Abstract
The cobalt-seleno-based coordination complex, [Co{(SePiPr2)2N}2], is reported with respect to its catalytic activity in oxygen evolution and hydrogen evolution reactions (OER and HER, respectively) in alkaline solutions. An overpotential of 320 and 630 mV was required to achieve 10 mA cm-2 for OER and HER, respectively. The overpotential for OER of this CoSe4-containing complex is one of the lowest that has been observed until now for molecular cobalt(II) systems, under the reported conditions. In addition, this cobalt-seleno-based complex exhibits a high mass activity (14.15 A g-1) and a much higher turn-over frequency (TOF) value (0.032 s-1) at an overpotential of 300 mV. These observations confirm analogous ones already reported in the literature pertaining to the potential of molecular cobalt-seleno systems as efficient OER electrocatalysts.
Recommended Citation
I. M. Abdullahi et al., "A Molecular Tetrahedral Cobalt-Seleno-Based Complex as an Efficient Electrocatalyst for Water Splitting," Molecules, vol. 26, no. 4, MDPI, Feb 2021.
The definitive version is available at https://doi.org/10.3390/molecules26040945
Department(s)
Chemistry
Keywords and Phrases
Cobalt Complex; Electrocatalysis; Hydrogen Evolution; Oxygen Evolution; Water Splitting
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2021 The Authors, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
Publication Date
10 Feb 2021
Comments
This research was funded by National Science Foundation, DMR 1710313 and American Chemical Society Petroleum Research Fund 54793-ND.