Synthesis and electrochemical performance of Li(2)Co(1−)(x)M(x)PO(4)F (M = Fe, Mn) cathode materials

In the search for high-energy materials, novel 3D-fluorophosphates, Li(2)Co(1−)(x)Fe(x)PO(4)F and Li(2)Co(1−)(x)Mn(x)PO(4)F, have been synthesized. X-ray diffraction and scanning electron microscopy have been applied to analyze the structural and morphological features of the prepared materials. Bot...

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Detalles Bibliográficos
Autores principales: Khasanova, Nellie R, Drozhzhin, Oleg A, Fedotov, Stanislav S, Storozhilova, Darya A, Panin, Rodion V, Antipov, Evgeny V
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2013
Materias:
Full Research Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3869263/
https://www.ncbi.nlm.nih.gov/pubmed/24367755
http://dx.doi.org/10.3762/bjnano.4.97
Descripción
Sumario:In the search for high-energy materials, novel 3D-fluorophosphates, Li(2)Co(1−)(x)Fe(x)PO(4)F and Li(2)Co(1−)(x)Mn(x)PO(4)F, 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, Li(2)Co(1−)(x)Fe(x)PO(4)F and Li(2)Co(1−)(x)Mn(x)PO(4)F, exhibited narrow ranges of solid solutions: x ≤ 0.3 and x ≤ 0.1, respectively. The Li(2)Co(0.9)Mn(0.1)PO(4)F 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 LiBF(4)/TMS electrolyte. Galvanostatic measurements along with cyclic voltammetry supported a single-phase de/intercalation mechanism in the Li(2)Co(0.9)Mn(0.1)PO(4)F material.

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