A new preparation method for a novel high voltage cathode material: LiNiVO4

NCUIR > Engineering College > National Central University Department of Chemical & Materials Engineering > journal & Dissertation > Item 987654321/26533

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Title:	A new preparation method for a novel high voltage cathode material: LiNiVO4
Authors:	Fey,GTK;Perng,W
Contributors:	化學工程與材料工程學系
Keywords:	LITHIUM INSERTION;SPINEL
Date:	1997
Issue Date:	2010-06-29 17:30:17 (UTC+8)
Publisher:	中央大學
Abstract:	A new preparation method for LiNiVO4 has been developed. LiNiVO4 can be readily obtained from the solid state reaction of LiNiO2 and V2O3 or V2O5 at 700 degrees C for 2 h in air. The quarternary Li-Ni-V-O reaction is strongly dependent on vanadium starting materials, reaction environment atmosphere, reactant stoichiometry and synthesis temperature. Individual particles of LiNiVO4 powders are well-formed crystallites shown clearly by scanning electron microscopy results to be in the shape of an octahedron. Powder X-ray diffraction studies of this crystalline material indicate that LiNiVO4 has an inverse spinel structure different from that of known cathode materials such as LT-LiCoO2 and LiMn2O4. The Li/LiNiVO4 cell can be charged and discharged at about 4.8 V versus metallic Li. To our knowledge, this is the Li intercalation reaction with the highest voltage known.
Relation:	MATERIALS CHEMISTRY AND PHYSICS
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] journal & Dissertation

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