Preparation and lithium intercalation of a new vanadium oxide with a two-dimensional structure

• Published in: Solid state ionics Vol. 79; pp. 239 - 244
• Main Authors: Hibino, Mitsuhiro, Ugaji, Masaya, Kishimoto, Akira, Kudo, Tetsuichi
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 1995; Elsevier Science
• Subjects: Chemistry; Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...); Exact sciences and technology; Inorganic chemistry and origins of life; Intercalation; Preparations and properties; Random layer lattice; Vanadium oxide; Intercalation; Random layer lattice; Vanadium oxide; Intercalation compound; Lithium Ions; Lamellar structure; Transition metal Compounds; Electrochemical reaction; X ray diffraction; Vanadium Oxides
• DOI: 10.1016/0167-2738(95)00068-H
• ISSN: 0167-2738

A new type of V 2O 5 which was synthesized by a reaction of metallic vanadium with hydrogen peroxide solution, takes a random layer lattice structure based on the a- b plane of orthorhombic V 2O 5. Electrochemical intercalation of Li into this two-dimensional compound was investigated in a LiClO 4/propylene carbonate solution. Discharge and charge cycles carried out in the voltage range 2.0 to 4.3 V showed a high specific capacity of about 310 Ah/kg. The film fabricated on an ITO glass substrate by the spin-coating technique, using a water based solution of the new V 2O 5, exhibited electrochromism. The magnitude of optical density change at 380 nm between coloration and decoloration of the film of 8000 Å thickness, is about 0.7.