Synthesis and Characterization of Anode for Lithium Ion Battery

Abstract

Anode sheet manufacturing for lithium batteries coated with Polyvinylidene fluoride polymer (PVDF) has been done. The anode sheet is made using a desktop bubble remover from graphite base material by varying the PVDF content of 10%, 15% and 20%, which is called as G1, G2 and G3 samples. The anode material from the mixture of graphite and PVDF is then coated again using PVDF polymer electrolyte with variations in content as much as 10%, 15% and 20%, respectively called as GL1, GL2 and GL3 samples. Characterization of the anode product was measured using XRD diffraction, scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS). The conductivity of the anode sheet was measured using LCR meter. The result shows that the PVDF polymer phase is only observed in GL1, GL2, and GL3 samples. The conductivity value (s) of the anode sheet in the samples G1, G2 and G3 is obtained in the order of 103 S.cm-1 to 102 S.cm-1 slightly greater than that of the standard anode sheet («103 S.cm-1). The conductivity (s) of the anode sheet tends to decrease with the addition of the PVDF polymer for the GL1, GL2 and GL3 samples to 10-4 S.cm-1. The maximum conductivity in this study was obtained in the G2 sample, with a PVDF polymer content of 15%. SEM/EDS observations show that the fluorine (F) element increases with the addition of the PVDF for GL2 sample.