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Thin Reinforced Anion-Exchange Membranes for Non-Aqueous Redox Flow Battery Employing Fe/Co-Metal Complex Redox Species.
- Source :
- Batteries; Jan2024, Vol. 10 Issue 1, p9, 18p
- Publication Year :
- 2024
-
Abstract
- Non-aqueous redox flow batteries (NARFBs) have been attracting much attention because they can significantly increase power and energy density compared to conventional RFBs. In this study, novel pore-filled anion-exchange membranes (PFAEMs) for application to a NAPFB employing metal polypyridyl complexes (i.e., Fe(bpy)<subscript>3</subscript><superscript>2+</superscript>/Fe(bpy)<subscript>3</subscript><superscript>3+</superscript> and Co(bpy)<subscript>3</subscript><superscript>2+</superscript>/Co(bpy)<subscript>3</subscript><superscript>3+</superscript>) as the redox species are successfully developed. A porous polyethylene support with excellent solvent resistance and mechanical strength is used for membrane fabrication. The PFAEMs are prepared by filling an ionic liquid monomer containing an imidazolium group and a crosslinking agent into the pores of the support film and then performing in situ photopolymerization. As a result, the prepared membranes exhibit excellent mechanical strength and stability in a non-aqueous medium as well as high ion conductivity. In addition, a low crossover rate for redox ion species is observed for the prepared membranes because they have relatively low swelling characteristics in non-aqueous electrolyte solutions and low affinity for the metal-complex redox species compared to a commercial membrane. Consequently, the PFAEM is revealed to possess superior battery performance than a commercial membrane in the NARFB tests, showing high energy efficiency of about 85% and stable operation for 100 cycles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 23130105
- Volume :
- 10
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Batteries
- Publication Type :
- Academic Journal
- Accession number :
- 175050994
- Full Text :
- https://doi.org/10.3390/batteries10010009