Zhang Cong, Gao Zhichao, Zhao Lei, Ai Jing, Li Nan, Li Xiaotian
Key Laboratory of Automobile Materials (Ministry of Education), School of Materials Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China.
Key Laboratory of Automobile Materials (Ministry of Education), School of Materials Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China.
J Colloid Interface Sci. 2020 Jun 1;569:68-75. doi: 10.1016/j.jcis.2020.02.070. Epub 2020 Feb 18.
There is a pressing demand to explore alternative to Pt-based electrocatalysts for hydrogen evolution reaction (HER) in water electrolysis. In this study, an iron phosphide catalyst with periodically ordered mesoporous structure (meso-FeP) was fabricated via a nanocasting method for the HER. The as-prepared meso-FeP exhibited high electrocatalytic activity, affording 10 mA·cm current density at small overpotentials of 114 mV and 136 mV with the maintenance of its catalytic activity for at least 22 h in 0.5 M HSO and 1.0 M KOH, respectively. The outstanding performance is attributed to the high specific surface area (209.4 m g) derived from ordered mesopores, which endows the catalyst with abundant electrochemically active sites and accessible mass transport pathway. This work provides an efficient strategy to prepare mesoporous phosphides as high-performance hydrogen evolution catalysts.
迫切需要探索用于水电解中析氢反应（HER）的铂基电催化剂的替代物。在本研究中，通过纳米铸造法制备了一种具有周期性有序介孔结构的磷化铁催化剂（介孔FeP）用于析氢反应。所制备的介孔FeP表现出高电催化活性，在114 mV和136 mV的小过电位下分别提供10 mA·cm的电流密度，并且在0.5 M HSO和1.0 M KOH中其催化活性分别保持至少22小时。优异的性能归因于由有序介孔产生的高比表面积（209.4 m g），这赋予催化剂丰富的电化学活性位点和可及的质量传输途径。这项工作提供了一种制备介孔磷化物作为高性能析氢催化剂的有效策略。
