfgang

doi:10.1021/acsenergylett.6b00532

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Low Overpotential Water Splitting Using Cobalt–Cobalt Phosphide Nanoparticles Supported on Nickel Foam

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Masa, J., Barwe, S., Andronescu, C., Sinev, I., Ruff, A., Jayaramulu, K., Elumeeva, K., Konkena, B., Roldan Cuenya, B., & Schuhmann, W. (2016). Low Overpotential Water Splitting Using Cobalt–Cobalt Phosphide Nanoparticles Supported on Nickel Foam. ACS Energy Letters, 1(6), 1192-1198. doi:10.1021/acsenergylett.6b00532.

引用: https://hdl.handle.net/21.11116/0000-0006-BBF2-6

要旨

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.