文献类型：期刊文献

英文题名：1D/1D Hierarchical Nickel Sulfide/Phosphide Nanostructures for Electrocatalytic Water Oxidation

作者：Fu, Huai Qin[1];Zhang, Le[1];Wang, Chong Wu[1];Zheng, Li Rong[2];Liu, Peng Fei[1];Yang, Hua Gui[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

年份：2018

卷号：3

期号：9

起止页码：2021

外文期刊名：ACS ENERGY LETTERS

收录：;EI(收录号：20183805837575);WOS:【SCI-EXPANDED(收录号:WOS:000445052900001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (21573068), National Natural Science Funds for Distinguished Young Scholar (51725201), Fundamental Research Funds for the Central Universities (222201718002), and Program of Shanghai Subject Chief Scientist (15XD1501300). This work has also benefited from the 1W1B beamline of the Beijing Synchrotron Radiation Facility (BSRF).

语种：英文

外文关键词：Carbon dioxide - Solar energy - Electron transport properties - Nanorods - Reaction kinetics - Pollution control - Sulfur compounds

摘要：The sluggish kinetics of the oxygen evolution reaction (OER) limits the efficiencies of solar-powered electrical-conversion applications, such as water splitting and carbon dioxide reduction. Herein, we rationally designed a metallic nanostructured nickel sulfide/phosphide hybrid (NiSxPy) as an efficient precatalyst for OER, with one-dimensional (1D) nanowires grown on 1D nanorods. The resulting metallic hybrid NiSxPy catalyst can accelerate the electron transfer process and expose abundant in situ-generated NiOOH species during OER (NiSxPy-O). Therefore, NiSxPy-O exhibits a low overpotential of 192 mV (with 100% iR compensation; this value should be 200 mV without compensation) to achieve an O-2 partial current density (j(O2)) of 10 mA cm(-2) and a robust stability over 135 h without obvious degradation. Moreover, a j(O2) of 10 mA cm(-2) at an overpotential of 315 mV (with 100% iR compensation; this value should be 365 mV without compensation) is attained in near-neutral conditions. These results may pave a new way to design metallic precatalysts with 1D/1D hierarchical nanostructures to boost the OER.