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Titolo:
Thermal and electrochemical studies of carbons for Li-ion batteries 1. Thermal analysis of petroleum and pitch cokes
Autore:
Jiang, W; Tran, T; Song, X; Kinoshita, K;
Indirizzi:
Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 nol Div, Berkeley, CA 94720 USA Univ Calif Lawrence Livermore Natl Lab, Dept Chem & Mat Sci, Livermore, CA94550 USA Univ Calif Lawrence Livermore Natl Lab Livermore CA USA 94550 CA94550 USA
Titolo Testata:
JOURNAL OF POWER SOURCES
fascicolo: 2, volume: 85, anno: 2000,
pagine: 261 - 268
SICI:
0378-7753(200002)85:2<261:TAESOC>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
GRAPHITE; SYSTEM;
Keywords:
thermal analysis; coke; oxidation; Li-ion batteries;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Kinoshita, K Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, 90-1142, Berkeley, CA 94720 USA Univ Calif Berkeley 90-1142 Berkeley CA USA 94720 A 94720 USA
Citazione:
W. Jiang et al., "Thermal and electrochemical studies of carbons for Li-ion batteries 1. Thermal analysis of petroleum and pitch cokes", J POWER SOU, 85(2), 2000, pp. 261-268

Abstract

Thermal analyses involving simultaneous thermal gravimetric analysis (TGA)and differential thermal analysis (DTA) were used to study the air oxidation of petroleum (fluid and needle cokes) and coal-tar pitch cokes. The intent of this study is to understand the relationship between the structure ofcarbonaceous materials and their thermal oxidation behavior in air (Part 1). A correlation between the thermal oxidative properties of cokes and their electrochemical Li-intercalation performance is discussed in the following paper (Part 2). The carbon samples were heat-treated at temperatures up to 2800 degrees C, and three thermal parameters were determined - ignition temperature (T-i), temperature maximum (T-m) in the DTA. curves, and the temperature at which 15% carbon weight loss was attained (T-15). The measurements showed trends that are consistent with prior reports that the active sites on the surface and not the total surface area (TSA) are responsible forthe thermal behavior of the carbons. Because of the difference in the graphitizability of petroleum and pitch cokes that was obtained by heat treatment, variations in the thermal parameters were observed. Needle cokes are the most easily graphitized and this is reflected in the higher values of thethermal parameters compared to the fluid and pitch cokes. (C) 2000 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/01/20 alle ore 19:09:37