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Enhanced electrocatalytic activity and stability of PdCo@Pt core–shell nanoparticles for oxygen reduction reaction

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Abstract

The carbon-supported PdCo@Pt core–shell nanoparticles for an oxygen reduction reaction (ORR) were prepared via a two-step process at room temperature. The as-prepared PdCo@Pt/C with an average particle size of ~3.5 nm exhibited a well-defined nanostructure consisting of Pd-rich core and Pt shell formed by displacing Co core with Pt. Compared to pure Pt, PdCo@Pt/C showed a higher current density in the kinetic controlled region and more positive half-wave potential for the ORR. In a cycling stability test of the PdCo@Pt/C electrocatalyst, no remarkable activity loss was seen.

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Acknowledgments

This work was supported by New & Renewable Energy R&D Program (2011301003007A) of the Ministry of Knowledge and Economy.

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Authors and Affiliations

  1. Department of Chemical Engineering, Soongsil University, Seoul, 156-743, Republic of Korea

    Ah-Reum Park, Young-Woo Lee, Da-Hee Kwak & Kyung-Won Park

  2. Hyundai Motor Company, Mabuk-Ri, Gyeonggi-Do, Yongin, 446-912, Republic of Korea

    Bumwook Roh & Inchul Hwang

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  1. Ah-Reum Park
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  2. Young-Woo Lee
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  3. Da-Hee Kwak
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  4. Bumwook Roh
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  5. Inchul Hwang
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Correspondence to Kyung-Won Park.

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Park, AR., Lee, YW., Kwak, DH. et al. Enhanced electrocatalytic activity and stability of PdCo@Pt core–shell nanoparticles for oxygen reduction reaction. J Appl Electrochem 44, 1219–1223 (2014). https://doi.org/10.1007/s10800-014-0738-3

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  • DOI: https://doi.org/10.1007/s10800-014-0738-3

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