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Titolo:
Synthesis of LixNi0.85Co0.15O2 by the PVA-precursor method and charge-discharge characteristics of a lithium ion battery using this material as cathode
Autore:
Kweon, HJ; Kim, GB; Kim, HS; Nam, SS; Park, DG;
Indirizzi:
Sookmyung Womens Univ, Dept Chem, Seoul 140742, South Korea Sookmyung Womens Univ Seoul South Korea 140742 Seoul 140742, South Korea Samsung Display Devices Co Ltd, Chunan 330300, South Korea Samsung DisplayDevices Co Ltd Chunan South Korea 330300 00, South Korea Korea Res Inst Chem Technol, Div Chem Technol, Taejon 305600, South Korea Korea Res Inst Chem Technol Taejon South Korea 305600 05600, South Korea
Titolo Testata:
JOURNAL OF POWER SOURCES
fascicolo: 1-2, volume: 83, anno: 1999,
pagine: 84 - 92
SICI:
0378-7753(199910)83:1-2<84:SOLBTP>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
RECHARGEABLE BATTERIES; LINIO2; CELLS; OXIDES; PERFORMANCE; MORPHOLOGY; LICOO2;
Keywords:
lithium ion battery; cathode; precursor; electrochemical property;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Park, DG Sookmyung Womens Univ, Dept Chem, Seoul 140742, South Korea Sookmyung Womens Univ Seoul South Korea 140742 742, South Korea
Citazione:
H.J. Kweon et al., "Synthesis of LixNi0.85Co0.15O2 by the PVA-precursor method and charge-discharge characteristics of a lithium ion battery using this material as cathode", J POWER SOU, 83(1-2), 1999, pp. 84-92

Abstract

Polycrystalline powder of LixNi0.85Co0.15O2 was synthesized from poly(vinyl alcohol) gel (a PVA-precursor). The crystalline phase of LixNi0.85Co0.15O2 was developed without any minor phase above 600 degrees C. The crystallization proceeded without any prominent heat event, which indicated homogeneous distribution of constituents and insignificant amount of diffusion barrier. The crystalline powder prepared from the PVA-precursor had relatively smaller particle size, larger surface area, and higher carbon content than the one prepared by the conventional solid state reaction. Charge-discharge property was studied by using a coin-type cell containing LixNi0.85Co0.15O2as cathode material, and Li metal as the anode, in a potential range of 2.8-4.3 V. Initial discharge capacity (at a rate of C/10) of the cell was 170mA h/g. At high rate of 1C, the cycling reversibility for the cell with LixNi0.85Co0.15O2 prepared from the PVA-precursor was observed to be much better than that with the one prepared by the solid state reaction. After 90 continuous cycles at constant rate of 1C, the decrease of discharge capacitywas less than 20 mA h/g in the case of the PVA-precursor method, whereas it was about 80 mA h/g for the solid state reaction. (C) 1999 Elsevier Science S.A. All sights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/08/20 alle ore 16:56:21