Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction

Xun Cui; Peng Xiao; Jing Wang; Ming Zhou; Wenlong Guo; Yang Yang; Yanjie He; Zewei Wang; Yingkui Yang; Yunhuai Zhang; Zhiqun Lin

doi:10.1002/anie.201701149

Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction

Xun Cui, Peng Xiao, Jing Wang, Ming Zhou, Wenlong Guo, Yang Yang, Yanjie He, Zewei Wang, Yingkui Yang, Yunhuai Zhang, Zhiqun Lin

Department of Chemistry & Nanoscience

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

225 Scopus citations

Abstract

Three-dimensional (3D) interconnected metal alloy nanostructures possess superior catalytic performance owing to their advantageous characteristics, including improved catalytic activity, corrosion resistance, and stability. Hierarchically structured Ni-Cu alloys composed of 3D network-like microscopic branches with nanoscopic dendritic feelers on each branch were crafted by a facile and efficient hydrogen evolution-assisted electrodeposition approach. They were subsequently exploited for methanol electrooxidation in alkaline media. Among three hierarchically structured Ni-Cu alloys with different Ni/Cu ratios (Ni_0.25Cu_0.75, Ni_0.50Cu_0.50, and Ni_0.75Cu_0.25), the Ni_0.75Cu_0.25 electrode exhibited the fastest electrochemical response and highest electrocatalytic activity toward methanol oxidation. The markedly enhanced performance of Ni_0.75Cu_0.25 eletrocatalyst can be attributed to its alloyed structure with the proper Ni/Cu ratio and a large number of active sites on the surface of hierarchical structures.

Original language	English
Pages (from-to)	4488-4493
Number of pages	6
Journal	Angewandte Chemie - International Edition
Volume	56
Issue number	16
DOIs	https://doi.org/10.1002/anie.201701149
State	Published - 10 Apr 2017

Bibliographical note

Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

Ni-Cu alloy
electrocatalysis
electrodeposition
hierarchical structures
methanol oxidation

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10.1002/anie.201701149

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title = "Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction",

abstract = "Three-dimensional (3D) interconnected metal alloy nanostructures possess superior catalytic performance owing to their advantageous characteristics, including improved catalytic activity, corrosion resistance, and stability. Hierarchically structured Ni-Cu alloys composed of 3D network-like microscopic branches with nanoscopic dendritic feelers on each branch were crafted by a facile and efficient hydrogen evolution-assisted electrodeposition approach. They were subsequently exploited for methanol electrooxidation in alkaline media. Among three hierarchically structured Ni-Cu alloys with different Ni/Cu ratios (Ni0.25Cu0.75, Ni0.50Cu0.50, and Ni0.75Cu0.25), the Ni0.75Cu0.25 electrode exhibited the fastest electrochemical response and highest electrocatalytic activity toward methanol oxidation. The markedly enhanced performance of Ni0.75Cu0.25 eletrocatalyst can be attributed to its alloyed structure with the proper Ni/Cu ratio and a large number of active sites on the surface of hierarchical structures.",

keywords = "Ni-Cu alloy, electrocatalysis, electrodeposition, hierarchical structures, methanol oxidation",

author = "Xun Cui and Peng Xiao and Jing Wang and Ming Zhou and Wenlong Guo and Yang Yang and Yanjie He and Zewei Wang and Yingkui Yang and Yunhuai Zhang and Zhiqun Lin",

note = "Publisher Copyright: {\textcopyright} 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim",

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doi = "10.1002/anie.201701149",

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T1 - Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction

AU - Cui, Xun

AU - Xiao, Peng

AU - Wang, Jing

AU - Zhou, Ming

AU - Guo, Wenlong

AU - Yang, Yang

AU - He, Yanjie

AU - Wang, Zewei

AU - Yang, Yingkui

AU - Zhang, Yunhuai

AU - Lin, Zhiqun

PY - 2017/4/10

Y1 - 2017/4/10

N2 - Three-dimensional (3D) interconnected metal alloy nanostructures possess superior catalytic performance owing to their advantageous characteristics, including improved catalytic activity, corrosion resistance, and stability. Hierarchically structured Ni-Cu alloys composed of 3D network-like microscopic branches with nanoscopic dendritic feelers on each branch were crafted by a facile and efficient hydrogen evolution-assisted electrodeposition approach. They were subsequently exploited for methanol electrooxidation in alkaline media. Among three hierarchically structured Ni-Cu alloys with different Ni/Cu ratios (Ni0.25Cu0.75, Ni0.50Cu0.50, and Ni0.75Cu0.25), the Ni0.75Cu0.25 electrode exhibited the fastest electrochemical response and highest electrocatalytic activity toward methanol oxidation. The markedly enhanced performance of Ni0.75Cu0.25 eletrocatalyst can be attributed to its alloyed structure with the proper Ni/Cu ratio and a large number of active sites on the surface of hierarchical structures.

AB - Three-dimensional (3D) interconnected metal alloy nanostructures possess superior catalytic performance owing to their advantageous characteristics, including improved catalytic activity, corrosion resistance, and stability. Hierarchically structured Ni-Cu alloys composed of 3D network-like microscopic branches with nanoscopic dendritic feelers on each branch were crafted by a facile and efficient hydrogen evolution-assisted electrodeposition approach. They were subsequently exploited for methanol electrooxidation in alkaline media. Among three hierarchically structured Ni-Cu alloys with different Ni/Cu ratios (Ni0.25Cu0.75, Ni0.50Cu0.50, and Ni0.75Cu0.25), the Ni0.75Cu0.25 electrode exhibited the fastest electrochemical response and highest electrocatalytic activity toward methanol oxidation. The markedly enhanced performance of Ni0.75Cu0.25 eletrocatalyst can be attributed to its alloyed structure with the proper Ni/Cu ratio and a large number of active sites on the surface of hierarchical structures.

KW - Ni-Cu alloy

KW - electrocatalysis

KW - electrodeposition

KW - hierarchical structures

KW - methanol oxidation

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U2 - 10.1002/anie.201701149

DO - 10.1002/anie.201701149

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SN - 1433-7851

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JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 16

ER -

Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction

Abstract

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Keywords

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