Volume 20, Issue 31 2400381
Research Article

VOx Matrix Confinement Approach to Generate Sub-3 nm L10-Pt-Based Intermetallic Catalysts for Fuel Cell Cathode

Yingjie Deng

Yingjie Deng

School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006 China

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Longhai Zhang

Longhai Zhang

Guangdong Provincial Key Laboratory of Fuel Cell Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641 China

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Jie Zheng

Jie Zheng

School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006 China

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Dai Dang

Corresponding Author

Dai Dang

School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006 China

Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang, 515200 China

E-mail: [email protected]; [email protected]; [email protected]; [email protected]

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Jiaxi Zhang

Jiaxi Zhang

Guangdong Provincial Key Laboratory of Fuel Cell Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641 China

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Xianrui Gu

Xianrui Gu

Research Institute of Petroleum Processing, Sinopec, No. 18, Xueyuan Road, Haidian, Beijing, 100083 China

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Xue Yang

Corresponding Author

Xue Yang

Research Institute of Petroleum Processing, Sinopec, No. 18, Xueyuan Road, Haidian, Beijing, 100083 China

E-mail: [email protected]; [email protected]; [email protected]; [email protected]

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Weiquan Tan

Weiquan Tan

Guangdong Provincial Key Laboratory of Fuel Cell Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641 China

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Liming Wang

Liming Wang

Guangdong Provincial Key Laboratory of Fuel Cell Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641 China

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Long Zeng

Long Zeng

School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006 China

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Chao Chen

Chao Chen

School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006 China

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Tiejun Wang

Corresponding Author

Tiejun Wang

School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006 China

E-mail: [email protected]; [email protected]; [email protected]; [email protected]

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Zhiming Cui

Corresponding Author

Zhiming Cui

Guangdong Provincial Key Laboratory of Fuel Cell Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641 China

E-mail: [email protected]; [email protected]; [email protected]; [email protected]

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First published: 19 April 2024
Citations: 9

Abstract

Pt-based intermetallic compounds (IMCs) are considered as a class of promising fuel cell electrocatalysts, owing to their outstanding intrinsic activity and durability. However, the synthesis of uniformly dispersed IMCs with small sizes presents a formidable challenge during the essential high-temperature annealing process. Herein, a facile and generally applicable VOx matrix confinement strategy is demonstrated for the controllable synthesis of ordered L10-PtM (M = Fe, Co, and Mn) nanoparticles, which not only enhances the dispersion of intermetallic nanocrystals, even at high loading (40 wt%), but also simplifies the oxide removal and acid-washing procedures. Taking intermetallic PtCo as an example, the as-prepared catalyst displays a high-performance oxygen reduction activity (mass activity of 1.52 A mgPt−1) and excellent stability in the membrane electrode assemblies (MEAs) (the ECSA has just 7% decay after durability test). This strategy provides an economical and scalable route for the controlled synthesis of Pt-based intermetallic catalysts, which can pave a way for the commercialization of fuel cell technologies.

Conflict of Interest

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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