Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/139531
Title: An electron deficiency strategy for enhancing hydrogen evolution on CoP nano-electrocatalysts
Authors: Liao, Hanbin
Sun, Yuanmiao
Dai, Chencheng
Du, Yonghua
Xi, Shibo
Liu, Fei
Yu, Linghui
Yang, Ziyu
Hou, Yanglong
Fisher, Adrian C.
Li, Shuzhou
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

SCOPUSTM   
Citations 10

37
Updated on Mar 10, 2021

PublonsTM
Citations 10

34
Updated on Mar 5, 2021

Page view(s)

54
Updated on May 16, 2021

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.