dc.contributor | Universidade Federal de São Carlos (UFSCar) | |
dc.contributor | Universidade Estadual de Ponta Grossa (UEPG) | |
dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.contributor | Universidade de São Paulo (USP) | |
dc.date.accessioned | 2014-05-27T11:21:01Z | |
dc.date.accessioned | 2022-10-05T17:51:57Z | |
dc.date.available | 2014-05-27T11:21:01Z | |
dc.date.available | 2022-10-05T17:51:57Z | |
dc.date.created | 2014-05-27T11:21:01Z | |
dc.date.issued | 2004-01-02 | |
dc.identifier | Journal of Power Sources, v. 125, n. 1, p. 103-113, 2004. | |
dc.identifier | 0378-7753 | |
dc.identifier | http://hdl.handle.net/11449/67621 | |
dc.identifier | 10.1016/j.jpowsour.2003.07.016 | |
dc.identifier | 2-s2.0-0348157035 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3917251 | |
dc.description.abstract | A quantitative phase analysis was made of LixCoO2 powders obtained by two distinct chemical methodologies at different temperatures (from 400 to 700°C). A phase analysis was made using Rietveld refinements based on X-ray diffraction data, considering the Li xCoO2 powders as a multiphase system that simultaneously contained two main phases with distinct, layered and spinel-type structures. The results showed the coexistence of both structures in LixCoO 2 obtained at low temperature (400 and 500°C), although only the layered structure was detected at higher temperatures (600 and 700°C), regardless of the chemical powder process employed. The electrochemical performance, evaluated mainly by the cycling reversibility of Li xCoO2 in the form of cathode insertion electrodes, revealed that there is a close correlation between structural features and the electrochemical response, with one of the redox processes (3.3 v/3.9 v) associated only with the presence of the spinel-type structure. © 2003 Elsevier B.V. All rights reserved. | |
dc.language | eng | |
dc.relation | Journal of Power Sources | |
dc.relation | 6.945 | |
dc.relation | 2,202 | |
dc.rights | Acesso restrito | |
dc.source | Scopus | |
dc.subject | Insertion electrodes | |
dc.subject | LixCoO2 | |
dc.subject | Lithium battery | |
dc.subject | Rietveld method | |
dc.subject | X-ray structural refinement | |
dc.subject | Electrochemistry | |
dc.subject | High temperature effects | |
dc.subject | Lithium batteries | |
dc.subject | Low temperature effects | |
dc.subject | Neutron diffraction | |
dc.subject | Oxidation | |
dc.subject | Phase transitions | |
dc.subject | Redox reactions | |
dc.subject | Structure (composition) | |
dc.subject | X ray diffraction analysis | |
dc.subject | Rietveld refinements (RR) | |
dc.subject | Structural stability | |
dc.subject | Lithium compounds | |
dc.title | Quantitative structural analysis of the transition from LT-Li xCoO2 to HT-LixCoO2 using the rietveld method: Correlation between structure and electrochemical performance | |
dc.type | Artigo | |