Highly conductive and stable hybrid ionic cross-linked sulfonated PEEK for fuel cell

Juanjuan Han; Ying Wu; Jing Pan; Yanqiu Peng; Ying Wang; Chen Chen; Qiyun Pan; Bo Xie; Nian Zhao; Yu Wang; Juntao Lu; Li Xiao; Lin Zhuang

doi:10.1016/j.electacta.2018.08.147

Highly conductive and stable hybrid ionic cross-linked sulfonated PEEK for fuel cell

Juanjuan Han, Ying Wu, Jing Pan, Yanqiu Peng, Ying Wang, Chen Chen, Qiyun Pan, Bo Xie, Nian Zhao, Yu Wang, Juntao Lu, Li Xiao, Lin Zhuang

Chemistry

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

An ideal proton exchange membrane for fuel-cell application should possess excellent dimensional stability, high ionic conductivity and inexpensiveness. Introducing cross-links into the polymer structures is a popular strategy to alleviate the tradeoff between swelling ratio and ionic conductivity of high ion exchange capacity proton exchange membranes. However, the cross-links in these membranes will block the transport of H⁺, resulting in unfavorable decrease of conductivity. Here we report a systematic study of acSPEEK-S_x membranes with alkyl chain attached ionic cross-links to demonstrate how the unique cross-links can improve both the conductivity and swelling behavior of the materials. Compared to the conventional SPEEK, in addition to high anti-oxidative stability, the ionic conductivity and swelling behavior of the acSPEEK-S_x samples are significantly improved. A high proton conductivity of 101.2 mS cm⁻¹ and a low swelling degree of 15.0% are observed in the acSPEEK-S₆ membrane at the temperature of 80 °C. Based on the high-performance acSPEEK-S₆ sample, a peak power density of 750 mW cm⁻² is achieved at 60 °C, which is similar or superior to those of Nafion 112 (710 mW cm⁻²) under the same measurement conditions.

Original language	English (US)
Pages (from-to)	353-361
Number of pages	9
Journal	Electrochimica Acta
Volume	291
DOIs	https://doi.org/10.1016/j.electacta.2018.08.147
State	Published - Nov 20 2018

All Science Journal Classification (ASJC) codes

General Chemical Engineering
Electrochemistry

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10.1016/j.electacta.2018.08.147

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title = "Highly conductive and stable hybrid ionic cross-linked sulfonated PEEK for fuel cell",

abstract = "An ideal proton exchange membrane for fuel-cell application should possess excellent dimensional stability, high ionic conductivity and inexpensiveness. Introducing cross-links into the polymer structures is a popular strategy to alleviate the tradeoff between swelling ratio and ionic conductivity of high ion exchange capacity proton exchange membranes. However, the cross-links in these membranes will block the transport of H+, resulting in unfavorable decrease of conductivity. Here we report a systematic study of acSPEEK-Sx membranes with alkyl chain attached ionic cross-links to demonstrate how the unique cross-links can improve both the conductivity and swelling behavior of the materials. Compared to the conventional SPEEK, in addition to high anti-oxidative stability, the ionic conductivity and swelling behavior of the acSPEEK-Sx samples are significantly improved. A high proton conductivity of 101.2 mS cm−1 and a low swelling degree of 15.0% are observed in the acSPEEK-S6 membrane at the temperature of 80 °C. Based on the high-performance acSPEEK-S6 sample, a peak power density of 750 mW cm−2 is achieved at 60 °C, which is similar or superior to those of Nafion 112 (710 mW cm−2) under the same measurement conditions.",

author = "Juanjuan Han and Ying Wu and Jing Pan and Yanqiu Peng and Ying Wang and Chen Chen and Qiyun Pan and Bo Xie and Nian Zhao and Yu Wang and Juntao Lu and Li Xiao and Lin Zhuang",

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doi = "10.1016/j.electacta.2018.08.147",

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T1 - Highly conductive and stable hybrid ionic cross-linked sulfonated PEEK for fuel cell

AU - Han, Juanjuan

AU - Wu, Ying

AU - Pan, Jing

AU - Peng, Yanqiu

AU - Wang, Ying

AU - Chen, Chen

AU - Pan, Qiyun

AU - Xie, Bo

AU - Zhao, Nian

AU - Wang, Yu

AU - Lu, Juntao

AU - Xiao, Li

AU - Zhuang, Lin

PY - 2018/11/20

Y1 - 2018/11/20

N2 - An ideal proton exchange membrane for fuel-cell application should possess excellent dimensional stability, high ionic conductivity and inexpensiveness. Introducing cross-links into the polymer structures is a popular strategy to alleviate the tradeoff between swelling ratio and ionic conductivity of high ion exchange capacity proton exchange membranes. However, the cross-links in these membranes will block the transport of H+, resulting in unfavorable decrease of conductivity. Here we report a systematic study of acSPEEK-Sx membranes with alkyl chain attached ionic cross-links to demonstrate how the unique cross-links can improve both the conductivity and swelling behavior of the materials. Compared to the conventional SPEEK, in addition to high anti-oxidative stability, the ionic conductivity and swelling behavior of the acSPEEK-Sx samples are significantly improved. A high proton conductivity of 101.2 mS cm−1 and a low swelling degree of 15.0% are observed in the acSPEEK-S6 membrane at the temperature of 80 °C. Based on the high-performance acSPEEK-S6 sample, a peak power density of 750 mW cm−2 is achieved at 60 °C, which is similar or superior to those of Nafion 112 (710 mW cm−2) under the same measurement conditions.

AB - An ideal proton exchange membrane for fuel-cell application should possess excellent dimensional stability, high ionic conductivity and inexpensiveness. Introducing cross-links into the polymer structures is a popular strategy to alleviate the tradeoff between swelling ratio and ionic conductivity of high ion exchange capacity proton exchange membranes. However, the cross-links in these membranes will block the transport of H+, resulting in unfavorable decrease of conductivity. Here we report a systematic study of acSPEEK-Sx membranes with alkyl chain attached ionic cross-links to demonstrate how the unique cross-links can improve both the conductivity and swelling behavior of the materials. Compared to the conventional SPEEK, in addition to high anti-oxidative stability, the ionic conductivity and swelling behavior of the acSPEEK-Sx samples are significantly improved. A high proton conductivity of 101.2 mS cm−1 and a low swelling degree of 15.0% are observed in the acSPEEK-S6 membrane at the temperature of 80 °C. Based on the high-performance acSPEEK-S6 sample, a peak power density of 750 mW cm−2 is achieved at 60 °C, which is similar or superior to those of Nafion 112 (710 mW cm−2) under the same measurement conditions.

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EP - 361

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Highly conductive and stable hybrid ionic cross-linked sulfonated PEEK for fuel cell

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