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Nano Research

, Volume 12, Issue 2, pp 429–436 | Cite as

Intermetallic PtBi core/ultrathin Pt shell nanoplates for efficient and stable methanol and ethanol electro-oxidization

  • Xiaolei Yuan
  • Xiaojing Jiang
  • Muhan Cao
  • Lei Chen
  • Kaiqi Nie
  • Yong Zhang
  • Yong Xu
  • Xuhui Sun
  • Yanguang Li
  • Qiao Zhang
Research Article

Abstract

The development of Pt-based core/shell nanoparticles represents an emerging class of electrocatalysts for fuel cells, such as methanol oxidation reaction (MOR) and ethanol oxidation reaction (EOR). Here, we present a one-pot synthesis approach to prepare hexagonal PtBi/Pt core/shell nanostructure composed of an intermetallic Pt1Bi1 core and an ultrathin Pt shell with well-defined shape, size, and composition. The structure and the synergistic effect among different components enhanced their MOR and EOR performance. The optimized Pt2Bi nanoplates exhibit excellent mass activities in both MOR (4,820 mA·mgPt –1) and EOR (5,950 mA·mgPt–1) conducted in alkaline media, which are 6.15 times and 8.63 times higher than those of commercial Pt/C, respectively. Pt2Bi nanoplates also show superior operation durability to commercial Pt/C. This work may inspire the rational design and synthesis of Pt-based nanoparticles with improved performance for fuel cells and other applications.

Keywords

intermetallics nanoplates core–shell structure methanol oxidation reaction ethanol oxidation reaction 

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Notes

Acknowledgements

This work is supported by the Ministry of Science and Technology of the People’s Republic of China (No. 2016YFE0129600), the National Natural Science Foundation of China (Nos. 21673150, 21611540336, and 21703146), and the Postdoctoral Science Foundation of China (No. 2016M591909). We acknowledge the financial support from the 111 Project, Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO–CIC), the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and SWC for Synchrotron Radiation Research.

Supplementary material

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Intermetallic PtBi core/ultrathin Pt shell nanoplates for efficient and stable methanol and ethanol electro-oxidization

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© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, SWC for Synchrotron Radiation ResearchSoochow UniversitySuzhouChina

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