Tuning electronic property and surface reconstruction of amorphous iron borides via W-P co-doping for highly efficient oxygen evolution

Chen，Zhijie1; Zheng，Renji2; Graś，Małgorzata3; Wei，Wei1; Lota，Grzegorz3; Chen，Hong2; Ni，Bing Jie1

2021-07-05

10.1016/j.apcatb.2021.120037

APPLIED CATALYSIS B-ENVIRONMENTAL   影响因子和分区

0926-3373

Designing cost-effective oxygen evolution reaction (OER) electrocatalysts is essential for sustainable water splitting. Recently, amorphous transition metal borides (TMBs) as OER pre-catalysts have acquired growing attention due to their favorable characteristics such as high conductivity, compositional and structural flexibility. Nevertheless, rational design of boride-based OER pre-catalysts remains an ongoing challenge. Herein, an efficient pre-catalyst derived from FeB with accelerated surface reconstruction and regulated intrinsic activity of evolved FeOOH is obtained by W and P co-doping. The obtained catalyst demonstrates an excellent OER activity with a low overpotential of 209 mV at a current density of 10 mA cm, and good stability in alkaline electrolyte, which surpasses most of boride-based OER catalysts. Specifically, the anion etching facilitates the surface reconstruction and accelerates the mass/charge transfer. Density functional theory calculations suggest W doping can enhance intrinsic catalytic activity via optimizing the adsorption free energy of reaction intermediates and improving the conductivity. Additionally, the hierarchical structure and amorphous feature also benefit the OER process. This study provides a fundamental insight into the correlation between surface structure and catalytic activity, and a powerful strategy to construct efficient OER pre-catalysts.

Amorphous phase Anion etching Borides Oxygen evolution reaction Surface reconstruction

SCI ; EI

英语

ESI高被引

通讯

WOS:000627348400001

20210909997972

Borides ; Cost effectiveness ; Density functional theory ; Electrocatalysts ; Electrolytes ; Electronic properties ; Etching ; Free energy ; Iron ; Iron compounds ; Oxygen ; Oxygen evolution reaction ; Reaction intermediates ; Surface reconstruction ; Water conservation

Water Resources:444 ; Iron:545.1 ; Thermodynamics:641.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Industrial Economics:911.2 ; Probability Theory:922.1

CHEMISTRY

2-s2.0-85101562386

Scopus

1.Centre for Technology in Water and Wastewater,School of Civil and Environmental Engineering,University of Technology Sydney,2007,Australia
2.State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control,Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials (SKLISEM),School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Institute of Chemistry and Technical Electrochemistry,Poznan University of Technology,Poznan,Berdychowo 4,60-965,Poland

Chen，Zhijie,Zheng，Renji,Graś，Małgorzata,et al. Tuning electronic property and surface reconstruction of amorphous iron borides via W-P co-doping for highly efficient oxygen evolution[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2021,288.

Chen，Zhijie.,Zheng，Renji.,Graś，Małgorzata.,Wei，Wei.,Lota，Grzegorz.,...&Ni，Bing Jie.(2021).Tuning electronic property and surface reconstruction of amorphous iron borides via W-P co-doping for highly efficient oxygen evolution.APPLIED CATALYSIS B-ENVIRONMENTAL,288.

Chen，Zhijie,et al."Tuning electronic property and surface reconstruction of amorphous iron borides via W-P co-doping for highly efficient oxygen evolution".APPLIED CATALYSIS B-ENVIRONMENTAL 288(2021).