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|Type:||Artigo de periódico|
|Title:||Structural and electrochemical behavior of tungsten oxide obtained by solid state reaction|
|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.|
solid state reaction
|Editor:||Elsevier Science Bv|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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