Back to Search
Start Over
Asymmetric cycling of vanadium redox flow batteries with a poly(arylene piperidinium)-based anion exchange membrane
- Publication Year :
- 2021
- Publisher :
- KTH, Tillämpad elektrokemi, 2021.
-
Abstract
- The potential application of a 50 μm thick anion exchange membrane prepared based on poly(terphenyl piperidinium-co-trifluoroacetophenone) (PTPT) is investigated for vanadium redox flow batteries (VRFBs). The PTPT exhibits a considerably lower vanadium permeation than Nafion 212. Therefore, the self-discharge duration of the VRFB based on PTPT is much longer than the VRFB based on Nafion 212. Besides, PTPT shows oxidative stability almost as good as Nafion 212 during immersion in an ex-situ immersion test for more than 400 h. Comparing the VRFB performance when symmetric and asymmetric electrolyte volumes are used yields interesting results. The results show that asymmetric cycling is more effective and efficient for the VRFB assembled with PTPT than Nafion 212 as the capacity fade of 0.03% cycle−1, and the highest coulombic efficiency of 98.8% is attained. Furthermore, the color change of the membrane during cycling can be reversed using a straightforward post-treatment method. QC 20210326
- Subjects :
- Materials science
Poly (arylene piperidinium)
Nafion
Energy Engineering and Power Technology
Vanadium
chemistry.chemical_element
02 engineering and technology
Electrolyte
010402 general chemistry
01 natural sciences
chemistry.chemical_compound
Kemiteknik
Vanadium redox flow battery
Electrical and Electronic Engineering
Physical and Theoretical Chemistry
Piperidinium cations
Ion exchange
Renewable Energy, Sustainability and the Environment
Arylene
Permeation
Chemical Engineering
021001 nanoscience & nanotechnology
Asymmetric cycling
0104 chemical sciences
Membrane
chemistry
Chemical engineering
0210 nano-technology
Faraday efficiency
Anion exchange membrane
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....d3266265befe46c9f9f16d73646415ea