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Research Article

Ultrathin curved PdNiRu nanosheets as bifunctional catalysts for oxygen reduction and ethylene glycol oxidation

Xianzeng Li1,§, Tingyu Lu1,§, Huan Pang5, Mingyi Zhang6, Dongdong Xu1,4( ), Lin Xu1( ), Min Han2( ), Jun Yang3( )
Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
Fujian Cross Strait Institute of Flexible Electronics (Future Technology), Fujian Normal University, Fuzhou 350117, China
State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China
Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China

§ Xianzeng Li and Tingyu Lu contributed equally to this work.

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Graphical Abstract

We presented the facile synthesis of PdNiRu nanosheets (NSs) with ultrathin and highly curved/folded architecture and explored their bifunctional catalytic activities in cathodic oxygen reduction reaction (ORR) and anodic ethylene glycol oxidation reaction (EGOR).

Abstract

Pd-based metallic nanosheets with advanced physicochemical properties have been widely prepared and employed in various electrocatalytic reactions. However, few concerns were focused on their multiple performances in different electrocatalysis. Here, highly curved and ultrathin PdNiRu nanosheets (NSs) are developed by facile wet-chemistry strategy and exhibit excellent electrocatalytic performance toward both oxygen reduction reaction (ORR) and ethylene glycol oxidation reaction (EGOR). Owing to the synergistically structural (e.g., ultrathin, curved, defects/steps-rich) and compositional (ternary alloy) advantages, PdNiRu NSs exhibited enhanced ORR and EGOR specific/mass activities and better stability/durability than control electrocatalysts. The specific activity (5.52 mA·cm−2) and mass activity (1.13 A·mgPd−1) of the PdNiRu NSs in ORR are 4.8 and 3.4 times as the ones of commercial Pt/C, respectively. The mass activity of PdNiRu NSs (3.86 A·mgPd−1) in EGOR is 2.6 times as commercial Pd/C (1.51 A·mgPd−1). This study is helpful for the development of desired electrocatalysts with multi-functional application in practical fuel cells.

Keywords

ultrathin nanosheetsnoble metalelectrocatalystsbifunctional

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Nano Research
Volume 17 Issue 5,
May 2024
Pages 3777-3784
DOI: 10.1007/s12274-023-6314-6
Cite this article:
Li X, Lu T, Pang H, et al. Ultrathin curved PdNiRu nanosheets as bifunctional catalysts for oxygen reduction and ethylene glycol oxidation. Nano Research, 2024, 17(5): 3777-3784. https://doi.org/10.1007/s12274-023-6314-6
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Received: 03 August 2023
Revised: 20 October 2023
Accepted: 03 November 2023
Published: 02 December 2023
© Tsinghua University Press 2023
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