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Type: Artigo de periódico
Title: Structural and electrochemical behavior of tungsten oxide obtained by solid state reaction
Author: Souza, EA
Santos, AO
Landers, R
Cunha, F
Macedo, MA
Abstract: Tunesten oxides have been used successfully as intercalation compounds of high performance batteries. In this communication we present a new and innovative route to obtain orthorhombic WO3 where the crystallographic structure can be carefully controlled. X-ray diffraction data indicates that a texture is obtained in the [0k0] direction, whereas XPS suggests that the valence of the tungsten atom is +6. The electrochemical behavior of the oriented sample was studied by chronopotentiometry and its charge-discharge capacity was evaluated. The results showed stable values close to 100 mA h/g after the 70th cycle, which compares favorably to the best know WO3 compounds produced so far. (c) 2006 Elsevier B.V. All rights reserved.
Subject: tungsten oxide
solid state reaction
lithium batteries
thick film
Country: Holanda
Editor: Elsevier Science Bv
Citation: Solid State Ionics. Elsevier Science Bv, v. 177, n. 41858, n. 697, n. 701, 2006.
Rights: fechado
Identifier DOI: 10.1016/j.ssi.2006.01.001
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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