Preparation of Li3+xV1-xSixO4 Films by Solvthermal Electrochemical Method

doi:10.3724/SP.J.1077.2010.00631

Abstract

Abstract: Dense crystalline Li₃VO₄/Li₄SiO₄ solid solution films were prepared on Pt substrate electrochemically in SiO₂, V₂O₅, LiOH, absolute ethyl alcohol solution. XRD, IR, and Raman analyses indicate that the films are well-crystallized with γ-Li₃PO₄ structure. No Li₂SiO₃impurity is found in the sample. The chemical composition of the film is 0.4 (Li₄SiO₄)-0.6(Li₃VO₄). Using a low boiling point ethyl alcohol as solvent can improve the films properties due to the increased vapor pressure generated in the reaction. The absolute ethyl alcohol of the reaction system facilitated the formation of the Li_3+xV_1-xSi_xO₄ phase. The surface of the films is smooth and fine grained due to the low solubility of the constituent ions in the solvent and the low formation speed of the films.

Key words: solvthermal electrochemical method, solid electrolyte, film, thermodynamics analysis

CLC Number:

TM912

ZHU Bao-Jun1, TAO Ying2, ZHANG Yang1, ZHENG Rui1, ZOU Xiao-Lin1. Preparation of Li_3+xV_1-xSi_xO₄ Films by Solvthermal Electrochemical Method[J]. Journal of Inorganic Materials, 2010, 25(6): 631-634.

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Preparation of Li_3+xV_1-xSi_xO₄ Films by Solvthermal Electrochemical Method

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