Atomically dispersed platinum supported on curved carbon supports for efficient electrocatalytic hydrogen evolution

Daobin Liu, Xiyu Li, Shuangming Chen, Huan Yan, Changda Wang, Chuanqiang Wu, Yasir A. Haleem, Sai Duan, Junling Lu, Binghui Ge, Pulickel M. Ajayan, Yi Luo, Jun Jiang () and Li Song ()
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Daobin Liu: CAS Center for Excellence in Nanoscience, University of Science and Technology of China
Xiyu Li: Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Materials Science, University of Science and Technology of China
Shuangming Chen: CAS Center for Excellence in Nanoscience, University of Science and Technology of China
Huan Yan: Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Materials Science, University of Science and Technology of China
Changda Wang: CAS Center for Excellence in Nanoscience, University of Science and Technology of China
Chuanqiang Wu: CAS Center for Excellence in Nanoscience, University of Science and Technology of China
Yasir A. Haleem: CAS Center for Excellence in Nanoscience, University of Science and Technology of China
Sai Duan: Biotechnology and Health, Royal Institute of Technology
Junling Lu: Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Materials Science, University of Science and Technology of China
Binghui Ge: Institute of Physics, Chinese Academy of Sciences
Pulickel M. Ajayan: Rice University
Yi Luo: Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Materials Science, University of Science and Technology of China
Jun Jiang: Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Materials Science, University of Science and Technology of China
Li Song: CAS Center for Excellence in Nanoscience, University of Science and Technology of China

Nature Energy, 2019, vol. 4, issue 6, 512-518

Abstract: Abstract Dispersing catalytically active metals as single atoms on supports represents the ultimate in metal utilization efficiency and is increasingly being used as a strategy to design hydrogen evolution reaction (HER) electrocatalysts. Although platinum (Pt) is highly active for HER, given its high cost it is desirable to find ways to improve performance further while minimizing the Pt loading. Here, we use onion-like nanospheres of carbon (OLC) to anchor stable atomically dispersed Pt to act as a catalyst (Pt1/OLC) for the HER. In acidic media, the performance of the Pt1/OLC catalyst (0.27 wt% Pt) in terms of a low overpotential (38 mV at 10 mA cm−2) and high turnover frequencies (40.78 H2 s−1 at 100 mV) is better than that of a graphene-supported single-atom catalyst with a similar Pt loading, and comparable to a commercial Pt/C catalyst with 20 wt% Pt. First-principle calculations suggest that a tip-enhanced local electric field at the Pt site on the curved support promotes the reaction kinetics for hydrogen evolution.

Date: 2019
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DOI: 10.1038/s41560-019-0402-6

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