High conductive and dimensional stability proton exchange membranes with an all-carbon main chain and densely sulfonated structure

Guan, Jiayu; Sun, Xi; Yu, Huiting; Zheng, Jifu; Sun, Yuxuan; Li, Shenghai; Qin, Guorui; Zhang, Suobo

doi:10.1016/j.memsci.2024.122664

Journal of Membrane Science

2024

DOI: 10.1016/j.memsci.2024.122664

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High conductive and dimensional stability proton exchange membranes with an all-carbon main chain and densely sulfonated structure

Jiayu Guan,

Xi Sun,

Huiting Yu

et al.

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Cited by 3 publications

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High-performance proton exchange membrane derived from N-heterocycle poly(aryl ether sulfone)s with ether-free hydrophilic blocks and exhibiting good stability and proton-conducting performance

Liu,

Wu,

Zhang

et al. 2025

Journal of Membrane Science

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High-performance proton exchange membrane derived from N-heterocycle poly(aryl ether sulfone)s with ether-free hydrophilic blocks and exhibiting good stability and proton-conducting performance

Liu,

Wu,

Zhang

et al. 2025

Journal of Membrane Science

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Sulfonated Poly(fluorene alkylene)s Containing Dual Hydrophilic and Hydrophobic Side Chains for High-Performance Proton Exchange Membranes

Liang,

Liu,

Lin

et al. 2024

ACS Appl. Polym. Mater.

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Proton exchange membranes (PEMs) based on aromatic hydrocarbon polymers are considered promising alternatives to Nafion membranes. However, insufficient proton conductivity and stability hinder practical applications of hydrocarbon PEMs. Herein, we propose a series of aryl ether-free PEMs based on sulfonated poly(fluorene alkylene)s (SHF-HHF-x) by simultaneously incorporating dual hydrophilic and hydrophobic side chains. Benefiting from the featured side-chain structure, a well-defined microphase separation was formed within the SHF-HHF-x membranes. As a result, the SHF-HHF-x membranes exhibit high proton conductivity (up to 213.1 mS cm −1 at 80 °C), as well as a low swelling ratio (<30%). In addition, these membranes demonstrated excellent oxidative stability with a high residual weight (>86%), after soaking in Fenton's reagent (3% H 2 O 2 and 4 ppm Fe 2+ ) for 10 h. The H 2 −O 2 single cell assembled with the SHF-HHF-70 PEM reached a peak power density of 941.6 mW cm −2 at 80 °C. This study offers a design strategy for the preparation of high-performance PEMs.

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Facile construction of polyoxometalate-modified polyaryletherketone-based hybrid membranes with enhanced proton conductivity

Hu,

Du,

Yang

et al. 2025

Polyoxometalates

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High conductive and dimensional stability proton exchange membranes with an all-carbon main chain and densely sulfonated structure

Cited by 3 publications

References 56 publications

High-performance proton exchange membrane derived from N-heterocycle poly(aryl ether sulfone)s with ether-free hydrophilic blocks and exhibiting good stability and proton-conducting performance

High-performance proton exchange membrane derived from N-heterocycle poly(aryl ether sulfone)s with ether-free hydrophilic blocks and exhibiting good stability and proton-conducting performance

Sulfonated Poly(fluorene alkylene)s Containing Dual Hydrophilic and Hydrophobic Side Chains for High-Performance Proton Exchange Membranes

Facile construction of polyoxometalate-modified polyaryletherketone-based hybrid membranes with enhanced proton conductivity

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