Enhancement of Lithium Battery Performance by Thickness Anode Film Modification

Abstract:

A lithium battery was composed of anode, cathode, and separator. The performance of lithium battery was influenced by the thickness of film, the composition of material, and the effect of surfactant and binder. This research investigated the effect of the anode film thickness to the electrochemical performances of lithium battery. Mesocarbon microbeads (MCMB) and lithium iron phosphate (LiFePO₄) were used respectively as anode and cathode. Mesocarbon microbeads, carbon black (conductive agent), polyvinylidene fluoride (PVDF) as a binder and N-methyl-2-pyrrolidone (NMP) as a solvent were mixed well to produce slurry. The slurry were then coated, dried and pressed. The anode had various thickness of 50 μm, 70 μm, 100 μm, and 150 μm. The cathode film was made with certain thickness. The performance of lithium battery was examined by Eight Channel Battery Analyzer, the composition of the anode sample was examined by XRD (X-Ray Diffraction), and the crystal structure of the anode sample was analyzed by SEM (Scanning Electron Microscope). The research showed that the thickness of anode film of 100 μm gave the best performance. The battery performance decreased if the thickness was more than 100 μm. The best performance of battery voltage were between 3649 mV and 3650 mV.

• Periodical: Materials Science Forum (Volume 827)
• Pages: 156-161
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.827.156
• Online since: August 2015
• Authors: Rani Cahyani Fajaryatun, Therecia Wulan Sukardi, Arif Jumari, Agus Purwanto*
• Keywords: Anode Film Structure, Anode Film Thickness, Battery Performance, Cathode Film, Lithium Battery

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