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Fikile R. Brushett, John T. Vaughey and Andrew N. Jansen An All-Organic Non-aqueous Lithium-Ion Redox Flow Battery Advanced Energy Materials 2

Article first published online: 15 JUN 2012 | DOI: 10.1002/aenm.201200322

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A proof-of-principle non-aqueous lithium-ion flow battery is proposed based on 2,5-di-tert-butyl-1,4-bis(2-methoxyethoxy)benzene as a high-potential active species and a quinoxaline-derivative as a low-potential active species. Electrochemical measurements highlight that the choice of electrolyte and of substituent groups can have a significant impact on redox species performance. In initial cell tests, Coulombic and energy efficiencies are ∼70% and ∼37%, respectively, with major charge and discharge plateaus between 1.8–2.4 V and 1.7–1.3 V.

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