Paper-Based Device Using Vacuum Filtration Technique with Different Electrode’s Material

In this study, paper-based energy storage devices using various electrodes’ material through vacuum filtration technique were studied. Paper substrate is becoming more common in flexible supercapacitors manufacturing due to its properties of low cost and environmental friendliness. This study examined the physical properties of fabricated devices using graphene and zinc oxide as electrode materials. Based on the result, it was shown that active materials that were coated on the paper substrate do not deteriorate in terms of physical properties after vacuum filtration process in producing electrodes. Variable Pressure Scanning Electron Microscopy displayed the morphology of electrode materials. Energy-dispersive X-ray spectroscopy showed that the percentage of elemental composition was 61.5% of zinc for zinc oxide electrode and 95.4% of carbon for graphene electrode. Raman spectroscopy showed the characteristic band of electrode materials. The zinc oxide electrode showed the cellulose acetate characteristic peak at 1139 cm−1, while graphene electrode showed graphene characteristic band at D band at 1345 cm−1, G band at 1576 cm−1 and 2D band at 2707 cm−1. This proved that vacuum filtration implemented sufficient amount of active material for power storage into the electrodes. This shows the feasibility for large scale production of flexible supercapacitor in future.