Charge-Dependent Crossover in Aqueous Organic Redox Flow Batteries Revealed Using Online NMR Spectroscopy.
| Title: | Charge-Dependent Crossover in Aqueous Organic Redox Flow Batteries Revealed Using Online NMR Spectroscopy. |
|---|---|
| Authors: | Latchem EJ; Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Rd., Cambridge CB2 1EW, U.K.; Department of Materials Science, University of Cambridge, Charles Babbage Rd., Cambridge CB3 0FS, U.K.; Kress T; Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Rd., Cambridge CB2 1EW, U.K.; Klusener PAA; Shell Global Solutions International B.V., Energy Transition Campus, Grasweg 31, Amsterdam 1031 HW, Netherlands.; Kumar RV; Department of Materials Science, University of Cambridge, Charles Babbage Rd., Cambridge CB3 0FS, U.K.; Forse AC; Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Rd., Cambridge CB2 1EW, U.K. |
| Source: | The journal of physical chemistry letters [J Phys Chem Lett] 2024 Feb 08; Vol. 15 (5), pp. 1515-1520. Date of Electronic Publication: 2024 Feb 01. |
| Publication Type: | Journal Article |
| Language: | English |
| Journal Info: | Publisher: American Chemical Society Country of Publication: United States NLM ID: 101526034 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1948-7185 (Electronic) Linking ISSN: 19487185 NLM ISO Abbreviation: J Phys Chem Lett Subsets: MEDLINE; PubMed not MEDLINE |
| Imprint Name(s): | Original Publication: Washington, D.C. : American Chemical Society |
| Abstract: | Aqueous organic redox-flow batteries (AORFBs) are promising candidates for low-cost grid-level energy storage. However, their wide-scale deployment is limited by crossover of redox-active material through the separator membrane, which causes capacity decay. Traditional membrane permeability measurements do not capture all contributions to crossover in working batteries, including migration and changes in ion size and charge. Here we present a new method for characterizing crossover in operating AORFBs using online 1H NMR spectroscopy. By the introduction of a separate pump to decouple NMR and battery flow rates, this method opens a route to quantitative time-resolved monitoring of redox-flow batteries under real operating conditions. In this proof-of-concept study of a 2,6-dihydroxyanthraquinone (2,6-DHAQ)/ferrocyanide model system, we observed a doubling of the 2,6-DHAQ crossover during battery charging, which we attribute to migration effects. This new membrane testing methodology will advance our understanding of crossover and accelerate the development of improved redox-flow batteries. |
| References: | Phys Chem Chem Phys. 2015 Feb 7;17(5):3402-8. (PMID: 25529069); Nat Chem. 2022 Oct;14(10):1103-1109. (PMID: 35710986); J Magn Reson. 2023 Jun;351:107448. (PMID: 37099853); J Am Chem Soc. 2021 Feb 3;143(4):1885-1895. (PMID: 33475344); Chem Commun (Camb). 2022 Jan 27;58(9):1342-1345. (PMID: 34986212); Nature. 2020 Mar;579(7798):224-228. (PMID: 32123353); Nat Mater. 2020 Feb;19(2):195-202. (PMID: 31792424); Science. 2011 Nov 18;334(6058):928-35. (PMID: 22096188); Science. 2015 Sep 25;349(6255):1529-32. (PMID: 26404834); Nat Commun. 2022 Aug 12;13(1):4746. (PMID: 35961966); Chem Rev. 2020 Jul 22;120(14):6467-6489. (PMID: 32053366) |
| Grant Information: | MR/T043024/1 United Kingdom MRC_ Medical Research Council |
| Entry Date(s): | Date Created: 20240201 Latest Revision: 20250530 |
| Update Code: | 20260130 |
| PubMed Central ID: | PMC10860123 |
| DOI: | 10.1021/acs.jpclett.3c03482 |
| PMID: | 38299498 |
| Database: | MEDLINE |
Journal Article