首页 > 新闻公告 > CEM研究国际动态 CEM研究国际动态
Novel porous molybdenum tungsten phosphide hybrid nanosheets on carbon cloth for efficient hydrogen evolution

Nanostructural modification and chemical composition tuning are paramount to developing effective non-noble hydrogen evolution reaction (HER) catalysts for water splitting. Herein, we report a novel excellent porous molybdenum tungsten phosphide (Mo–W–P) hybrid nanosheet catalyst for hydrogen evolution, which is synthesized via in situ phosphidation of molybdenum tungsten oxide (Mo–W–O) hybrid nanowires grown on carbon cloth. The three-dimensional (3D) hierarchical hybrid electrocatalyst exhibits impressively high electrocatalytic activity with a low overpotential of 138 mV required to achieve a high current density of 100 mA cm-2 and a small Tafel slope of 52 mV dec-1 in 0.5 M H2SO4, which are significantly higher than those of single MoP nanosheets and WP2 nanorods. Such an outstanding performance of the Mo–W–P hybrid electrocatalyst is attributed to the 3D conductive scaffolds, porous nanosheet structure, and strong synergistic effect of W and Mo atoms in Mo–W–P, making it a very promising catalyst for hydrogen production. Our findings demonstrate that careful control over the morphology and composition of the electrocatalyst can achieve highly efficient hybrid electrocatalysts.

Energy Environ. Sci., 2016,9, 1468-1475
DOI: 10.1039/C5EE03801D

http://pubs.rsc.org/en/Content/ArticleLanding/2016/EE/C5EE03801D#!divAbstract

中文报道链接:
http://mp.weixin.qq.com/s?__biz=MzAwOTExNzg4Nw==&mid=2657560048&idx=6&sn=1063232f441f910ad1c9173a8037d16b&scene=1&srcid=0503PHQMgoYv1YI2swN41DaT#wechat_redirect

发布日期:2016/05/03 发布者: 点击数: