In-situ self-reconstruction of Ni-Fe-Al hybrid phosphides nanosheet arrays enables efficient oxygen evolution in alkaline

Wu, Yanyan1; Xie, Zijuan2,3; Li, Ying1; Lv, Zhe1; Xu, Lingling4; Wei, Bo1

2021-07-16

10.1016/j.ijhydene.2021.05.060

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   影响因子和分区

0360-3199

1879-3487

Developing efficient oxygen evolution reaction (OER) electrocatalysts with earth-abundant elements is very important for sustainable H-2 generation via electrochemical water splitting. Here we design a crystalline-amorphous Ni-Fe-Al hybrid phosphides nanosheet arrays grown on NiFe foam for efficient OER application. Dynamic surface reorganization of phosphides at anodic/cathodic polarizations is probed by in situ Raman spectroscopy. The reconstructed amorphous Ni(Fe)OOH species are determined as the active phases that facilitate the OER process. This unique electrode shows highly catalytic activity toward water oxidation, achieving the current densities of 10 and 100 mA cm(-2) at 181 and 214 mV in 1 M KOH, respectively. Meanwhile, it also exhibits excellent stability at a large current density of 100 mA cm(-2) for over 60 h. This work reveals the dynamic structural transformation of pre-catalyst in realistic conditions and highlights the important role of oxyhydroxides as real reactive species in OER process with high activity. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Electrochemical water splitting Oxygen evolution reaction Nanosheet arrays In situ Raman spectroscopy Self-reconstruction

SCI ; EI

英语

其他

National Natural Science Foundation of China[21773048] ; Sichuan Science and Technology Program[2021YFSY0022]

Chemistry ; Electrochemistry ; Energy & Fuels

Chemistry, Physical ; Electrochemistry ; Energy & Fuels

WOS:000672597200001

PERGAMON-ELSEVIER SCIENCE LTD

20212710592109

Aluminum compounds ; Binary alloys ; Catalyst activity ; Electrocatalysts ; Oxygen ; Phosphorus compounds ; Potassium hydroxide ; Raman spectroscopy

Nanotechnology:761 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Solid State Physics:933

ENGINEERING

Web of Science

1.Harbin Inst Technol, Sch Phys, 92 West Dazhi Str, Harbin 150001, Heilongjiang, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
4.Harbin Normal Univ, Sch Phys & Elect Engn, Harbin 150025, Peoples R China

Wu, Yanyan,Xie, Zijuan,Li, Ying,et al. In-situ self-reconstruction of Ni-Fe-Al hybrid phosphides nanosheet arrays enables efficient oxygen evolution in alkaline[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2021,46(49):25070-25080.

Wu, Yanyan,Xie, Zijuan,Li, Ying,Lv, Zhe,Xu, Lingling,&Wei, Bo.(2021).In-situ self-reconstruction of Ni-Fe-Al hybrid phosphides nanosheet arrays enables efficient oxygen evolution in alkaline.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,46(49),25070-25080.

Wu, Yanyan,et al."In-situ self-reconstruction of Ni-Fe-Al hybrid phosphides nanosheet arrays enables efficient oxygen evolution in alkaline".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 46.49(2021):25070-25080.