Quantitative structural analysis of the transition from LT-Li xCoO2 to HT-LixCoO2 using the rietveld method: Correlation between structure and electrochemical performance
MetadataShow full item record
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.
How to cite this document
Showing items related by title, author, creator and subject.
The structure of a native L-amino acid oxidase, the major component of the Vipera ammodytes ammodytes venomic, reveals dynamic active site and quaternary structure stabilization by divalent ions Georgieva, Dessislava; Murakami, Mario; Perband, Markus; Arni, Raghuvir ; Betzel, Christian (Molecular Biosystems, 2011) [Artigo]The crystal structure of the major component of the Vipera ammodytes ammodytes venomic, a flavotoxin, member of the L-amino acid oxidase (LAAO) family, has been determined and refined at 2.6 angstrom resolution. The ...
SAXS Studies of the Endoglucanase Cel12A from Gloeophyllum trabeum Show Its Monomeric Structure and Reveal the Influence of Temperature on the Structural Stability of the Enzyme Miotto, Lis S.; Reis, Caio V. dos; Neto, Mario de Oliveira ; Polikarpov, Igor (Materials, 2014) [Artigo]Endoglucanases are key enzymes applied to the conversion of biomass aiming for second generation biofuel production. In the present study we obtained the small angle X-ray scattering (SAXS) structure of the G. trabeum ...
Tsushima, K.; Saito, K.; Steffens, F. M. (Physics Letters B, 2005) [Artigo]Effect of bound nucleon internal structure change on nuclear structure functions is investigated based on local quark-hadron duality. The bound nucleon structure functions calculated for charged-lepton and (anti)neutrino ...