You are here

A polyoxometalate flow battery

TitleA polyoxometalate flow battery
Publication TypeJournal Article
Year of Publication2013
AuthorsPratt, HD, Hudak, NS, Fang, XK, Anderson, TM
JournalJournal of Power Sources
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

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.

Custom 1

Nanoscale and Ultrafast