State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, Jilin (China).
Angew Chem Int Ed Engl. 2014 Nov 17;53(47):12855-9. doi: 10.1002/anie.201406848. Epub 2014 Sep 24.
Iron is the cheapest and one of the most abundant transition metals. Natural [FeFe]-hydrogenases exhibit remarkably high activity in hydrogen evolution, but they suffer from high oxygen sensitivity and difficulty in scale-up. Herein, an FeP nanowire array was developed on Ti plate (FeP NA/Ti) from its β-FeOOH NA/Ti precursor through a low-temperature phosphidation reaction. When applied as self-supported 3D hydrogen evolution cathode, the FeP NA/Ti electrode shows exceptionally high catalytic activity and good durability, and it only requires overpotentials of 55 and 127 mV to afford current densities of 10 and 100 mA cm(2) , respectively. The excellent electrocatalytic performance is promising for applications as non-noble-metal HER catalyst with a high performance-price ratio in electrochemical water splitting for large-scale hydrogen fuel production.
铁是最便宜和最丰富的过渡金属之一。天然 [FeFe]-氢化酶在析氢反应中表现出极高的活性，但它们对氧气敏感，且难以规模化。在此，通过低温磷化反应，从其β-FeOOH NA/Ti 前体在 Ti 板上开发了 FeP 纳米线阵列（FeP NA/Ti）。当用作自支撑的 3D 析氢阴极时，FeP NA/Ti 电极表现出异常高的催化活性和良好的耐久性，仅需 55 和 127 mV 的过电势即可分别提供 10 和 100 mA cm(-2) 的电流密度。优异的电催化性能有望作为非贵金属 HER 催化剂在大规模制氢的电化学水分解中得到应用，具有高性价比。
