Synthesis and charge-discharge properties of LiF-NiO composite as a cathode material for Li-ion batteries

Multi-anionic and -cationic compounds: new high entropy materials for advanced Li-ion batteries

“…Because none of the late 3d transition metals (Mn, Co, Ni, Cu, Zn) has been reported to form oxyfluorides through soft chemistry or solid-state reaction routes, 35,36 ball-milling appears to be the most efficient way to prepare such solid solution phases. [37][38][39] Fig . 1a shows X-ray diffraction (XRD) patterns obtained on the as-prepared Li(HEO)F and a mixture of pristine HEO and LiF.…”

Electrochemically driven conversion reaction in fluoride electrodes for energy storage devices

“…72 In view of the advantage of oxyfluoride, more conductive MO (M = Fe, Mn, Ni, Co) precursors appear to enable the improvement of conversion kinetics when mixing or bonding with LiF. 70,[73][74][75] Most recently, Jung et al 70 developed a LiF-MnO conversion cathode with a dominant pseudocapacitive contribution (as high as 94%). The unusual electrochemistry is ascribed to a surface conversion mechanism realized by decorating nano-sized LiF on monoxide surface, which can cause a fast F absorption by MnO surface once reaction initiates.…”

Lithium manganese oxyfluoride as a new cathode material exhibiting oxygen redox

“…Other researchers have managed to access solid solution oxyfluoride Rocksalt phases by using higher ball-milling energies. In pioneering work by Hahn and Kobayashi and their respective co-workers, lithiated oxyfluoride materials were synthesised based on V [27][28][29] and Ni 30,31 ; two transition metals which undergo multiple valence state changes. However, these have involved prolonged reaction times of over 100 hrs and impurities introduced from abrasion of the milling jar medium.…”