Journal
CHEMISTRYSELECT
Volume 4, Issue 15, Pages 4499-4505Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201900865
Keywords
Water splitting; MnCo2S4; Ni foam; stability; Electrocatalysis
Categories
Funding
- National Science Foundation of China [21802126, 21806147]
- Science Foundation of Shanxi Province [201801D221083]
Ask authors/readers for more resources
The exploitation and use of efficient and inexpensive electrochemical catalysts accelerate overall water splitting, which rapidly produces oxygen and hydrogen. In this work, MnCo2S4 is grown on nickel foam by a two-step method, hydrothermal and sulfuration method. Experiments have shown that the resulting MnCo2S4/NF exhibits a low overpotential of 310 mV to achieve a current density of 50 mA cm(-2) in 1.0 M potassium hydroxide for oxygen evolution reaction (OER). In addition, the MnCo2S4/NF exhibits a low overpotential of only 167 mV at 10 mA cm(-2) for hydrogen evolution reaction (HER). Furthermore, MnCo2S4/NF is acted as a bifunctional water splitting catalyst, and in 1.0 M potassium hydroxide, in order to maintain a current of 10 mA cm(-2), a low battery voltage of 1.61 V is required. The nanostructure, which provides a large specific surface area, which in turn increases the reactive sites, facilitates contact of large areas of water with the catalyst, and rapid transfer of electrons. At the same time, through a series of characterization (XRD, SEM and XPS), it is proved that the catalyst is efficient and stable under alkaline condition.
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