Scalable Synthesis of Tavorite LiFeSO4F and NaFeSO4F Cathode Materials

Single-phase tavorite, LiFeSO4F, is crystallized in tetraethylene glycol at 220 °C to give an electrochemically highly active material. This route obviates the need for expensive ionic liquids and can be extended to the synthesis of NaFeSO4F, whose structure solution, along with that of the parent framework FeSO4F, provides understanding of ion mobility. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.