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Realizing optimal hydrogen evolution reaction properties via tuning phosphorous and transition metal interactions

Jiang, H; Zhao, S; Li, W; Neville, TP; Akpinar, I; Shearing, PR; Brett, DJL; (2020) Realizing optimal hydrogen evolution reaction properties via tuning phosphorous and transition metal interactions. Green Energy and Environment , 5 (4) pp. 506-512. 10.1016/j.gee.2020.07.009. Green open access

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Abstract

Hydrogen is one of the most attractive renewables for future energy application, therefore it is vital to develop cost-effective and highly-efficient electrocatalysts for the hydrogen evolution reaction (HER) to promote the generation of hydrogen from mild methods. In this work, Co–Mo phosphide nanosheets with the adjustable ratio of Co and Mo were fabricated on carbon cloth by a facile hydrothermal-annealing method. Owing to the unique nanostructures, abundant active surfaces and small resistance were achieved. Excellent electrocatalytic performances are obtained, such as the small overpotential of ∼67.3 mV to realize a current density of 10 mA cm−2 and a Tafel slope of 69.9 mV dec−1. Rapid recovery of the current response under multistep chronoamperometry is realized and excellent stability retained after the CV test for 2000 cycles. The change of electronic states of different elements was carefully studied which suggested the optimal electrochemical performance can be realized by tuning phosphorous and metal interactions.

Type: Article
Title: Realizing optimal hydrogen evolution reaction properties via tuning phosphorous and transition metal interactions
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.gee.2020.07.009
Publisher version: http://dx.doi.org/10.1016/j.gee.2020.07.009
Language: English
Additional information: © 2020, Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Keywords: Co-Mo Phosphide; Nanosheets; Hydrogen evolution reaction; Metal-phosphorous interactions
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10121871
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