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Poly(carbazole)-based anion-conducting materials with high performance and durability for energy conversion devices

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Title
Poly(carbazole)-based anion-conducting materials with high performance and durability for energy conversion devices
Author(s)
Cha, MS; Ji Eun Park; Sungjun Kim; Han, SH; Shin, SH; Yang, SH; Kim, TH; Yu, DM; So, SY; Hong, YT; Yoon, SJ; Oh, SG; Sun Young Kang; Kim, OH; Park, HS; Bae, B; Yung-Eun Sung; Yong-Hun Cho; Lee, JY
Subject
MEMBRANE FUEL-CELLS, ; EXCHANGE MEMBRANE, ; ALKALINE STABILITY, ; MULTIBLOCK COPOLYMERS, ; CHEMICAL-STABILITY, ; WATER, ; BLOCK, ; POLYAROMATICS, ; IONOMERS, ; CATALYST
Publication Date
2020-10
Journal
ENERGY & ENVIRONMENTAL SCIENCE, v.13, no.10, pp.3633 - 3645
Publisher
ROYAL SOC CHEMISTRY
Abstract
© The Royal Society of Chemistry 2020. Anion conducting polymers (ACPs) are essential materials for alkaline electrochemical energy technology such as anion-exchange membrane fuel cells (AEMFCs) and water electrolysers (AEMWEs). The aforementioned polymers are promising alternatives for proton exchange membrane-based systems due to the possibility of using platinum group metal-free electrocatalysts. However, there are still no reliable ACPs possessing the desired performance and stability, which is a major challenge for developing alkaline energy systems. Herein, we highlight an anion-exchange membrane and ionomer based on quaternised poly-carbazole (QPC-TMA) with a rigid ether-free and curved backbone structure comprised of carbazole monomers. The developed ACP exhibits excellent ionic conductivity, as well as chemical and mechanical stability. Moreover, the AEMFC usingQPC-TMAshows excellent performance (1.61 W cm(-2)) compared with the other best-performing AEMFCs. In addition, the AEMWE usingQPC-TMAdemonstrates outstanding stability and state-of-the-art performance (3.5 A cm(-2)at 1.9 V), which is the first report of an AEMWE that outperforms the best-performing proton-exchange membrane water electrolysers
URI
https://pr.ibs.re.kr/handle/8788114/7575
DOI
10.1039/d0ee01842b
ISSN
1754-5692
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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