Poly(carbazole)-based anion-conducting materials with high performance and durability for energy conversion devices
- Authors
- Cha, Min Suc; Park, Ji Eun; Kim, Sungjun; Han, Seung-Hui; Shin, Sang-Hun; Yang, Seok Hwan; Kim, Tae-Ho; Yu, Duk Man; So, Soonyong; Hong, Young Taik; Yoon, Sang Jun; Oh, Seong-Geun; Kang, Sun Young; Kim, Ok-Hee; Park, Hyun S.; Bae, Byungchan; Sung, Yung-Eun; Cho, Yong-Hun; Lee, Jang Yong
- Issue Date
- Oct-2020
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- ENERGY & ENVIRONMENTAL SCIENCE, v.13, no.10, pp.3633 - 3645
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENERGY & ENVIRONMENTAL SCIENCE
- Volume
- 13
- Number
- 10
- Start Page
- 3633
- End Page
- 3645
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/32741
- DOI
- 10.1039/d0ee01842b
- ISSN
- 1754-5692
- Abstract
- 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.
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