An overview of hydroxy-based polyanionic cathode insertion materials for metal-ion batteries

Abstract

Rechargeable batteries based on Li-ion and post Li-ion chemistry have come a long way since their inception in early 1980s. The last four decades have witnessed steady development and discovery...

Crystal and Magnetic Structures of Monoclinic FeOHSO4

“…The basic iron sulfate, or iron hydroxysulfate, FeOHSO 4 has been known for many decades but recently received renewed interest as a cathode material after it was shown to reversibly intercalate up to ∼1 Li per formula unit. , The presence of a hydroxyl group (OH – ) renders structural and chemical stability against moisture attack in this hydroxysulfate cathode . Its good electrochemical performance was further demonstrated in a study of the Li x FeSO 4 F 1– y (OH) y (0.35 < y < 1) system .…”

“…2,3 The presence of a hydroxyl group (OH − ) renders structural and chemical stability against moisture attack in this hydroxysulfate cathode. 4 Its good electrochemical performance was further demonstrated in a study of the Li x FeSO 4 F 1−y (OH) y (0.35 < y < 1) system. 5 However, the crystal structure characterization of FeOHSO 4 remained incomplete.…”