Abstract
Lithium ion battery performance of graphitized Meso Carbon Micro Beads (MCMB) as an anode material was investigated in full cell battery system containing LiCoO<sub>2</sub> cathode, PE separator and LiPF<sub>6</sub> electrolyte. The commercial MCMB, which was fabricated by Linyi<sup>TM</sup>, was sintered at 500⁰C for five hour to make graphitized MCMB. The microstructure of graphitized MCMB was characterized using XRD and SEM to show the crystalinity, crystal phase and morphology of the MCMB particle. The result indicated that the crystal phase of the sample was changed into graphitized carbon .The electrode was made using coating method. We used copper foil as the substrate for anode. The anode materials consist of graphitized MCMB (active material), Polyvinylidene fluoride/PVDF (binder) and acetylene black (additive material). Full cell battery was tested using charge-discharge and cyclic voltammetry (CV) methods. From the CV characterization, cyclic voltammograms of the cell show characteristic lithium intercalation through reduction-oxidation peak. Charge-discharge test showed the discharge and charge capacity of the cells. According charge discharge test, commercial MCMB was better that graphitized MCMB.
Highlights
Lithium ion battery has been widely used as energy storage system for applications such as in the field of portable electronic, e.g. in mobile phone, notebook computer, gadget, camera [1] and for electric vehicles and hybrid electric vehicles [2]
It was very interesting to analyze the synthetic graphite like graphitized Meso Carbon Micro Beads (MCMB) to improve the performance of anode in the lithium ion battery
The full cell battery of commercial and graphitized MCMB were investigated in pouch cells
Summary
Lithium ion battery has been widely used as energy storage system for applications such as in the field of portable electronic, e.g. in mobile phone, notebook computer, gadget, camera [1] and for electric vehicles and hybrid electric vehicles [2]. There are many parameters that should be optimized, including the energy density, safety, rate capability, cost, sustainability [2] and cycle life [3] to get better performance of the Li-ion batteries. Carbon-based anode has been widely used as anode for commercial batteries such as mesocarbonmicrobead, artificial and natural graphite, carbon fiber or C-C composites material [4], carbon nanotube, and graphene [5]. Natural graphite was the most promising material for lithium-ion battery because of its low cost and flat potential profile, high columbic efficiency in proper electrolytes and relatively high reversible capacity. Graphitized MCMB is one of the benchmark synthetic graphite materials for lithium-ion battery [6]. It was very interesting to analyze the synthetic graphite like graphitized MCMB to improve the performance of anode in the lithium ion battery
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