Bimetallic NiMoN Nanowires with a Preferential Reactive Facet: An Ultraefficient Bifunctional Electrocatalyst for Overall Water Splitting

Bin Chang; Jing Yang; Yongliang Shao; Lei Zhang; Weiliu Fan; Baibiao Huang; Yongzhong Wu; Xiaopeng Hao

doi:10.1002/cssc.201801337

Bimetallic NiMoN Nanowires with a Preferential Reactive Facet: An Ultraefficient Bifunctional Electrocatalyst for Overall Water Splitting

Bin Chang, Jing Yang, Yongliang Shao, Lei Zhang, Weiliu Fan^*, Baibiao Huang, Yongzhong Wu, Xiaopeng Hao

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

102 Scopus citations

Abstract

Faceted nanomaterials with highly reactive exposed facets have been the target of intense researches owing to their significantly enhanced catalytic performance. NiMoN nanowires with the (100) facet preferentially exposed were prepared by an in situ N/O exchange and the morphology tuned by using a rationally designed NiMoO₄ precursor. The facet-tuned NiMoN nanowires exhibited excellent electrocatalytic activity for the hydrogen evolution reaction (HER) under both alkaline and acidic conditions that was comparable to that of noble metal platinum. DFT calculations further revealed that the catalytic activity of NiMoN nanowires towards HER on the (100) reactive facet is significantly greater than that on the (001) or (101) facets, owing to the low adsorption free energy of H* (ΔG_H*) on the (100) facet. The NiMoN nanowires also demonstrated outstanding activity towards the alkaline oxygen evolution reaction and an excellent durable activity for overall water splitting, with a cell potential as low as 1.498 V at 20 mA cm⁻². This work provides insights into improving electrocatalytic activity and developing advanced non-noble metal bifunctional electrocatalysts.

Original language	English (US)
Pages (from-to)	3198-3207
Number of pages	10
Journal	CHEMSUSCHEM
Volume	11
Issue number	18
DOIs	https://doi.org/10.1002/cssc.201801337
State	Published - Sep 21 2018

Keywords

DFT calculations
electrocatalysis
NiMoN nanowires
overall water splitting
reactive facet

ASJC Scopus subject areas

Environmental Chemistry
General Chemical Engineering
General Materials Science
General Energy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/cssc.201801337

Cite this

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title = "Bimetallic NiMoN Nanowires with a Preferential Reactive Facet: An Ultraefficient Bifunctional Electrocatalyst for Overall Water Splitting",

abstract = "Faceted nanomaterials with highly reactive exposed facets have been the target of intense researches owing to their significantly enhanced catalytic performance. NiMoN nanowires with the (100) facet preferentially exposed were prepared by an in situ N/O exchange and the morphology tuned by using a rationally designed NiMoO4 precursor. The facet-tuned NiMoN nanowires exhibited excellent electrocatalytic activity for the hydrogen evolution reaction (HER) under both alkaline and acidic conditions that was comparable to that of noble metal platinum. DFT calculations further revealed that the catalytic activity of NiMoN nanowires towards HER on the (100) reactive facet is significantly greater than that on the (001) or (101) facets, owing to the low adsorption free energy of H* (ΔGH*) on the (100) facet. The NiMoN nanowires also demonstrated outstanding activity towards the alkaline oxygen evolution reaction and an excellent durable activity for overall water splitting, with a cell potential as low as 1.498 V at 20 mA cm−2. This work provides insights into improving electrocatalytic activity and developing advanced non-noble metal bifunctional electrocatalysts.",

keywords = "DFT calculations, electrocatalysis, NiMoN nanowires, overall water splitting, reactive facet",

author = "Bin Chang and Jing Yang and Yongliang Shao and Lei Zhang and Weiliu Fan and Baibiao Huang and Yongzhong Wu and Xiaopeng Hao",

note = "Funding Information: This work is supported by the National Natural Science Foundation of China (Contract No. 51572153, 51602177), the Major Basic Program of the Natural Science Foundation of Shandong Province (Contract ZR2017ZB0317), the Fundamental Research Funds of Shandong University and Taishan Scholars Program of Shandong Province. Publisher Copyright: {\textcopyright} 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim",

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T2 - An Ultraefficient Bifunctional Electrocatalyst for Overall Water Splitting

AU - Chang, Bin

AU - Yang, Jing

AU - Shao, Yongliang

AU - Zhang, Lei

AU - Fan, Weiliu

AU - Huang, Baibiao

AU - Wu, Yongzhong

AU - Hao, Xiaopeng

N1 - Funding Information: This work is supported by the National Natural Science Foundation of China (Contract No. 51572153, 51602177), the Major Basic Program of the Natural Science Foundation of Shandong Province (Contract ZR2017ZB0317), the Fundamental Research Funds of Shandong University and Taishan Scholars Program of Shandong Province. Publisher Copyright: © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2018/9/21

Y1 - 2018/9/21

N2 - Faceted nanomaterials with highly reactive exposed facets have been the target of intense researches owing to their significantly enhanced catalytic performance. NiMoN nanowires with the (100) facet preferentially exposed were prepared by an in situ N/O exchange and the morphology tuned by using a rationally designed NiMoO4 precursor. The facet-tuned NiMoN nanowires exhibited excellent electrocatalytic activity for the hydrogen evolution reaction (HER) under both alkaline and acidic conditions that was comparable to that of noble metal platinum. DFT calculations further revealed that the catalytic activity of NiMoN nanowires towards HER on the (100) reactive facet is significantly greater than that on the (001) or (101) facets, owing to the low adsorption free energy of H* (ΔGH*) on the (100) facet. The NiMoN nanowires also demonstrated outstanding activity towards the alkaline oxygen evolution reaction and an excellent durable activity for overall water splitting, with a cell potential as low as 1.498 V at 20 mA cm−2. This work provides insights into improving electrocatalytic activity and developing advanced non-noble metal bifunctional electrocatalysts.

AB - Faceted nanomaterials with highly reactive exposed facets have been the target of intense researches owing to their significantly enhanced catalytic performance. NiMoN nanowires with the (100) facet preferentially exposed were prepared by an in situ N/O exchange and the morphology tuned by using a rationally designed NiMoO4 precursor. The facet-tuned NiMoN nanowires exhibited excellent electrocatalytic activity for the hydrogen evolution reaction (HER) under both alkaline and acidic conditions that was comparable to that of noble metal platinum. DFT calculations further revealed that the catalytic activity of NiMoN nanowires towards HER on the (100) reactive facet is significantly greater than that on the (001) or (101) facets, owing to the low adsorption free energy of H* (ΔGH*) on the (100) facet. The NiMoN nanowires also demonstrated outstanding activity towards the alkaline oxygen evolution reaction and an excellent durable activity for overall water splitting, with a cell potential as low as 1.498 V at 20 mA cm−2. This work provides insights into improving electrocatalytic activity and developing advanced non-noble metal bifunctional electrocatalysts.

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Bimetallic NiMoN Nanowires with a Preferential Reactive Facet: An Ultraefficient Bifunctional Electrocatalyst for Overall Water Splitting

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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