Low‐temperature crystallization of La_0.15Sr_0.775TiO₃ using ionic liquids

Abstract

ReuseThis article is distributed under the terms of the Creative Commons Attribution (CC BY) licence. This licence allows you to distribute, remix, tweak, and build upon the work, even commercially, as long as you credit the authors for the original work. More information and the full terms of the licence here: https://creativecommons.org/licenses/ Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Accepted ArticleThis article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. AbstractThe n-type thermoelectric oxide La 0.15 Sr 0.775 TiO 3 (LST) has been synthesized at 600 °C using an ionic liquid method. The method uses the ionic liquid 1-ethyl 3-methylimidazolium acetate as the sole complexing agent: the lack of a second, carbon-rich template decreases the quantity of reduced intermediate phases which form during heating. By suppressing these phases, greatly reduced temperatures can be used to crystallize the perovskite LST phase, enabling the formation of nanoscale crystallites of the LST phase. These nanoparticles have the potential to be used to increase the figure of merit in n-type thermoelectric oxide devices.

An ionic liquid synthesis route for mixed-phase sodium titanate (Na2Ti3O7 and Na2Ti6O13) rods as an anode for sodium-ion batteries

“…They successfully synthesised a range of nanoscale complex oxides using this technique, including sodium potassium niobate, and importantly, demonstrated that aqueous solutions of precursor metal salts could be combined with alkoxide precursors (with an intermediate heating step to drive off water for the aqueous salts), without the detrimental and often violent formation of binary oxide materials. More recently, Mottram et al 31 showed that the addition of cellulose to this reaction was not needed, by showing that nanoscale templating in La-doped strontium titanate could be achieved using the ionic liquid alone, further simplifying the reaction mixture. Thus this non-aqueous synthesis route shows substantial promise for use in the synthesis of nanoscale titanate materials.…”