Lithium Intercalation into the Jarosite-type Hydroxysulfate: A Topotactic Reversible Reaction from a Crystalline Phase to an Inorganic Polymer-like Structure
Source abstract
Abstract
Insertion of lithium into the jarosite hydroxysulfate NaFe 3 (SO 4 ) 2 (OH) 6 leads to an amorphous phase Li 2+ x NaFe 3 (SO 4 ) 2 (OH) 6 (with 0 < x<0.5), through a biphasic mechanism. The latter phase exhibits reversible electrochemical lithium intercalation/deintercalation through a solid-solution-like process, leading back to the oxidized jarosite Li x NaFe 3 (SO 4 ) 2 (OH) 6 (with 0.3 < x < 0.6), with redox cycling at 2.82 V and a capacity of 110 mAh/g at C/20. This unique topotactic reaction between an amorphous and a well-crystallized phase is interpreted on the basis of the formation of an inorganic polymer.
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Research context
OpenAlex topics: Advancements in Battery Materials · Extraction and Separation Processes · Metal Extraction and Bioleaching
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratoire de Crystallographie et Sciences des Matériaux CRISMAT, ENSICAEN, Université de Caen, CNRS, 6 Bd Maréchal Juin, F-14050 Caen 4, France
Laboratoire Catalyse et Spectrochimie, ENSICAEN, Université de Caen, CNRS, 6 Bd Maréchal Juin, F-14050 Caen 4, France
Funding
Indo-French Centre for the Promotion of Advanced Research · European Regional Development Fund
References (18)
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