The alternative advanced lead-acid battery is one of the promising ultrabattery. The lead-carbon battery is also reusable battery consisted of positive electrodes, negative electrode and Electrolyte. Currently, numerous research efforts are performing on activated carbon used as the novel cathode materials. In this study, we have used graphite sheet coated P60 carbon as a cathode material. Graphite electrode is different form used in the normal lead-carbon batteries. It will be expected to increase the conductivity and weigh light. Through charge-discharge experiment and EIS, battery performance analysis were compared with grid form negative electrode. After that, SEM, RAMAN and XRD analyses were studied.

A novel cation exchange membrane consisting of polyvinylidene difluoride (PVDF) was prepared for the application of vanadium redox flow battery (VRFB). PVDF used as supporter has considerably high mechanical strength and an intrinsic hydrophobicity. For the successful preparation of the membrane, PVDF powders were modified by potassium hydroxide, which increased the hydrophilicity of PVDF powders. Modified PVDF were grafted with styrene sulfonic acid (SSA) using benzoyl peroxide (BPO) as initiative. The cross-sectional morphology and structure of PVDF/SSA was confirmed by scanning electron microscopy (SEM) and FT-IR. The membrane was characterized by water uptake, dimensional change, ion conductivity and ion exchange capacity (IEC) and cell performance of Vanadium Redox Flow Battery (VRFB) with Nafion 212.