Journal
JOURNAL OF ENERGY STORAGE
Volume 57, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.est.2022.106201
Keywords
Aqueous organic redox flow batteries; Sulfonated poly(ether ether ketone); Nafion; Membranes pre-treatment; Electrochemistry
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Aqueous organic redox flow batteries (AORFBs) were studied using pre-treated or non-pre-treated sulfonated poly(ether ether ketone), SPEEK, membranes and compared with Nafion (R) 115 membrane. It was found that the cells using the non-pre-treated SPEEK membrane showed higher performance and capacity retention. The study highlights the potential of using inexpensive membranes and low-cost active materials in AORFBs.
Aqueous organic redox flow batteries (AORFBs) based on tryptanthrin sulfonic acid (TRYP-SO3H) or alizarin red S (ARS) as anolytes and 4,5-dihydroxy-1,3-benzenedisulfonic acid disodium salt monohydrate (BADS) as cath-olyte, were studied in acidic medium, using pre-treated or non-pre-treated sulfonated poly(ether ether ketone), SPEEK, membranes and further compared with the performance obtained with a commercial Nafion (R) 115 membrane. The cell tests using the non-pre-treated SPEEK membrane presented higher performance and capacity retention than that of the cells using the pre-treated Nafion membrane. The study highlights the great potential of using inexpensive membranes without pre-treatment and low-cost active materials for application in AORFBs.
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