Volume 142, Issue 17 e56804
RESEARCH ARTICLE

Enhancement of Phosphoric Acid-Functionalized Graphene Oxide on SPEEK Membrane Performance

Juan Li

Juan Li

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, China

Contribution: Data curation (lead), ​Investigation (lead), Methodology (lead), Writing - original draft (lead)

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Jiang Liu

Jiang Liu

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, China

Zhengzhou Research Institute of Harbin Institute of Technology, Zhengzhou, China

Contribution: ​Investigation (equal), Writing - review & editing (equal)

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Shuai Wang

Corresponding Author

Shuai Wang

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, China

Zhengzhou Research Institute of Harbin Institute of Technology, Zhengzhou, China

Correspondence:

Shuai Wang ([email protected])

Contribution: Supervision (lead), Writing - review & editing (lead)

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Yao Xu

Yao Xu

School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei, China

Contribution: Writing - review & editing (equal)

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First published: 06 February 2025
Citations: 1

Funding: The work was supported by Hefei University of Technology (JZ2022HGQA0132), Anhui Province (2022A576).

ABSTRACT

Sulfonated poly ether ether ketone (SPEEK) membrane has a great potential in the application of proton exchange membrane fuel cells owing to low cost. However, it suffers from limited proton conductivity. In this paper, quantum chemistry calculation and molecular dynamics simulation are employed to reveal the enhancing mechanism of phosphoric acid-functionalized graphene oxide (GO) on proton conduction in the SPEEK membrane. The results reveal that the strong interaction between sulfonic acid group and phosphoric acid group leads to the dissociation of proton and the proton transfer pathway with a low energy barrier is formed. Meanwhile, it is found that the phosphoric acid-functionalized GO can interact well with water molecule and membrane matrix so as to promote the transport of water molecules in the membrane.

Data Availability Statement

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

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