Pengaruh Komposisi Lembaran Anoda LTO (Li4Ti5O12) Terhadap Performa Sel Baterai Ion Lithium

Abstract

Research has conducted on the effect of the variation composition of powder LTO in manufacturing of the laminate anode. Variations composition of powder LTO: PVDF: Super P is 77: 15: 8, 85: 10: 5 and 90: 7: 3 %wt. Manufacture of laminate by mixing the powder material PVDF with solvents N,N-DMAC and then added to the powder Super P and LTO to form a slurry. Then slurry is coating on Cu foil and dried in oven to form a laminate. Laminate which has been so finished to analyzed morforlogi /elemental of composition and functional groups with SEM/EDX and FTIR. While the battery performance include CV and CD performed with the Automatic battery cycler. The results of SEM analysis indicated that the mixing of ingredients in the composition of 77: 15: 8 is homogeneous because balanced of composition from each material that is spread evenly on the entire surface (no one dominates) and the results of EDX analysis showed the percentage of each element in samples. FTIR testing not showed that chemical reaction between LTO with PVDF seen from the absence of Li-F group at wavenumber 1191 cm-1 . Best cell electrochemical properties on the composition of 77: 15: 8 %wt as seen from the curve CV is the establishment of a redox couple and from graph charge /discharge obtained capacity of LTO is 160 mAH/g.