Alkaline Quinone Flow Battery with Long Lifetime at pH 12
By David G. Kwabi, Kaixiang Lin, Yunlong Ji, Emily F. Kerr, M. Goulet, Diana Porcellinis, Daniel P. Tabor, Daniel A. Pollack, Alán Aspuru-Guzik, R. Gordon and 1 more. Joule, 2018
359 citations recorded by the source corpus.
Summary We demonstrate a long-lifetime, aqueous redox-flow battery that can operate at a pH as low as 12 while maintaining an open-circuit voltage of over 1 V. We functionalized 2,6-dihydroxyanthraquinone (2,6-DHAQ) with highly alkali-soluble carboxylate terminal groups. The resulting negative electrolyte material 4,4′-((9,10-anthraquinone-2,6-diyl)dioxy)dibutyrate (2,6-DBEAQ) was six times more soluble than 2,6-DHAQ at pH 12. Symmetric cell cycling with 2,6-DBEAQ on both sides of the cell demonstrates a capacity fade rate of
Subfields: Automotive Engineering, Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/4bb421f7a3555755212c221cf31e996277948bbc
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In Electrical and Electronic Engineering
Citations in the corpus
- Redox flow batteries: Status and perspective towards sustainable stationary energy storage (2021, methodology): “More stable DHAQ derivatives, 2,6-DBEAQ [97] and 2,6-DPPEAQ [98] were efficiently employed in milder pH media, 12 and 9 respectively, decreasing the degradation rate (0.001% cycle − 1 ) of anthraqui-nones (Table 1, entries 3 – 4).”