Volatilized Molten Salts: An Alternative Avenue for Synthesizing Single-Phase Perovskites

Levitas, Benjamin; Nikiforov, Alexey; Gopalan, Srikanth

doi:10.1021/acs.inorgchem.2c00593

Volatilized Molten Salts: An Alternative Avenue for Synthesizing Single-Phase Perovskites

Journal Article · Fri Apr 22 00:00:00 EDT 2022 · Inorganic Chemistry

DOI:https://doi.org/10.1021/acs.inorgchem.2c00593· OSTI ID:1975762

^[1]; Nikiforov, Alexey ^[2]; Gopalan, Srikanth ^[2]

Boston University, Brookline, MA (United States); Boston University
Boston University, Brookline, MA (United States); Boston University, MA (United States)

Single phase La_0.8Sr_0.2MnO₃ (LSM) and core-shell La_0.6Sr_0.4Co_0.2Fe_0.8O₃(LSCF)-LSM have been synthesized using a volatilized mol-ten salt synthesis (vMSS) method for the first time with a LiCl-KCl eutectic. While deleterious to LSM formation when the MSS takes place in the liquid phase, LiCl-KCl eutectic successfully facilitates LSM formation when volatilized. Specifically, KCl evaporates before LiCl and promotes formation of LSM via the gaseous phase. As time progresses, LiCl volatilizes and contributes negatively to Sr retention in the perovskite phase in accordance with Lux-Flood chemistry and to product phase purity. The vMSS is therefore a way to obviate the more immediate restrictions of Lux-Flood chemistry in the liquid phase. LiCl-KCl eutectic can also be used to successfully synthesis core-shell LSCF-LSM nanoparticles in times as short as 1 hour at 600 °C. These results demonstrate the surprising versatility and flexibility of the MSS method to synthesize numerous potential energy relevant materials with greater ease than previously thought.

View Accepted Manuscript (DOE)

Research Organization:: Boston University, MA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FE0031205

OSTI ID:: 1975762

Journal Information:: Inorganic Chemistry, Journal Name: Inorganic Chemistry Journal Issue: 18 Vol. 61; ISSN 0020-1669

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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