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

Authors
Cha, Min SucPark, Ji EunKim, SungjunHan, Seung-HuiShin, Sang-HunYang, Seok HwanKim, Tae-HoYu, Duk ManSo, SoonyongHong, Young TaikYoon, Sang JunOh, Seong-GeunKang, Sun YoungKim, Ok-HeePark, Hyun S.Bae, ByungchanSung, Yung-EunCho, Yong-HunLee, Jang Yong
Issue Date
2020-10-01
Publisher
Royal Society of Chemistry
Citation
Energy & Environmental Science, v.13, no.10, pp.3633 - 3645
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.
Keywords
MEMBRANE FUEL-CELLS; EXCHANGE MEMBRANE; ALKALINE STABILITY; MULTIBLOCK COPOLYMERS; CHEMICAL-STABILITY; WATER; BLOCK; POLYAROMATICS; IONOMERS; CATALYST; MEMBRANE FUEL-CELLS; EXCHANGE MEMBRANE; ALKALINE STABILITY; MULTIBLOCK COPOLYMERS; CHEMICAL-STABILITY; WATER; BLOCK; POLYAROMATICS; IONOMERS; CATALYST; 수전해; 수소; 전기화학; 연료전지
ISSN
1754-5692
URI
https://pubs.kist.re.kr/handle/201004/118014
DOI
10.1039/d0ee01842b
Appears in Collections:
KIST Article > 2020
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE