Fluorinated Poly(aryl piperidinium) Membranes for Anion Exchange Membrane Fuel Cellsopen access
- Authors
- Wu, Xingyu; Chen, Nanjun; Hu, Chuan; Klok, Harm-Anton; Lee, Young Moo; Hu, Xile
- Issue Date
- Jun-2023
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- anion-exchange membranes; anion-exchange-membrane fuel cells; fluorination; microphase separation; poly(aryl piperidinium)
- Citation
- ADVANCED MATERIALS, v.35, no.26, pp.1 - 10
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED MATERIALS
- Volume
- 35
- Number
- 26
- Start Page
- 1
- End Page
- 10
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/192000
- DOI
- 10.1002/adma.202210432
- ISSN
- 0935-9648
- Abstract
- Anion-exchange-membrane fuel cells (AEMFCs) are a cost-effective alternative to proton-exchange-membrane fuel cells (PEMFCs). The development of high-performance and durable AEMFCs requires highly conductive and robust anion-exchange membranes (AEMs). However, AEMs generally exhibit a trade-off between conductivity and dimensional stability. Here, a fluorination strategy to create a phase-separated morphological structure in poly(aryl piperidinium) AEMs is reported. The highly hydrophobic perfluoroalkyl side chains augment phase separation to construct interconnected hydrophilic channels for anion transport. As a result, these fluorinated PAP (FPAP) AEMs simultaneously possess high conductivity (>150 mS cm(-1) at 80 degrees C) and high dimensional stability (swelling ratio <20% at 80 degrees C), excellent mechanical properties (tensile strength >80 MPa and elongation at break >40%) and chemical stability (>2000 h in 3 m KOH at 80 degrees C). AEMFCs with a non-precious Co-Mn spinel cathode using the present FPAP AEMs achieve an outstanding peak power density of 1.31 W cm(-2). The AEMs remain stable over 500 h of fuel cell operation at a constant current density of 0.2 A cm(-2).
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