A polyoxometalate flow battery

TitleA polyoxometalate flow battery
Publication TypeJournal Article
Year of Publication2013
AuthorsPratt HD, Hudak NS, Fang XK, Anderson TM
Journal TitleJournal of Power Sources
Volume236
Pages259-264
Date Published08
Type of ArticleArticle
ISBN Number0378-7753
Accession NumberWOS:000319301700035
Keywordschemistry, complexes, energy-storage, Flow battery, heteropoly, keggin, MIXED-VALENCE, polyoxometalates, PROGRESS, research-and-development, TUNGSTEN, vanadium, w-183 nmr
Abstract

A redox flow battery utilizing two, three-electron polyoxometalate redox couples ((SiV3W9O407-)-W-V-O-VI/(SiV3W9O4010-)-W-IV-O-VI and (SiV3W9O4010-)-W-IV-O-VI/(SiV3W3W6O4013-)-W-IV-W-V-O-VI) was investigated for use in stationary storage in either aqueous or non-aqueous conditions. The aqueous battery had coulombic efficiencies greater than 95% with relatively low capacity fading over 100 cycles. Infrared studies showed there was no decomposition of the compound under these conditions. The non-aqueous analog had a higher operating voltage but at the expense of coulombic efficiency. The spontaneous formation of these clusters by self-assembly facilitates recovery of the battery after being subjected to reversed polarity. Polyoxometalates offer a new approach to stationary storage materials because they are capable of undergoing multi-electron reactions and are stable over a wide range of pH values and temperatures. Published by Elsevier B.V.

URL<Go to ISI>://WOS:000319301700035
DOI10.1016/j.jpowsour.2013.02.056