Open AccessReversible Electrochemical Intercalation and Deintercalation of Fluoride Ions into Host Lattices with Schafarzikite‐Type Structure
Author(s) -
Nowroozi Mohammad Ali,
de Laune Benjamin,
Clemens Oliver
Publication year - 2018
Publication title -
chemistryopen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 29
ISSN - 2191-1363
DOI - 10.1002/open.201800106
Subject(s) - fluoride , electrochemistry , reactivity (psychology) , intercalation (chemistry) , inorganic chemistry , fluorine , ion , crystal structure , chemistry , materials science , crystallography , organic chemistry , electrode , medicine , alternative medicine , pathology
Abstract Herein, we report the successful electrochemical fluorination and defluorination of schafarzikite‐type compounds with the composition Fe 0.5 M 0.5 Sb 2 O 4 (M=Mg or Co). We show that electrochemical methods can present a more controllable and less environmentally damaging route for fluorinating compounds in contrast to traditional methods that involve heating samples in F 2 ‐rich atmospheres. The reactivity of the host lattices with fluoride during electrochemical fluorination makes this material an interesting candidate for fluoride‐ion battery applications. However, deleterious side reactions with the conductive carbon matrix during fluorination suggests to the contrary. Regardless of the side reactions, the schafarzikite structure was found to be an alternative reversible host lattice for fluoride incorporation and removal in addition to the previously reported Ruddlesden–Popper‐type compounds.