文献类型：期刊文献

英文题名：Facile fabrication of amorphous NiFeP nanosheets to promote urea oxidation reaction for energy-saving hydrogen production

作者：Cao, Junhui[1];Wang, Guanglong[1];Hou, Shusen[1];Yu, Weixin[1];Yang, Zhijun[1];Wu, Yihui[2,3]

第一作者：Cao, Junhui

通讯作者：Hou, SS[1];Wu, YH[2];Wu, YH[3]

机构：[1]Xinxiang Univ, Sch Mech & Elect Engn, Xinxiang 453003, Peoples R China;[2]Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China;[3]Foshan Southern China Inst New Mat, Foshan 528247, Peoples R China

第一机构：新乡学院机电工程学院

通讯机构：[1]corresponding author), Xinxiang Univ, Sch Mech & Elect Engn, Xinxiang 453003, Peoples R China;[2]corresponding author), Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China;[3]corresponding author), Foshan Southern China Inst New Mat, Foshan 528247, Peoples R China.|[1107111]新乡学院机电工程学院;[11071]新乡学院;

年份：2023

卷号：58

期号：41

起止页码：16019-16032

外文期刊名：JOURNAL OF MATERIALS SCIENCE

收录：;EI(收录号：20234414990197);Scopus(收录号：2-s2.0-85175210432);WOS:【SCI-EXPANDED(收录号:WOS:001094728000002)】；

基金：We acknowledge Prof & Head, School of Mechanical and Electrical Engineering, Xinxiang University for supporting us by providing lab and technical facilities.

语种：英文

外文关键词：Activation energy - Electrolysis - Electronic structure - Energy conservation - Hydrogen production - Iron compounds - Metabolism - Nanosheets - Nickel - Phosphorus - Potassium hydroxide - Urea

摘要：Although Urea oxidation reaction (UOR) with favorable thermodynamic potential has been well-acknowledged as a feasible alternative to slow oxygen evolution reaction for hydrogen production through water splitting, but the shortage of low-cost and high efficiency electrocatalysts restricts its practical development. In this research, a free-standing nickel-iron-phosphide (NiFeP) nanosheets electrocatalysts on nickel foam is synthesized by electrodeposition method. The presence of phosphide (P) causes nickel-iron (NiFe) to evolve from crystalline to amorphous structures. The NiFeP electrocatalysts with nanosheets structure exhibit reliable electrocatalytic activities toward UOR with small potential of 1.397 V at 10 mA cm-2, low Tafel slope of 60.1 mV dec-1 and outstanding catalytic stability in 1.0 M KOH with 0.33 M urea solution. More impressively, the electrochemical activation energy (Ea) of UOR for the NiFeP electrocatalyst (35.6 kJ mol-1) is much lower than that of NiFe electrocatalyst (52.1 kJ mol-1). The phosphorus doping triggers the electronic structure of Ni and Fe site reconstruction, which is conducive to accelerating charge and mass transport, and then contributes to the enhanced electrocatalytic performance. Furthermore, the formation of amorphous structure and nanosheets structure by the incorporation of phosphorus contributes to the improved intrinsic activity of NiFeP for UOR.