标题：Effects of iron doping on the hydrogen evolution reaction performance of self-supported nickel selenides
作者：Zhang, Changqin; Bai, Yanwen; Zhang, Yi; Li, Changxing; Zhou, Shuai
作者机构：[Zhang, Changqin; Bai, Yanwen] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Shandong, Peoples R China.; [Zhang, Changqin; Zhang, Yi; Li, Changxi 更多
通讯作者地址：[Zhang, CQ]Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Shandong, Peoples R China.
来源：RESULTS IN PHYSICS
关键词：Iron doping; Nickel selenides; Hydrogen evolution reaction;; Overpotential; Stability measurement
摘要：In this paper, we prepared self-supported three-dimensional ( 3D) porous NiSe2 nanowrinkles with and without iron doping on Ni-Fe foam and Ni foam respectively through an inert-atmosphere selenization method, and investigated their electrocatalytic performance for hydrogen evolution reaction ( HER) in alkaline solutions. The overpotential to achieve 10 mA cm(-2) for HER on the selenized Ni-Fe foam was 181 mV, which was about 35 mV lower than that on the selenized Ni foam. Meanwhile, the iron doping NiSe2 catalyst anchored on the Ni-Fe foam had desirable stability for HER, and the overpotential to achieve 10 mA cm(-2) showed no obvious increase or even slight decrease after the stability measurement of 1 h. This work provides new insights for designing highly efficient non-noble transition metal-based electrocatalysts with excellent electrocatalytic performance in H-2 production.