Volume 137, Issue 2 e202414989
Forschungsartikel

Harnessing the Synergistic Interplay between Atomic-Scale Vacancies and Ligand Effect to Optimize the Oxygen Reduction Activity and Tolerance Performance

Shenghua Ye

Shenghua Ye

State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing, 100871 China

Graphene Composite Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060 P. R. China

Shenzhen Eigen-Equation Graphene Technology Co. Ltd., Shenzhen, 518000 PR China

These authors contributed equally to this work.

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Wenda Chen

Wenda Chen

Graphene Composite Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060 P. R. China

These authors contributed equally to this work.

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Zhijun Ou

Zhijun Ou

Graphene Composite Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060 P. R. China

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Qinghao Zhang

Qinghao Zhang

Graphene Composite Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060 P. R. China

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Jie Zhang

Jie Zhang

Graphene Composite Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060 P. R. China

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Yongliang Li

Yongliang Li

Graphene Composite Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060 P. R. China

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Xiangzhong Ren

Xiangzhong Ren

Graphene Composite Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060 P. R. China

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Xiaoping Ouyang

Xiaoping Ouyang

School of Materials Science and Engineering, Xiangtan University, Xiangtan, P. R. China

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Lirong Zheng

Corresponding Author

Lirong Zheng

Institute of High Energy Physics Chinese Academy of Sciences, Beijing, 100049 PR China

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Xueqing Yan

Corresponding Author

Xueqing Yan

State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing, 100871 China

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Jianhong Liu

Jianhong Liu

Graphene Composite Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060 P. R. China

Shenzhen Eigen-Equation Graphene Technology Co. Ltd., Shenzhen, 518000 PR China

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Prof. Qianling Zhang

Corresponding Author

Prof. Qianling Zhang

Graphene Composite Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060 P. R. China

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First published: 04 September 2024
Citations: 2

Abstract

Defect engineering is an effective strategy for regulating the electrocatalysis of nanomaterials, yet it is seldom considered for modulating Pt-based electrocatalysts for the oxygen reduction reaction (ORR). In this study, we designed Ni-doped vacancy-rich Pt nanoparticles anchored on nitrogen-doped graphene (Vac-NiPt NPs/NG) with a low Pt loading of 3.5 wt . % and a Ni/Pt ratio of 0.038 : 1. Physical characterizations confirmed the presence of abundant atomic-scale vacancies in the Pt NPs induces long-range lattice distortions, and the Ni dopant generates a ligand effect resulting in electronic transfer from Ni to Pt. Experimental results and theoretical calculations indicated that atomic-scale vacancies mainly contributed the tolerance performances towards CO and CH3OH, the ligand effect derived from a tiny of Ni dopant accelerated the transformation from *O to *OH species, thereby improved the ORR activity without compromising the tolerance capabilities. Benefiting from the synergistic interplay between atomic-scale vacancies and ligand effect, as-prepared Vac-NiPt NPs/NG exhibited improved ORR activity, sufficient tolerance capabilities, and excellent durability. This study offers a new avenue for modulating the electrocatalytic activity of metal-based nanomaterials.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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