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Novel Noble-Metal-Free Electrocatalyst for Oxygen Evolution Reaction in Acidic and Alkaline Media

机译：新型无贵金属电催化剂，可在酸性和碱性介质中进行氧气释放反应

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摘要

This study focuses on the feasibility of using TMTiP (where TM is a 3d transition metal or a mixture of 3d transition metals, Cr, Mn, Fe, Co, and Ni; TiP denotes titanium phosphide) as the electrode material for the oxygen evolution reaction (OER) by systematic modification to the atomic ratio of the constituent metals. The catalytic activity of the electrode materials is expected to be governed by the d electrons of the transition metals; the electrical conductivity is provided by TiP even under highly acidic conditions. The OER activity followed a "volcano plot" as the TM was changed from Cr to Ni and assumed the maximum value for the composition cobalt titanium phosphide (CoTiP). The CoTiP electrode also exhibited excellent corrosion resistance and metallic conductivity (on the order of 10(-6) Omega m) over the pH range 0-14. The OER activity of CoTiP was comparable to that of Pt but inferior to that of state-of-the-art IrO2 and RuO2.
机译：这项研究集中于使用TMTiP（其中TM是3d过渡金属或3d过渡金属的混合物，Cr，Mn，Fe，Co和Ni; TiP表示磷化钛）作为氧释放反应的电极材料的可行性。 （OER）通过系统修改组成金属的原子比来实现。预期电极材料的催化活性受过渡金属的d电子支配。 TiP甚至在高酸性条件下也能提供导电性。当TM由Cr变为Ni时，OER活性遵循“火山图”，并假定了磷化钴钛（CoTiP）的最大值。 CoTiP电极在0-14的pH范围内，还具有出色的耐腐蚀性和金属导电性（约为10（-6）Ωm）。 CoTiP的OER活性与Pt相当，但不如最新的IrO2和RuO2。

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