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One-pot synthesis of interconnected Pt95Co5 nanowires with enhanced electrocatalytic performance for methanol oxidation reaction

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Abstract

Shape- and composition-controlled synthesis of platinum-based nanocrystals (NCs) is critical for the development of electrocatalysts that have high activity toward the methanol oxidation reaction (MOR) in direct methanol fuel cells (DMFCs). We report one-pot surfactant-free synthesis of interconnected Pt95Co5 nanowires (NWs) via an oriented attachment process, which has distinct advantages over conventional template- and surfactant-assisted approaches. Enhanced electrochemical activities toward MOR were confirmed through comparison with pure Pt NWs and commercial Pt/C catalyst. Pt95Co5 NWs demonstrated the highest current density during the long-term stability test. These results reveal that the introduction of the 3d-transition metal Co can reduce the catalyst cost and contribute to the improvement of electrochemical performance. The integrated design of interconnected NW structure, bimetallic composition, and clean surfaces in the present system may open a new way to the development of excellent electrocatalysts in DMFCs.

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Acknowledgements

The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Nos. 21435005 and 21627808), the Development Project of Science and Technology of Jilin Province (No. 20170101195JC), and Key Research Program of Frontier Sciences, Chinese Academy of Sciences (No. QYZDY-SSW-SLH019).

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Authors and Affiliations

  1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China

    Qingqing Lu, Litai Sun, Xue Zhao, Jianshe Huang, Ce Han & Xiurong Yang

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Qingqing Lu, Litai Sun & Xue Zhao

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  1. Qingqing Lu
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  2. Litai Sun
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  3. Xue Zhao
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Correspondence to Xiurong Yang.

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One-pot synthesis of interconnected Pt95Co5 nanowires with enhanced electrocatalytic performance for methanol oxidation reaction

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Lu, Q., Sun, L., Zhao, X. et al. One-pot synthesis of interconnected Pt95Co5 nanowires with enhanced electrocatalytic performance for methanol oxidation reaction. Nano Res. 11, 2562–2572 (2018). https://doi.org/10.1007/s12274-017-1881-z

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