Please use this identifier to cite or link to this item:
|Title:||An electron deficiency strategy for enhancing hydrogen evolution on CoP nano-electrocatalysts||Authors:||Liao, Hanbin
Fisher, Adrian C.
Xu, Jason Zhichuan
|Keywords:||Engineering::Materials||Issue Date:||2018||Source:||Liao, H., Sun, Y., Dai, C., Du, Y., Xi, S., Liu, F., . . . Xu, J. Z. (2018). An electron deficiency strategy for enhancing hydrogen evolution on CoP nano-electrocatalysts. Nano Energy, 50, 273-280. doi:10.1016/j.nanoen.2018.05.060||Journal:||Nano Energy||Abstract:||Optimizing the hydrogen adsorption on electrodes is one of the most effective strategies to promote the hydrogen evolution reaction (HER). In recent years, cobalt phosphides (CoP) have been identified as a promising catalyst for HER in acid. However, the hydrogen adsorption on CoP is strong and a considerable overpotential has to be applied to enable HER. Here, we report a strategy to weaken the hydrogen adsorption on CoP through an electron deficiency in CoP induced by Au@CoP core/shell structure. A weakened hydrogen adsorption is confirmed by the density functional theory (DFT) calculation. Au@CoP gave an overpotential (η) of 160 mV at the current density of 1 mA cm−2CoP, which is about 50 mV less than pure CoP. It also exhibited a turn-over frequency (TOF) value of 0.68 s−1 per active site at η = 150 mV, which is more than 4 times higher than CoP. The strategy reported here holds potential to be extended to other electrodes for optimizing their hydrogen adsorption for HER.||URI:||https://hdl.handle.net/10356/139531||ISSN:||2211-2855||DOI:||10.1016/j.nanoen.2018.05.060||Rights:||© 2018 Elsevier Ltd. All rights reserved.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||MSE Journal Articles|
Updated on Mar 10, 2021
Updated on Mar 5, 2021
Updated on May 16, 2021
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.