The small organic molecule electro-oxidation (OMEO) and the hydrogen evolution (HER) are two important half-reactions in direct alcohol fuel cells (DAFCs) and water electrolyzers, respectively, whose performance is largely hindered by the low activity and poor stability of electrocatalysts. Herein, we demonstrate that a simple phosphorization treatment of commercially available palladium-nickel (PdNi) catalysts results in multifunctional ternary palladium nickel phosphide (PdNiP) catalysts, which exhibit substantially enhanced electrocatalytic activity and stability for HER and OMEO of a number of molecules including formic acid, methanol, ethanol, and ethylene glycol, in acidic and/or alkaline media. The improved performance results from the modification of electronic structure of palladium and nickel by the introduced phosphor and the enhanced corrosion resistance of PdNiP. The simple phosphorization approach reported here allows for mass production of highly-active OMEO and HER electrocatalysts, holding substantial promise for their large-scale application in direct alcohol fuel cells and water electrolyzers.

在直接酒精燃料电池（DAFC）和水电解槽中，有机小分子氧化（OMEO）和析氢（HER）是两个重要的半反应，它们的性能在很大程度上受到活性低和稳定性差的困扰。电催化剂。在本文中，我们证明了对市售的钯镍（PdNi）催化剂进行简单的磷化处理会导致多功能三元磷化钯镍（PdNiP）催化剂，该催化剂对包括甲酸，乙二胺和乙二胺在内的许多分子均表现出显着增强的电催化活性和稳定性。酸性和/或碱性介质中的酸，甲醇，乙醇和乙二醇。性能的改善归因于所引入的磷光体对钯和镍的电子结构的改性，以及PdNiP的增强的耐腐蚀性。此处报道的简单的磷化方法可实现高活性OMEO和HER电催化剂的批量生产，为将其大规模应用于直接酒精燃料电池和水电解槽具有广阔的前景。