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Novel poly(carbazole-butanedione) anion exchange membranes constructed by obvious microphase separation for fuel cells.
- Source :
-
International Journal of Hydrogen Energy . Sep2022, Vol. 47 Issue 75, p32262-32272. 11p. - Publication Year :
- 2022
-
Abstract
- To develop anion exchange membranes with excellent chemical stability and high performance. A series of quaternary ammonium functionalized (hydrophilic) hydrophobic rigid poly (carbazole-butanedione) (HOCB-TMA-x) anion exchange membranes were prepared, where x represents the percentage content of hydrophobic unit octylcarbazole (OCB). Due to the introduction of hydrophobic rigid unit octylcarbazole and hexyl flexible side chain, the hydrophilic-hydrophobic microstructure of AEMs was developed. The AEMs exhibit excellent overall performance, specifically the low swelling ratio HOCB-TMA-30 membrane exhibits the highest OH− conductivity of 152.9 mS/cm at 80 °C. Furthermore, the ionic conductivity of AEM decreased by only 9.5% after 2250 h of immersion in 1 M NaOH. The maximum peak power density of a single cell with a current density of 4.38 A/cm2 at 80 °C was 1.85 W/cm2. [Display omitted] • A series of poly(carbazole-butanedione) AEMs were prepared. • The effect of hydrophobic unit on the performance of AEMs was investigated. • The membrane showed a maximum OH− conductivity of 152.9 mS/cm at 80 °C. • The introduction of hydrophobic unit improves the overall performance of AEMs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03603199
- Volume :
- 47
- Issue :
- 75
- Database :
- Academic Search Index
- Journal :
- International Journal of Hydrogen Energy
- Publication Type :
- Academic Journal
- Accession number :
- 159140603
- Full Text :
- https://doi.org/10.1016/j.ijhydene.2022.07.095