Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 22, Pages 18332-18340Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b03711
Keywords
Nickel-iron phosphate; Filmlike structure; Oxygen evolution reaction; Hydrothermal synthesis; Long-term stability
Categories
Funding
- National Natural Science Foundation of China [21571005]
- High School Leading talent incubation programme of Anhui Province [gxbjZD2016010]
- Recruitment Program for Leading Talent Team of Anhui Province
Ask authors/readers for more resources
Nickel-iron phosphate film with a porous surface formed by ultrathin nanotubes was successfully grown on Ni foam (NF) through a simple hydrothermal route at 150 degrees C for 90 min in the presence of HCl and urea with proper amounts, employing Fe(NO3)(3)center dot 9H(2)O as the iron source, Na2HPO4 as the PO43- source, and NF as the nickel source and the substrate. The as-obtained product (labeled as NiFe-Pi/NF) was characterized by field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), X-ray energy dispersive spectroscopy (EDS), EDS mapping, X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR) spectroscopy, and nitrogen adsorption-desorption isotherms. Experiments showed that the as-obtained NiFe-Pi/NF presented excellent OER catalytic activity in a 1 M KOH solution. To deliver a current density of 10 mA cm(-2), the present catalyst only required the overpotential of 206 mV with the Tafel slope of 31 mV dec(-1). More importantly, the catalytic activity of the as-obtained NiFe-Pi/NF catalyst hardly decreased after continuously catalyzing 300 h at the current density of 20 mA cm(-2), displaying excellent long-term stability. Compared with commercial RuO2, the present NiFe-Pi/NF catalyst possessed better catalytic activity, indicating that the as-obtained NiFe-Pi/NF catalyst can be used as a potential OER catalyst in practical application.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available