Keyword search (4,164 papers available)

"Gordon RG" Authored Publications:

Title Authors PubMed ID
1 In situ electrochemical recomposition of decomposed redox-active species in aqueous organic flow batteries Jing Y; Zhao EW; Goulet MA; Bahari M; Fell EM; Jin S; Davoodi A; Jónsson E; Wu M; Grey CP; Gordon RG; Aziz MJ; 35710986
ENCS

 

Title:In situ electrochemical recomposition of decomposed redox-active species in aqueous organic flow batteries
Authors:Jing YZhao EWGoulet MABahari MFell EMJin SDavoodi AJónsson EWu MGrey CPGordon RGAziz MJ
Link:https://pubmed.ncbi.nlm.nih.gov/35710986/
DOI:10.1038/s41557-022-00967-4
Publication:Nature chemistry
Keywords:
PMID:35710986 Category: Date Added:2022-06-17
Dept Affiliation: ENCS
1 Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA.
2 Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK.
3 Magnetic Resonance Research Center, Institute for Molecules and Materials, Radboud University Nijmegen, Nijmegen, the Netherlands.
4 John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.
5 Department of Chemical and Materials Engineering, Concordia University, Montreal, Quebec, Canada.
6 Materials and Metallurgical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad (FUM), Mashhad, Iran.
7 Sichuan University-Pittsburgh Institute, Sichuan University, Chengdu, China.
8 Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK. cpg27@cam.ac.uk.
9 Department of Chemistry and Chemical

Description:

Aqueous organic redox flow batteries offer a safe and potentially inexpensive solution to the problem of storing massive amounts of electricity produced from intermittent renewables. However, molecular decomposition represents a major barrier to commercialization-and although structural modifications can improve stability, it comes at the expense of synthetic cost and molecular weight. Now, utilizing 2,6-dihydroxy-anthraquinone (DHAQ) without further structural modification, we demonstrate that the regeneration of the original molecule after decomposition represents a viable route to achieve low-cost, long-lifetime aqueous organic redox flow batteries. We used in situ (online) NMR and electron paramagnetic resonance, and complementary electrochemical analyses to show that the decomposition compound 2,6-dihydroxy-anthrone (DHA) and its tautomer, 2,6-dihydroxy-anthranol (DHAL) can be recomposed to DHAQ electrochemically through two steps: oxidation of DHA(L)2- to the dimer (DHA)24- by one-electron transfer followed by oxidation of (DHA)24- to DHAQ2- by three-electron transfer per DHAQ molecule. This electrochemical regeneration process also rejuvenates the positive electrolyte-rebalancing the states of charge of both electrolytes without introducing extra ions.





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