Study and characterization of BaFe12O19/PVDF composites as electrode materials for supercapacitors

Supercapacitors are an interesting energy storage technology to be studied. This research uses mesoporous BaFe₁₂O₁₉ particles and synthesized Polyvinylidene fluoride (PVDF) polymers as materials to obtain high performance supercapacitors. Composites were synthesized by facile one-step method using BaFe₁₂O₁₉ which was prepared through co-precipitation chemical method with a calcination process at 200 °C along with PVDF with variations in sample composition of BaFe₁₂O₁₉, BaFe₁₂O₁₉ 20%, BaFe₁₂O₁₉ 30%, BaFe₁₂O₁₉ 40%, and BaFe₁₂O₁₉ 60%. And finally the fabrication of supercapacitor electrodes is carried out. The result of the synthesized material is distributed grains with the average particle size of each sample ranging from 180 to 185 nm. Then it has the highest peak in crystals with a miller index (114). Furthermore, it has the main functional group, Ba–O with a wave number of 1632 cm⁻¹. Furthermore, the best supercapacitor electrode is BaFe₁₂O₁₉/PVDF 60% which produces an area of 0.51 mVA where the greater the surface area, the higher the capacitance obtained. Then at BaFe₁₂O₁₉/PVDF 60% has the highest power density value at 12.36 Wh/kg and the highest power density value at 299.14 Wh/kg. It is expected that the results obtained can be a reference for further electrode material research.