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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1530| STRUCTURE OF NANOPARTICLES AND ELECTROCHEMICAL MEASUREMENTS OF Li/TiO2 MODIFIED BY GRAPHENE FOR STORAGE PERFORMANCE | |
| CLAUDIA GEORGINA NAVA DINO ADÁN BORUNDA TERRAZAS ALBERTO MARTINEZ VILLAFAÑE JOSE GUADALUPE CHACON NAVA | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| Electrochemistry Mechanical milling | |
| Samples of Lithium were made with mechanical ball-milling technique (MA) adding TiO2 and Graphene, to improve the electrochemical performance of lithium ion batteries. Drops of graphene oxide (GO) were added to the powders. Microstructures, morphologies and electrochemical results were investigated using SEM, TEM, X-ray diffraction (XRD), cyclic voltammetry and potentiodynamic studies. Results showed that, the Li samples with graphene oxide content affected the capacity of response without graphene. The alloys exhibit a superior capacity and good cycle stability adding TiO2. The milling ball to powder weight ratio was kept 5 to 1 for all experimental runs. Milling intervals were 0, 4 and 8 hrs; using alternate cycles of 30 minutes milling and 30 min resting. The nanostructure TiO2 powder, improve the samples to design a better electrode contributing to reduce degradation of samples. TiO2 and GO has significant influence on electrochemical performance of Lithium electrodes. The electrochemical measurements in Li could be enhanced by the chemical interactions between TiO2 and GO. Electrochemical experiments were performed on ACM Instruments Gill AC and a typical three electrode setup was constructed to measure the electrochemical properties of the working electrode; here, platinum was used as the counter electrode and calomel was used as the reference electrode. As an on-going effort to increase the cycle life and energy densities of lithium-ion batteries, structures of the samples were analyzed. | |
| 2015 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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