Volume 135, Issue 41 e202311509
Forschungsartikel

Durable Multiblock Poly(biphenyl alkylene) Anion Exchange Membranes with Microphase Separation for Hydrogen Energy Conversion

Yichang Ma

Yichang Ma

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 China

These authors contributed equally to this work.

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Dr. Chuan Hu

Dr. Chuan Hu

Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763 Republic of Korea

These authors contributed equally to this work.

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Guiqin Yi

Guiqin Yi

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 China

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Zhangtang Jiang

Zhangtang Jiang

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 China

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Dr. Xiangyu Su

Dr. Xiangyu Su

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 China

Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, 361102 China

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Prof. Qinglin Liu

Prof. Qinglin Liu

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 China

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Dr. Ju Yeon Lee

Dr. Ju Yeon Lee

Hydrogen and Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792 Republic of Korea

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Dr. So Young Lee

Dr. So Young Lee

Hydrogen and Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792 Republic of Korea

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Prof. Young Moo Lee

Corresponding Author

Prof. Young Moo Lee

Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763 Republic of Korea

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Prof. Qiugen Zhang

Corresponding Author

Prof. Qiugen Zhang

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 China

Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, 361102 China

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First published: 30 August 2023
Citations: 3

Abstract

Anion exchange membrane fuel cells (AEMFCs) and water electrolysis (AEMWE) show great application potential in the field of hydrogen energy conversion technology. However, scalable anion exchange membranes (AEMs) with desirable properties are still lacking, which greatly hampers the commercialization of this technology. Herein, we propose a series of novel multiblock AEMs based on ether-free poly(biphenyl ammonium-b-biphenyl phenyl)s (PBPA-b-BPPs) that are suitable for use in high performance AEMFC and AEMWE systems because of their well-formed microphase separation structures. The developed AEMs achieved outstanding OH conductivity (162.2 mS cm−1 at 80 °C) with a low swelling ratio, good alkaline stability, and excellent mechanical durability (tensile strength >31 MPa and elongation at break >147 % after treatment in 2 M NaOH at 80 °C for 3750 h). A PBPA-b-BPP-based AEMFC demonstrated a remarkable peak power density of 2.41 W cm−2 and in situ durability for 330 h under 0.6 A cm−2 at 70 °C. An AEMWE device showed a promising performance (6.25 A cm−2 at 2 V, 80 °C) and outstanding in situ durability for 3250 h with a low voltage decay rate (<28 μV h−1). The newly developed PBPA-b-BPP AEMs thus show great application prospects for energy conversion devices.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

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

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