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Exploration of the high temperature phase evolution of electrochemically modified Sc2(WO4)3via potassium discharge

Liu, Junnan; Haworth, Abby R.; Johnston, Karen E.; Goonetilleke, Damian; Sharma, Neeraj

Exploration of the high temperature phase evolution of electrochemically modified Sc2(WO4)3via potassium discharge Thumbnail


Authors

Junnan Liu

Abby R. Haworth

Damian Goonetilleke

Neeraj Sharma



Abstract

The activation of Sc2(WO4)3via electrochemical discharge against potassium metal is investigated, as well as the subsequent thermal evolution of Sc2(WO4)3. On subsequent heating from 100 to 623 K the discharged electrode exhibits essentially the same thermal expansion as that of the pure powder. Between 673 and 973 K a trigonal K2WO4-type phase (P[3 with combining macron]m1) is formed. Variable-temperature X-ray diffraction data indicates that upon heating from 923 K–1023 K, this phase has a thermal expansion coefficient of −1.90(10) × 10−4 K−1.

Citation

Liu, J., Haworth, A. R., Johnston, K. E., Goonetilleke, D., & Sharma, N. (2019). Exploration of the high temperature phase evolution of electrochemically modified Sc2(WO4)3via potassium discharge. Inorganic Chemistry Frontiers, 6(10), 2718-2726. https://doi.org/10.1039/c9qi00699k

Journal Article Type Article
Acceptance Date Aug 9, 2019
Publication Date Oct 1, 2019
Deposit Date Sep 16, 2019
Publicly Available Date Aug 9, 2020
Journal Inorganic chemistry frontiers
Print ISSN 2052-1553
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 6
Issue 10
Pages 2718-2726
DOI https://doi.org/10.1039/c9qi00699k

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