The optimization of CMC concentration as graphite binder on the anode of LiFePO4 battery

3rd International Conference on Functional Materials Science 2016

Hidayat, S.^1 ; Cahyono, T.^1 ; Mindara, J.Y.^1 ; Riveli, N.^1 ; Alamsyah, W.^1 ; Rahayu, I.^2

Department of Physics, Faculty Mathematic and Natural Sciences, University of Padjadjaran, Jl. Raya Bandung-Sumedang Km 21, Jatinangor, West Jawa

45363, Indonesia^1

Department of Chemistry, Faculty Mathematic and Natural Sciences, University of Padjadjaran, Jl. Raya Bandung-Sumedang Km 21, Jatinangor, West Jawa

45363, Indonesia^2

关键词: Carboxy-methyl cellulose;    Cyclic voltammograms;    Electrochemical characteristics;    High conductivity;    Higher energy density;    Low cost fabrication;    Mobile electronics;    Rechargeable lithium ion battery;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/196/1/012035/pdf
DOI  :  10.1088/1757-899X/196/1/012035

来源: IOP

【 摘 要 】

Recently, the most dominating power supply on the mobile electronics market are rechargeable Lithium-ion batteries. This is because of a higher energy density and a longer lifetime compared to similar rechargeable battery systems. Graphite is commonly used as anode material in the Lithium-ion batteries, because of its excellent electrochemical characteristics and low cost fabrication. In this paper, we reported the optimization of the concentration of the CMC (carboxymethyl cellulose), that acts as the binder for graphite anode. Based on our experimental results, the best composition of graphite : C : CMC is 90 : 8 : 2 in weight %. Anode with such composition has, based on SEM measurement, a relatively good surface morphology, while it also has relatively high conductivity, about 2.68 S/cm. The result of cyclic voltammogram with a scan rate of 10 mV/s in the voltage range of 0 to 1 Volt, shows the peak of reduction voltage at 0.85 Volts and the peak voltage of oxidation is at -1.5 Volt. The performance of the battery system with LiFePO4set as the cathode, shows that the working voltage is about 2.67 Volts at 1 mA current-loading, with the efficiency around 47%.