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Realization of an Asymmetric Non‐Aqueous Redox Flow Battery through Molecular Design to Minimize Active Species Crossover and Decomposition
dc.contributor.authorShrestha, Anuska
dc.contributor.authorHendriks, Koen H.
dc.contributor.authorSigman, Mathew S.
dc.contributor.authorMinteer, Shelley D.
dc.contributor.authorSanford, Melanie S.
dc.date.accessioned2020-05-05T19:36:58Z
dc.date.availableWITHHELD_12_MONTHS
dc.date.available2020-05-05T19:36:58Z
dc.date.issued2020-04-24
dc.identifier.citationShrestha, Anuska; Hendriks, Koen H.; Sigman, Mathew S.; Minteer, Shelley D.; Sanford, Melanie S. (2020). "Realization of an Asymmetric Non‐Aqueous Redox Flow Battery through Molecular Design to Minimize Active Species Crossover and Decomposition." Chemistry – A European Journal 26(24): 5369-5373.
dc.identifier.issn0947-6539
dc.identifier.issn1521-3765
dc.identifier.urihttps://hdl.handle.net/2027.42/154972
dc.description.abstractThis communication presents a mechanism‐based approach to identify organic electrolytes for non‐aqueous redox flow batteries (RFBs). Symmetrical flow cell cycling of a pyridinium anolyte and a cyclopropenium catholyte resulted in extensive capacity fade due to competing decomposition of the pyridinium species. Characterization of this decomposition pathway enabled the rational design of next‐generation anolyte/catholyte pairs with dramatically enhanced cycling performance. Three factors were identified as critical for slowing capacity fade: (1) separating the anolyte–catholyte in an asymmetric flow cell using an anion exchange membrane (AEM); (2) moving from monomeric to oligomeric electrolytes to limit crossover through the AEM; and (3) removing the basic carbonyl moiety from the anolyte to slow the protonation‐induced decomposition pathway. Ultimately, these modifications led to a novel anolyte–catholyte pair that can be cycled in an AEM‐separated asymmetric RFB for 96 h with >95 % capacity retention at an open circuit voltage of 1.57 V.Applied molecular design! This study presents a mechanism‐based approach to the molecular design of electrolytes for implementation in an asymmetric non‐aqueous redox flow battery.
dc.publisherWiley Periodicals, Inc.
dc.subject.othernon-aqueous
dc.subject.othercrossover
dc.subject.otherredox flow batteries
dc.subject.otherasymmetric
dc.subject.otheranolyte decomposition
dc.titleRealization of an Asymmetric Non‐Aqueous Redox Flow Battery through Molecular Design to Minimize Active Species Crossover and Decomposition
dc.typeArticle
dc.rights.robotsIndexNoFollow
dc.subject.hlbsecondlevelChemistry
dc.subject.hlbtoplevelScience
dc.description.peerreviewedPeer Reviewed
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/154972/1/chem202000749-sup-0001-misc_information.pdf
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/154972/2/chem202000749.pdf
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/154972/3/chem202000749_am.pdf
dc.identifier.doi10.1002/chem.202000749
dc.identifier.sourceChemistry – A European Journal
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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