title: Synthesis and electrochemical performance of Li2Co1- x M x PO4F (M = Fe, Mn) cathode materials.
abstract: In the search for high-energy materials, novel 3D-fluorophosphates, Li2Co1- x Fe x PO4F and Li2Co1- x Mn x PO4F, have been synthesized. X-ray diffraction and scanning electron microscopy have been applied to analyze the structural and morphological features of the prepared materials. Both systems, Li2Co1- x Fe x PO4F and Li2Co1- x Mn x PO4F, exhibited narrow ranges of solid solutions: x ≤ 0.3 and x ≤ 0.1, respectively. The Li2Co0.9Mn0.1PO4F material demonstrated a reversible electrochemical performance with an initial discharge capacity of 75 mA·h·g(-1) (current rate of C/5) upon cycling between 2.5 and 5.5 V in 1 M LiBF4/TMS electrolyte. Galvanostatic measurements along with cyclic voltammetry supported a single-phase de/intercalation mechanism in the Li2Co0.9Mn0.1PO4F material.
authors.affiliation: Department of Chemistry, Moscow State University, Moscow 119991, Russia.
authors.forename: Nellie R
authors.initials: NR
authors.lastname: Khasanova
authors.affiliation: Department of Chemistry, Moscow State University, Moscow 119991, Russia.
authors.forename: Oleg A
authors.initials: OA
authors.lastname: Drozhzhin
authors.affiliation: Department of Chemistry, Moscow State University, Moscow 119991, Russia.
authors.forename: Stanislav S
authors.initials: SS
authors.lastname: Fedotov
authors.affiliation: Department of Chemistry, Moscow State University, Moscow 119991, Russia.
authors.forename: Darya A
authors.initials: DA
authors.lastname: Storozhilova
authors.affiliation: Department of Chemistry, Moscow State University, Moscow 119991, Russia.
authors.forename: Rodion V
authors.initials: RV
authors.lastname: Panin
authors.affiliation: Department of Chemistry, Moscow State University, Moscow 119991, Russia.
authors.forename: Evgeny V
authors.initials: EV
authors.lastname: Antipov
keywords: Li-ion batteries; energy related; fluorophosphates; high-energy cathode materials; high-voltage electrolyte; nanomaterials; reversible capacity