Abstract
Barium ferrate material was coated with nanoparticulate thin films of SiO 2 and TiO 2 using sol–gel techniques, and was evaluated for use in both zinc-alkaline and lithium non-aqueous batteries. Iron(VI) content was monitored for ferrate materials stored under dry conditions and wetted with KOH and LiPF 6 electrolytes. Coated barium ferrate demonstrated improved stability relative to uncoated BaFeO 4. SiO 2 coated materials do not appear to be useful for either zinc alkaline or lithium non-aqueous systems at this time. TiO 2 coated materials demonstrated poor shelf life in alkaline electrolyte, but provided somewhat more favorable results in the lithium cells.
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