Low-Cost Nickel-Based Electrocatalyst

  • Author: ChemNanoMat
  • Published Date: 19 May 2017
  • Source / Publisher: ChemNanoMat/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Low-Cost Nickel-Based Electrocatalyst

Electrocatalytic biomass valorization using renewable energy is a promising way to produce sustainable and nonfossil-based carbon products. The oxidative upgrading of biomass can be integrated with H2 production in aqueous media.

Yujie Sun, Utah State University, Logan, USA, and colleagues have used low-cost nickel phosphide particles coated on nickel foam (Ni2P/Ni/NF) as bifunctional electrocatalysts for H2 evolution and for the oxidation of furfural to 2-furoic acid under alkaline conditions. Furfural oxidation to 2-furoic acid (pictured) is more favorable thermodynamically and kinetically than water oxidation on Ni2P/Ni/NF. When Ni2P/Ni/NF acted as the electrocatalysts for both the anode and cathode, nearly unity Faradaic efficiencies for both H2 evolution and furfural oxidation were obtained.

Such an integrated electrolysis strategy requires a smaller voltage input while producing two valuable products in contrast to pure water splitting, where the produced O2 has a low market value. This approach may lead to the development of new catalytic systems to extend the coupling of H2 evolution with many other valuable organic oxidation reactions.


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