Spacer-engineering construction of continuous proton transport networks for cardo poly(biphenyl indole) high-temperature proton exchange membranes

Chen, Sifan; Ma, Zhuang; Zhang, Jialin; Niu, Jianchun; Zhang, Shuomeng; Zhang, Qinghua; Chen, Shiyuan; Lu, Shanfu; Wang, Miao; He, Qinggang

doi:10.1039/d4ta02111h

J. Mater. Chem. A

2024

DOI: 10.1039/d4ta02111h

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Spacer-engineering construction of continuous proton transport networks for cardo poly(biphenyl indole) high-temperature proton exchange membranes

Sifan Chen,

Zhuang Ma,

Jialin Zhang

et al.

Abstract: Poly(biphenyl indole)-based membranes are designed for investigating the effect of side-chain engineering on the mechanism of manipulating proton transport.

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Cited by 3 publications

References 43 publications

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Patterned Ion‐Pair Membrane for High‐Temperature Proton‐Exchange Membrane Fuel Cells

Lee,

Oh,

Kim

et al. 2024

Small Structures

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Despite the many advantages of catalyst‐coated membranes (CCMs), there have been few studies of the use of CCMs to construct membrane‐electrode assemblies (MEAs) for high‐temperature polymer‐electrolyte membrane fuel cells (HT‐PEMFCs) using phosphoric acid (PA) doping. In this article, the use of membrane patterning to enable CCM to be utilized for HT‐PEMFCs is reported. A PA‐doped ion‐pair membrane and an electrode containing protonated phosphonic acid ionomers are employed to fabricate CCMs using the direct‐decal‐transfer method. A membrane with an inverted‐pyramid structure, created using solvent‐assisted patterning, further exploits the advantages of CCMs. The resulting CCM exhibits improved decal‐transfer efficiency, increased capillary infiltration of PA, and reduced PA loss during compression. The enlarged, interlocked, 3D structure increases the interfacial adhesion strength and the electrochemically active surface area compared to a conventional MEA with either a catalyst‐coated substrate or a flat CCM. Due to the morphological modification of the electrode, the patterned CCM also exhibits the lowest oxygen‐transport resistance among the MEAs. As a result of these enhancements, the patterned CCM achieves the high performance of 680 mW cm−2 at 160 °C in dry H2/air with low total Pt usage of 0.5 mg cm−2.

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Patterned Ion‐Pair Membrane for High‐Temperature Proton‐Exchange Membrane Fuel Cells

Lee,

Oh,

Kim

et al. 2024

Small Structures

View full text Add to dashboard Cite

show abstract

Quaternized poly(aryl imidazolium) containing bulky binaphthyl group as proton exchange membrane for high-temperature fuel cells

Guo,

Wang,

Chao

et al. 2024

Chemical Engineering Journal

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High-density quaternized polymer ionic liquid/polybenzimidazole cross-linked membrane achieves excellent acid stability

Wu,

Guan,

Zhang

et al. 2025

Journal of Membrane Science

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Spacer-engineering construction of continuous proton transport networks for cardo poly(biphenyl indole) high-temperature proton exchange membranes

Abstract: Poly(biphenyl indole)-based membranes are designed for investigating the effect of side-chain engineering on the mechanism of manipulating proton transport.

Cited by 3 publications

References 43 publications

Patterned Ion‐Pair Membrane for High‐Temperature Proton‐Exchange Membrane Fuel Cells

Patterned Ion‐Pair Membrane for High‐Temperature Proton‐Exchange Membrane Fuel Cells

Quaternized poly(aryl imidazolium) containing bulky binaphthyl group as proton exchange membrane for high-temperature fuel cells

High-density quaternized polymer ionic liquid/polybenzimidazole cross-linked membrane achieves excellent acid stability

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