Transporte de carga em compósitos de polianilina/V2O5
AUTOR(ES)
Huguenin, Fritz, Torresi, Roberto M.
FONTE
Química Nova
DATA DE PUBLICAÇÃO
2004-06
RESUMO
In this work, composites formed from a mixture of V2O5 and polyaniline (PANI) were investigated, for applications as cathode materials for secondary lithium batteries. Electrochemical quartz crystal microbalance (EQCM) data show that charge compensation in the [PANI]0.3V2O5 nanocomposite is achieved predominantly by Li+ migration. However, the charge compensation in the [PANI]V2O5 microcomposite occurs by Li+ and ClO4- transport. Electrochemical Impedance Spectroscopy (EIS) measurements reveal several benefits of nanohybrid formation, including the achievement of shorter ionic diffusion pathways, the higher diffusion rate of the lithium ion and also the higher electronic conductivity, which are responsible for a synergetic effect of the energy storage properties.
Documentos Relacionados
- Caracterização estrutural e eletrointercalação de íons lítio em compósitos V2O5/gelatina
- STUDY OF TRANSPORT OF POLYMER POLYANILINE
- Compósitos de borracha natural com polianilina
- Preparation and characterization of V2O5 catalyst supported TiO2.
- Estudo das Propriedades de Compósitos de Polianilina e Resina Epoxídica
