Markus Diantoro, Yusril Al Fath, Nandang Mufti, Agung Saputro, Reza Akbar Pahlevi, Megat Muhammad Ikhsan Megat Hasnan, Pramod K. Singh
Supercapacitor is one of the energy storage devices that was developed in order to overcome increasingly massive energy consumption. Some materials that have high and effective electrochemical performance are metal oxides and carbon. In addition, magnetic field is an external factor that is expected to change electrochemical performance of supercapacitor. Previous study reported that low magnetic fields (0-50 mT) increased the specific capacitance, specific energy, specific power, and electrochemical stability of supercapacitors. This study starts with electrode fabrication using blending method, in which Activated Carbon-MnO2 (AC-MnO2) was composited with conductive materials and binder. Electrochemical measurements were carried out by connecting a potentiostat with a magnetic double coil generator (0-50 mT). From Cyclic Voltammetry (CV), addition of low magnetic field can increase the measured current, which means greater capacitance. The diffusion coefficient (D) and ionic mobility (μ) parameters also increase and have optimal values of 1.13×10-4 cm2/s and 4.38×10-3 cm2/Vs at 50 mT. © 2025 Journal of Magnetics.
Department of Physics, Faculty of Mathematics and Natural Sciences, State University of Malang, Indonesia; Department of Electrical and Electronics Engineering, Faculty of Engineering, Universiti Malaysia Sabah, Jalan UMS, Malaysia; Center for Solar Cell and Renewable Energy, Department of Physics, Sharda University, India
