Ultra-low amount Pt-doped Co2P/Ni2P on nickel foam as an efficient electrocatalyst for the hydrogen evolution reaction in an alkaline electrolyte
It is still a challenge to design an efficient and low-cost electrocatalyst for the hydrogen evolution reaction (HER) in an alkaline electrolyte. Herein, ultra-low amount Pt-doped Co2P/Ni2P on nickel foam (Pt/Co2P/Ni2P/NF) was facilely synthesized via an in situ controlled growth and used as an effi...
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Published in | Sustainable energy & fuels Vol. 5; no. 4; pp. 1059 - 1066 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
London
Royal Society of Chemistry
21.02.2021
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Subjects | |
Online Access | Get full text |
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Summary: | It is still a challenge to design an efficient and low-cost electrocatalyst for the hydrogen evolution reaction (HER) in an alkaline electrolyte. Herein, ultra-low amount Pt-doped Co2P/Ni2P on nickel foam (Pt/Co2P/Ni2P/NF) was facilely synthesized via an in situ controlled growth and used as an efficient electrocatalyst for electrolytic water splitting into hydrogen. Pt/Co2P/Ni2P/NF was achieved by a two-step procedure that was conducted by the hydrothermal approach to obtain the precursor, followed by a subsequent in situ phosphorization procedure. Due to the NF substrate being supermacroporous, more active sites of Pt/Co2P/Ni2P/NF could be exposed, improving electron transport and providing open-channels for the rapid release of H2. Pt/Co2P/Ni2P/NF exhibited remarkable electrocatalytic performance towards HER with an overpotential of 75 mV at 10 mA cm−2 in an alkaline electrolyte and a small Tafel slope of 64 mV dec−1. This work provided a facile and reliable synthetic approach to improve transition metal phosphides (TMPs) for electrocatalytic HER performance in alkaline electrolytes. |
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ISSN: | 2398-4902 |
DOI: | 10.1039/d0se01679a |