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http://dx.doi.org/10.9713/kcer.2019.57.1.5

Electrochemical Characteristics of Artificial Graphite Anode Coated with Petroleum Pitch treated by Solvent  

Jo, Yoon Ji (Department of Chemical Engineering, Chungbuk National University)
Lee, Jong Dae (Department of Chemical Engineering, Chungbuk National University)
Publication Information
Korean Chemical Engineering Research / v.57, no.1, 2019 , pp. 5-10 More about this Journal
Abstract
In this study, electrochemical characteristics of artificial graphite coated with petroleum pitch using solvent method as anode material of lithium ion battery were investigated. As the solvent, n-hexane, toluene, tetrahydrofuran and quinoline were used. The surface of the prepared anode material was analyzed by SEM and TEM. Also the electrochemical performances of the prepared anode materials were performed by constant current first charge/discharge, cycle, cyclic voltammetry and impedance tests in the electrolyte of $LiPF_6$ dissolved inorganic solvents (EC:DEC=1:1 vol%). The coating thickness of the prepared graphite was about 100-500 nm and the graphite coated with THF solvent had a smoother surface than that using other solvents. It was found that pitch-coated graphite (THF) show the low initial irreversible capacity (51 mAh/g), the high discharge capacity (360 mAh/g) and coulombic efficiency (99%).
Keywords
Graphite; Pitch; THF; Solvent fraction; Anode materials;
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Times Cited By KSCI : 2  (Citation Analysis)
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