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Sulfonated graphene oxide/sulfonated poly (2,6‐ dimethyl – 1,4‐phenylene oxide) as a potential proton exchange membrane for iron air flow battery application.
- Source :
- Polymers for Advanced Technologies; Jun2023, Vol. 34 Issue 6, p2044-2056, 13p
- Publication Year :
- 2023
-
Abstract
- A series of proton exchange membranes (PEMs) of sulfonated poly(2,6‐dimethyl‐1,4‐phenylene oxide) (SPPO) with different sulfonated graphene oxide (SGO) (0, 0.25, 0.5, 0.75, 1.0, 1.5%) were prepared for possible application in Iron‐air/flow battery. The presence of SGO in the membrane improved the water uptake of all membranes prepared and decreased the swelling ratio. The SPPO/1% w/w SGO showed good properties with higher water uptake of 44.1%, water retention of 42.48% and swelling ratio of 21.4% at 25°C. However, the 0.75% SGO exhibited the highest proton conductivity of 0.98 S/cm and better dispersion, elemental distribution, and morphology. In addition, SGO improved the thermal stability of all composite membranes. The chemical stability of all membranes remained good after 7 days in a 1 M HCL solution. The SPPO/0.75%w/w SGO showed increased proton conductivity when degradation properties were evaluated. Compared to Nafion 117, all composites showed lower iron crossover. Nafion had a high permeability of 3.03 × 10−7 cm−2/s, which is 75% higher than the 7.6 × 10−8 cm−2/s of SPPO/SGO‐1.5% and 52% higher than the 1.46 × 10−7 cm−2/s of SPPO/SGO‐0.75%. The results indicate that SGO is a good inorganic filler for the composite proton exchange membrane and stable enough for possible application in an iron‐air/flow battery. [ABSTRACT FROM AUTHOR]
- Subjects :
- GRAPHENE oxide
FLOW batteries
AIR flow
IRON
PROTON conductivity
POLYPHENYLENE oxide
Subjects
Details
- Language :
- English
- ISSN :
- 10427147
- Volume :
- 34
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Polymers for Advanced Technologies
- Publication Type :
- Academic Journal
- Accession number :
- 163191271
- Full Text :
- https://doi.org/10.1002/pat.6030