文献类型：期刊文献

英文题名：Facile synthesis and efficient electrochemical water splitting of bifunctional nanostructured Ni-based layered double hydroxide/sulfide composite

作者：Zhao, Lei[1];Guo, Zhengang[2,3];Liu, Zhifeng[2,3]

第一作者：赵磊

通讯作者：Liu, ZF[1];Liu, ZF[2]

机构：[1]Xinxiang Univ, Sch Civil Engn & Architecture, Xinxiang 453003, Peoples R China;[2]Tianjin Chengjian Univ, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China;[3]Tianjin Chengjian Univ, Tianjin Key Lab Bldg Green Funct Mat, Tianjin 300384, Peoples R China

第一机构：新乡学院土木工程与建筑学院

通讯机构：[1]corresponding author), Tianjin Chengjian Univ, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China;[2]corresponding author), Tianjin Chengjian Univ, Tianjin Key Lab Bldg Green Funct Mat, Tianjin 300384, Peoples R China.

年份：2022

卷号：910

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20221611977887);Scopus(收录号：2-s2.0-85128168531);WOS:【SCI-EXPANDED(收录号:WOS:000796930600002)】；

基金：Acknowledgements The authors gratefully acknowledge financial support from Tianjin Enterprise Science and Technology commissioner Project (No. 20YDTPJC00400) and National Natural Science Foundation of China (No. 52073200) .

语种：英文

外文关键词：Ni-Al layered double hydroxide; Electrocatalyst; Overall water splitting; Ni3S2

摘要：The development of efficient, stable and low-cost bifunctional electrocatalyst for water splitting is of great practical significance for the industrial application of hydrogen production. In this paper, a well-aligned columnar nickel sulfide and NiAl layered double hydroxides composite (NiAl-LDH/Ni3S2) supported on Nifoam substrate was successfully designed and prepared by successive hydrothermal processes. Ni3S2 nanorod arrays attached to Ni-foam could provide large open space and short ions diffusion path, and NiAlLDH provides large contact area with electrolyte, thus enabling fast and reversible redox process, which together could promote electrocatalytic activity. Accordingly, the NiAl-LDH/Ni3S2/NF electrode shows excellent HER and OER performance, in which the low overpotentials of 53.6, 90.2 and 209.2 mV are needed to drive the current density of 10, 20 and 100 mA/cm(2) for HER, and similarly for OER, it needs 350.4 mV low overvoltage to reach 100 mA/cm2. In the self-assembled device, the overall water splitting reaction can be driven at a cell voltage of 1.56 V when NiAl-LDH/Ni3S2/NF electrode used as cathode and anode, to achieve the current density of 10 mA/cm(2), and the loss voltage is only 16.5 mV within 10 h, showing the excellent stability. The well-constructed NiAl-LDH/Ni3S2/NF is a promising material in the area of electrocatalytic water splitting, which is of practical significance to realize the industrial development of hydrogen production. (C)& nbsp;2022 Elsevier B.V. All rights reserved.