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Ma L, Luo X, Kropf AJ, et al. Insight into the Catalytic Mechanism of Bimetallic Platinum-Copper Core-Shell Nanostructures for Nonaqueous Oxygen Evolution Reactions. Nano Lett. 2015;16(1):781-5doi: 10.1021/acs.nanolett.5b04794.
Ma, L., Luo, X., Kropf, A. J., Wen, J., Wang, X., Lee, S., Myers, D. J., Miller, D., Wu, T., Lu, J., & Amine, K. (2016). Insight into the Catalytic Mechanism of Bimetallic Platinum-Copper Core-Shell Nanostructures for Nonaqueous Oxygen Evolution Reactions. Nano letters, 16(1), 781-5. https://doi.org/10.1021/acs.nanolett.5b04794
Ma, Lu, et al. "Insight into the Catalytic Mechanism of Bimetallic Platinum-Copper Core-Shell Nanostructures for Nonaqueous Oxygen Evolution Reactions." Nano letters vol. 16,1 (2016): 781-5. doi: https://doi.org/10.1021/acs.nanolett.5b04794
Ma L, Luo X, Kropf AJ, Wen J, Wang X, Lee S, Myers DJ, Miller D, Wu T, Lu J, Amine K. Insight into the Catalytic Mechanism of Bimetallic Platinum-Copper Core-Shell Nanostructures for Nonaqueous Oxygen Evolution Reactions. Nano Lett. 2016 Jan 13;16(1):781-5. doi: 10.1021/acs.nanolett.5b04794. Epub 2015 Dec 31. PMID: 26709945.
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Nano Lett. 2016 Jan 13;16(1):781-5. doi: 10.1021/acs.nanolett.5b04794. Epub 2015 Dec 31.

Insight into the Catalytic Mechanism of Bimetallic Platinum-Copper Core-Shell Nanostructures for Nonaqueous Oxygen Evolution Reactions.

Nano letters

Lu Ma, Xiangyi Luo, A Jeremy Kropf, Jianguo Wen, Xiaoping Wang, Sungsik Lee, Deborah J Myers, Dean Miller, Tianpin Wu, Jun Lu, Khalil Amine

Affiliations

  1. X-ray Science Division, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.
  2. Material Science Division, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.
  3. Chemical Sciences and Engineering Division, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.
  4. Electron Microscopy Center - Center for Nanoscale Materials, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.

PMID: 26709945 DOI: 10.1021/acs.nanolett.5b04794

Abstract

The oxygen evolution reaction (OER) plays a critical role in multiple energy conversion and storage applications. However, its sluggish kinetics usually results in large voltage polarization and unnecessary energy loss. Therefore, designing efficient catalysts that could facilitate this process has become an emerging topic. Here, we present a unique Pt-Cu core-shell nanostructure for catalyzing the nonaqueous OER. The catalysts were systematically investigated with comprehensive spectroscopic techniques, and applied in nonaqueous Li-O2 electrochemical cells, which exhibited dramatically reduced charging overpotential (<0.2 V). The superior performance is explained by the robust Cu(I) surface sites stabilized by the Pt core in the nanostructure. The insights into the catalytic mechanism of the unique Pt-Cu core-shell nanostructure gained in this work are expected to serve as a guide for future design of other nanostructured bimetallic OER catalysts.

Keywords: X-ray absorption spectroscopy; alloys; bimetallic catalysts; nanostructures; oxygen evolution reaction

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