Journal
SOLID STATE SCIENCES
Volume 14, Issue 1, Pages 15-20Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solidstatesciences.2011.09.004
Keywords
Fluorosulphate; Cathode; Tavorite-like framework; Ionic conductivity; Battery
Funding
- French Ministere de l'Enseignement Superieur et de la Recherche
- Japan Society for the Promotion of Sciences (JSPS)
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Our work in metal fluorosulphate chemistry, which was triggered by the discovery of the tavorite-phase of LiFeSO4F, has unveiled many novel Li- and Na-based phases with desirable electrochemical and/or transport properties. Further exploring this rich crystal chemistry, we have synthesized the Na-based magnesium, copper and zinc fluorosulphates, which crystallise in the maxwellite (tavorite-like framework) structure just as their Fe and Co counterparts, which were previously reported. These phases show ionic conductivities in the range of similar to 10(-7) S cm(-1) or similar to 10(-11) S cm(-1) depending upon their synthesis process and no reversible electrochemical activity versus Na. (C) 2011 Elsevier Masson SAS. All rights reserved.
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