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Cerium and nitrogen doped CoP nanorod arrays for hydrogen evolution in all pH conditions

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Abstract

Exploring pH-universal electrocatalysts for hydrogen evolution has attracted focused research attention. Heteroatom doping is recognized as an effective solution for activating the catalytic activity of transition metal-based electrocatalysts. Herein, cerium with 4f electrons and nitrogen were firstly selected as guest atoms to be doped into the CoP nanorod array host catalyst with the aim to produce efficient nonprecious-metal based catalysts for hydrogen evolution in all pH conditions. The electrocatalytic measurements proved that Ce and N co-doping endows CoP with remarkably improved intrinsic catalytic activity and kinetics, affording a current of 10 mA cm−2 at the low overpotentials of 66 mV, 72 mV, and 41 mV in 0.5 M H2SO4, 1 M phosphate buffer, and 1 M KOH, respectively. Such catalytic performances prove that the Ce and N doped CoP nanorod array is a promising pH-tolerant catalyst.

Graphical abstract: Cerium and nitrogen doped CoP nanorod arrays for hydrogen evolution in all pH conditions

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Publication details

The article was received on 02 Aug 2019, accepted on 10 Sep 2019 and first published on 11 Sep 2019


Article type: Paper
DOI: 10.1039/C9SE00588A
Sustainable Energy Fuels, 2019, Advance Article

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    Cerium and nitrogen doped CoP nanorod arrays for hydrogen evolution in all pH conditions

    P. Liu, Y. Lu, W. Ma, L. Ma, Q. Liu, X. Zhang and J. Guo, Sustainable Energy Fuels, 2019, Advance Article , DOI: 10.1039/C9SE00588A

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