CV Performance of ZnO-Carbon Nanocomposite Based On ZIF-8 as Lithium-Ion Battery Anode

Abstract

Compositing between metal oxide and carbon is strategy to improve the performance of lithium-ion battery anode. This is due to the high theoretical capacity of metal oxides, carbon acts as a lithium ion accelerator and supports the structural stability of metal oxides. The advantages of the ZnO-Carbon nanocomposite anode based on ZIF-8 are its large surface area and porosity. The method used is non-solvothermal through precipitation at room temperature. After obtaining ZIF-8 powder, then it was carbonized at temperatures 600°C. The characterization used were SEM, EDS and TEM. The samples also have a porous character with a nano-sized pore radius. Cyclic Voltammetry (CV) was carried out using 3-electrode system. The CV test showed 3 reduction peaks. The first peak indicated the conversion reaction, the second peak indicated the alloying reaction, and the third peak indicated a solid electrolyte interface (SEI) reaction. The highest diffusion coefficient is alloying reaction with 3.65 x 10−8 cm2/s.