Study of electrochemical performance of amorphous carbon-coated graphite for Li-ion battery

Rohman, Fadli and Azizah, Umi Muflihatun Nurul and Prihandoko, Bambang (2017) Study of electrochemical performance of amorphous carbon-coated graphite for Li-ion battery. AIP Conference Proceedings, 1823. 020040. ISSN 0094-243X

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Full text available at: http://doi.org/10.1063/1.4978113

Abstract

Electrochemical performance of graphite coated by amorphous carbon as anode material in the Li-ion battery has been studied with citric acid (labelled CA) as a carbon source with different composition. Citric acid as the amorphous carbon source was mixed with graphite in the ethanol solvent at 80°C using magnetic stirrer with the compositions CA: graphite 2:1, 1:1 and 1:3, respectively. The mixture of graphite and CA were dried at 350°C for 5 hours under Ar atmosphere to evaporate the solvent. This dried mixture was then sintered at 600°C under Ar atmosphere to form amorphous carbon layer on the surface of graphite. The crystal structure and morphology of the particles were characterized using XRD, SEM and TEM, respectively. Electrochemical properties of the samples have been evaluated by cyclic voltammetry and charge-discharge test using WBCS 3000. Cyclic voltammogram showed the working potential and redox reaction peak of the sample. Charge-discharge data was obtained to determine the specific capacity of the sample at 0.1C - 2C.

Item Type: Journal Article
Divisions: Faculty of Mathematics and Sciences > Department of Physics
Depositing User: Heni Kurnia Ningsih
Date Deposited: 28 May 2018 03:11

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