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Research Article | Online first | Published: 13 April 2024

The difference of the ionomer–catalyst interfaces for poly(aryl piperidinium) hydroxide exchange membrane fuel cells and proton exchange membrane fuel cells

Show Author's Information Xuerui Liu1,2,§,  Xingdong Wang3,§,  Chanyu Zhang1,§,  Yun Cai4,  Bowen Chen1,2,  Dongyue Xin1,2,  Xiaoxiao Jin1,2,  Wei Zhu1,2,  Klaus Wippermann5,  Hui Li1( ),  Ruiyu Li4( ),  Zhongbin Zhuang1,2,6( )
Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
DeepHytec Co., Ltd., Shenzhen 518118, China
Institute of Energy and Climate Research (IEK-14), Forschungszentrum Jülich GmbH, Jülich 52425, Germany
Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China

§ Xuerui Liu, Xingdong Wang, and Chanyu Zhang contributed equally to this work.

Keywords:
oxygen reduction reaction, catalysts, interfaces, hydroxide exchange membrane fuel cells, ionomer
Topics:
Fuel cells
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Liu X, Wang X, Zhang C, et al. The difference of the ionomer–catalyst interfaces for poly(aryl piperidinium) hydroxide exchange membrane fuel cells and proton exchange membrane fuel cells. Nano Research, 2024, https://doi.org/10.1007/s12274-024-6584-7
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Abstract Full text Electronic supplementary material About this article

The microstructures of the ionomer–catalyst interfaces in the catalyst layers are important for the fuel cell performance because they determine the distribution of the active triple-phase boundaries. Here, we investigate the ionomer–catalyst interactions in hydroxide exchange membrane fuel cells (HEMFCs) using poly(aryl piperidinium) and compare them with proton exchange membrane fuel cells (PEMFCs). It is found that different catalyst layer microstructures are between the two types of fuel cell. The ionomer/carbon (I/C) ratio does not have a remarkable impact on the HEMFC performance, while it has a strong impact on the PEMFC performance, indicating the weaker interaction between the HEMFC ionomer and catalyst. Molecular dynamics simulations demonstrate that the HEMFC ionomer tends to distribute on the carbon support, unlike the PEMFC ionomer, which heavily covers the Pt nanoparticles. These results suggest that the poisoning effect of the ionomer on the catalyst is much weaker in HEMFCs, and the improved ionomer/catalyst interaction is beneficial for the HEMFC performances.


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About this article

The difference of the ionomer–catalyst interfaces for poly(aryl piperidinium) hydroxide exchange membrane fuel cells and proton exchange membrane fuel cells

Show Author's information Xuerui Liu1,2,§, Xingdong Wang3,§, Chanyu Zhang1,§, Yun Cai4, Bowen Chen1,2, Dongyue Xin1,2, Xiaoxiao Jin1,2, Wei Zhu1,2, Klaus Wippermann5, Hui Li1( ), Ruiyu Li4( ), Zhongbin Zhuang1,2,6( )
Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
DeepHytec Co., Ltd., Shenzhen 518118, China
Institute of Energy and Climate Research (IEK-14), Forschungszentrum Jülich GmbH, Jülich 52425, Germany
Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China

§ Xuerui Liu, Xingdong Wang, and Chanyu Zhang contributed equally to this work.

Abstract

The microstructures of the ionomer–catalyst interfaces in the catalyst layers are important for the fuel cell performance because they determine the distribution of the active triple-phase boundaries. Here, we investigate the ionomer–catalyst interactions in hydroxide exchange membrane fuel cells (HEMFCs) using poly(aryl piperidinium) and compare them with proton exchange membrane fuel cells (PEMFCs). It is found that different catalyst layer microstructures are between the two types of fuel cell. The ionomer/carbon (I/C) ratio does not have a remarkable impact on the HEMFC performance, while it has a strong impact on the PEMFC performance, indicating the weaker interaction between the HEMFC ionomer and catalyst. Molecular dynamics simulations demonstrate that the HEMFC ionomer tends to distribute on the carbon support, unlike the PEMFC ionomer, which heavily covers the Pt nanoparticles. These results suggest that the poisoning effect of the ionomer on the catalyst is much weaker in HEMFCs, and the improved ionomer/catalyst interaction is beneficial for the HEMFC performances.

Keywords: oxygen reduction reaction, catalysts, interfaces, hydroxide exchange membrane fuel cells, ionomer

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Acknowledgements

Publication history

Received: 24 January 2024
Revised: 21 February 2024
Accepted: 22 February 2024
Published: 13 April 2024

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© Tsinghua University Press 2024

Acknowledgements

Acknowledgements

This work was financially supported by Beijing Natural Science Foundation (No. Z210016).

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