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Issue 8, 2020
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Construction of an iron and oxygen co-doped nickel phosphide based on MOF derivatives for highly efficient and long-enduring water splitting

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Abstract

The exploitation of high catalytic activity electrocatalysts with abundant earth reserves is the prerequisite for extensive hydrogen production from water electrolysis. Herein, based on a feasible design idea, we fabricate an iron and oxygen co-doped nickel phosphide ((Fe0.1Ni0.9)2P(O)) by phosphating metal–organic framework (MOF) derivatives supported on nickel foam (NF) for efficient water splitting. In 1.0 M KOH, the (Fe0.1Ni0.9)2P(O)/NF electrode only requires an overpotential of 240 mV to reach 100 mA cm−2 for the OER and 87 mV to reach 10 mA cm−2 for the HER, respectively. Encouragingly, an alkaline electrolyzer assembled with the (Fe0.1Ni0.9)2P(O)/NF electrode can achieve a current density of 10 mA cm−2 at an extremely low voltage of 1.50 V, which is one of the lowest values currently achievable with non-precious metal electrocatalysts. Undoubtedly, this work provides a novel and practical strategy to synthesize highly efficient and durable electrocatalysts based on MOF derivatives for overall water splitting and other electrocatalysis.

Graphical abstract: Construction of an iron and oxygen co-doped nickel phosphide based on MOF derivatives for highly efficient and long-enduring water splitting

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Supplementary files

Article information


Submitted
12 Dec 2019
Accepted
23 Jan 2020
First published
25 Jan 2020

J. Mater. Chem. A, 2020,8, 4570-4578
Article type
Paper

Construction of an iron and oxygen co-doped nickel phosphide based on MOF derivatives for highly efficient and long-enduring water splitting

C. Lin, D. Wang, H. Jin, P. Wang, D. Chen, B. Liu and S. Mu, J. Mater. Chem. A, 2020, 8, 4570
DOI: 10.1039/C9TA13583A

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