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Titolo:
Structural and electrochemical properties of Li-Ni-Co oxides synthesized by wet chemistry via a succinic-acid-assisted technique
Autore:
Castro-Garcia, S; Julien, C; Senaris-Rodriguez, MA;
Indirizzi:
Univ A Coruna, Fac Ciencias, Dept Quim Fundamental, A Coruna 15071, Spain Univ A Coruna A Coruna Spain 15071 im Fundamental, A Coruna 15071, Spain Univ Paris 06, UMR 7603, LMDH, F-75252 Paris, France Univ Paris 06 ParisFrance F-75252 UMR 7603, LMDH, F-75252 Paris, France
Titolo Testata:
INTERNATIONAL JOURNAL OF INORGANIC MATERIALS
fascicolo: 4-5, volume: 3, anno: 2001,
pagine: 323 - 329
SICI:
1466-6049(200107)3:4-5<323:SAEPOL>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOW-TEMPERATURE TECHNIQUES; LICOO2; LINIO2;
Keywords:
Li-Ni-Co oxides; rechargeable Li cell; sol-gel method;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Castro-Garcia, S Univ A Coruna, Fac Ciencias, Dept Quim Fundamental, A Coruna 15071, Spain Univ A Coruna A Coruna Spain 15071 Coruna 15071, Spain
Citazione:
S. Castro-Garcia et al., "Structural and electrochemical properties of Li-Ni-Co oxides synthesized by wet chemistry via a succinic-acid-assisted technique", INT J INORG, 3(4-5), 2001, pp. 323-329

Abstract

Lithiated metal oxides LiCo1-xNiyO2 were synthesized by a sol-gel method using succinic acid as chelating agent. Microcrystalline materials were formed by calcination in oxygen at 800 degreesC. The physicochemical propertiesof the powders (crystallinity, lattice constants, size grain) has been investigated in the compositional range 0 less than or equal to y less than orequal to 1. Structural studies show that a layered single phase was obtained. The local cationic environment has been studied by Raman and FTIR spectroscopy. The changes in the vibrational spectra are well related to those observed by X-ray diffraction. It is shown that the lithium predominant layers are preserved in the entire range of substitution. Pelletized LiCo1-yNiyO2 powders (0.2 less than or equal to y less than or equal to 1.0) were tested in Li//LiCo1-yNiyO2 cells by galvanostatic titration. These cells have an initial capacity of 140 mAh/g in the voltage range 2.8-4.2 V and show attractive charge-discharge profiles upon cycling. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 12:39:27