Zhai Haoying, Gao Taotao, Qi Ting, Zhang Yajie, Zeng Guangfeng, Xiao Dan
College of Chemistry and Chemical Engineering, Neijiang Normal University, 705 Dongtong Road, Neijiang, 641112, P.R. China.
College of Chemical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P.R. China.
Chem Asian J. 2017 Oct 18;12(20):2694-2702. doi: 10.1002/asia.201700905. Epub 2017 Sep 21.
Iron-cobalt phosphomolybdate (FeCoPM ) nanoparticles, which are highly efficient catalytic materials for the oxygen evolution reaction (OER), were fabricated through a coprecipitation route. Compared with iron-cobalt hydroxide and state-of-the-art RuO electrocatalysts, the as-prepared FeCoPM sample exhibited robust OER catalytic activity with a low overpotential of 258 mV at a current density of 10 mA cm and a small Tafel slope of 33 mV dec . Moreover, the as-synthesized sample presented preferable stability and after 10 h at 1.52 V the current density degraded by merely 8.3 %. This is ascribed to the high electrochemical stability and small porous structure of FeCoPM , which provide effective electron transmission and improve the catalytic performance for OER in alkaline media.
通过共沉淀法制备了铁钴磷钼酸盐（FeCoPM）纳米颗粒，其是用于析氧反应（OER）的高效催化材料。与氢氧化铁钴和最先进的RuO电催化剂相比，所制备的FeCoPM样品表现出强大的OER催化活性，在电流密度为10 mA cm时过电位低至258 mV，塔菲尔斜率小至33 mV dec。此外，合成的样品具有较好的稳定性，在1.52 V下经过10 h后电流密度仅下降了8.3%。这归因于FeCoPM的高电化学稳定性和小孔隙结构，其提供了有效的电子传输并提高了在碱性介质中OER的催化性能。
