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End-group crosslinked hexafluorobenzene contained anion exchange membranes.
- Source :
-
International Journal of Hydrogen Energy . Nov2021, Vol. 46 Issue 80, p39921-39931. 11p. - Publication Year :
- 2021
-
Abstract
- A kind of anion exchange membranes (AEMs) with C C bond end-group crosslinked structure was synthesized successfully. Unlike the traditional aliphatic AEMs, the AEMs were prepared in this work by a strategy to realize the C C bond thermal end-group crosslinking reaction, exhibiting an obvious microphase separation structure and a suitable dimensional stability. The well-defined ion channels constructed in the AEMs guarantee the fast OH− conduction, as confirmed via physical and chemical characterization. The conductivity was dramatically enhanced due to the effective ion channels and increased ion exchange capacity. Among the as-prepared AEMs, the PHFB-VBC-DQ-80% AEM has a conductivity of 135.80 mS cm−1 at 80 °C. The single cell based on PHFB-VBC-DQ-80% can achieve a power density of 141.7 mW cm−2 at a current density of 260 mA cm−2 at 80 °C. The AEMs show good thermal stability verified by a thermogravimetric analyzer (TGA). Furthermore, the ionic conductivity of PHFB-VBC-DQ-80% only decreased by 7.1% after being soaked in a 2 M NaOH solution at 80 °C for 500 h. [Display omitted] • C C bond was introduced into an AEM to form end-group crosslinked structure. • The AEMs possess an obvious microphase separation structure. • PHFB-VBC-DQ-80% has a conductivity of 135.80 mS cm−1 at 80 °C. • The AEMs with C C crosslinker possess good chemical stability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03603199
- Volume :
- 46
- Issue :
- 80
- Database :
- Academic Search Index
- Journal :
- International Journal of Hydrogen Energy
- Publication Type :
- Academic Journal
- Accession number :
- 153496378
- Full Text :
- https://doi.org/10.1016/j.ijhydene.2021.09.223