Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/150365
Title: | Elucidating the sources of activity and stability of FeP electrocatalyst for hydrogen evolution reactions in acidic and alkaline media | Authors: | Zhao, Xin Zhang, Zheng Cao, Xun Hu, Jun Wu, Xinghua Ng, Andrew Yun Ru Lu, Guo-Ping Chen, Zhong |
Keywords: | Engineering::Materials | Issue Date: | 2019 | Source: | Zhao, X., Zhang, Z., Cao, X., Hu, J., Wu, X., Ng, A. Y. R., Lu, G. & Chen, Z. (2019). Elucidating the sources of activity and stability of FeP electrocatalyst for hydrogen evolution reactions in acidic and alkaline media. Applied Catalysis B: Environmental, 260, 118156-. https://dx.doi.org/10.1016/j.apcatb.2019.118156 | Project: | RG15/16 RG16/18 SINBERISE |
Journal: | Applied Catalysis B: Environmental | Abstract: | In this study, we conduct comprehensive experimental and theoretical investigations on the hydrogen evolution reaction (HER) preformation of FeP electrode in acidic and alkaline solutions. Theoretically, bulk Fe-O bond is unfavorable, but surface Fe-O bond is favorable and plays a negative role for HER. The presence of oxygen bonds (native or formed during reaction) is the root source of the reduced HER activity. Surface treatment in 37% HCl solution removes the oxide layer and significantly improves the HER performance, especially in alkaline solution. After etching, the overpotentials in 0.5 M H2SO4 are 79 and 95 mV at 10 and 20 mA cm−2, respectively. The ones in 1 M KOH are 95 and 102 mV at 10 and 20 mA cm−2, respectively. Long-term instability in alkaline solution is caused by the presence of oxygen in the electrolyte. Good stability can be realized by removing oxygen from the solution. | URI: | https://hdl.handle.net/10356/150365 | ISSN: | 0926-3373 | DOI: | 10.1016/j.apcatb.2019.118156 | Schools: | School of Materials Science and Engineering School of Physical and Mathematical Sciences |
Rights: | © 2019 Elsevier B.V. All rights reserved. This paper was published in Applied Catalysis B: Environmental and is made available with permission of Elsevier B.V. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | MSE Journal Articles SPMS Journal Articles |
Files in This Item:
SCOPUSTM
Citations
5
77
Updated on Mar 23, 2024
Web of ScienceTM
Citations
5
74
Updated on Oct 28, 2023
Page view(s)
268
Updated on Mar 27, 2024
Download(s) 50
152
Updated on Mar 27, 2024
Google ScholarTM
Check
Altmetric
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.