Sol–gel fabrication and lithium insertion kinetics of the Mo-doped lithium vanadium oxide thin films Li1+xMoyV3−yO8

Autor:	ALEXANDER SKUNDIN, Tatiana Kulova, Alexey Ivanov-Schitz
Rok vydání:	2002
Předmět:	Lithium vanadium phosphate battery Chemistry Inorganic chemistry chemistry.chemical_element General Chemistry Electrolyte Condensed Matter Physics Vanadium oxide Dielectric spectroscopy Chemical engineering General Materials Science Lithium Crystallite Thin film Sol-gel
Zdroj:	Solid State Ionics. 151:129-140
ISSN:	0167-2738
Popis:	Thin films of molybdenum-doped vanadium oxide bronzes Li 1+ x Mo y V 3− y O 8 (0≤ y ≤0.20) were synthesized by sol–gel process in metal alkoxides solution. The influence of the applied hydrolysis ratio on the particle's shape and size, their location and orientation on the substrate has been investigated. The variation of both material morphology and unit cell geometry changes the lithium galvanostatic discharge capacity significantly. There are two factors resulted in increasing of material capacity: decreasing of (100) crystallite faces contribution to the whole particle surface and increasing of Mo-doping level y . Lithium chemical diffusion coefficient and exchange current density on the interface “film/aprotic Li + -conducting electrolyte” were determined on materials having optimized Mo-doping level and particle morphology at various Li concentrations in the host structure by electrochemical impedance spectroscopy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ee0e94f0ee53b202b6c35c8bf8dc31be https://doi.org/10.1016/s0167-2738(02)00591-x Zobrazit plný text záznamu Full Text from ScienceDirect