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Research Article

Trimetallic PtRhNi alloy nanoassemblies as highly active electrocatalyst for ethanol electrooxidation

Huimin Liu1, Jiahui Li2, Lijuan Wang3, Yawen Tang2( ), Bao Yu Xia3,4( ), Yu Chen1 ( )
Key Laboratory of Macromolecular Science of Shaanxi ProvinceShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal University, 620 Changan RoadXi'an710062China
Jiangsu Key Laboratory of New Power BatteriesJiangsu Collaborative Innovation Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal University, 1 Wenyuan RoadNanjing210023China
A key laboratory of Material Chemistry for Energy Conversion and StorageMinistry of EducationHubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringWuhan National Laboratory for OptoelectronicsHuazhong University of Science and Technology (HUST), 1037 Luoyu RoadWuhan430074China
Shenzhen Institute of Huazhong University of Science and Technology, 9 Yuexing RoadShenzhen518000China
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Abstract

Although nanostructures based on noble metal alloys are widely utilized in (electro)catalysis, their low-temperature synthesis remains an enormous challenge due to the different Nernst equilibrium potentials of metal precursors. Herein, we describe the successful synthesis of trimetallic PtRhNi alloy nanoassemblies (PtRhNi-ANAs) with tunable Pt/Rh ratios using a simple mixed cyanogel reduction method and provide a detailed characterization of their chemical composition, morphology, and structure. Additionally, the electrochemical properties of PtRhNi-ANAs are examined by cyclic voltammetry, revealing composition-dependent electrocatalytic activity in the ethanol oxidation reaction (EOR). Compared to a commercial Pt black electrocatalyst, optimized Pt3Rh1Ni2-ANAs display remarkably enhanced EOR electrocatalytic performance in alkaline media.

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Keywords

cyanogeltrimetallic alloyelectrocatalysisactivityethanol oxidation reaction

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Nano Research
Volume 10 Issue 10,
October 2017
Pages 3324-3332
DOI: 10.1007/s12274-017-1545-z

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Cite this article:
Liu H, Li J, Wang L, et al. Trimetallic PtRhNi alloy nanoassemblies as highly active electrocatalyst for ethanol electrooxidation. Nano Research, 2017, 10(10): 3324-3332. https://doi.org/10.1007/s12274-017-1545-z

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Received: 22 January 2017
Revised: 16 February 2017
Accepted: 18 February 2017
Published: 27 May 2017
© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2017