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

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
• Electronic 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
• Public URL: https://durham-repository.worktribe.com/output/1321391