Reduced graphene oxide (rGO)/polyaniline (PANI) composites grabbed the interest of researcher towards the development of electrolyte material. In present research work, we have focused on the synthesis of rGO and PANI by chemical method. The composites are prepared using different amounts of rGO/PANI and lithium carbonate. The main objective is to enhance structural and electrochemical properties of polymer composites. It is observed that proper interface of polymer composites leads towards the desired charge-discharge capacity and cyclic stability with the diffusion of electrons and electrolyte ions. This particular study can be further used for the development of electrochemical device applications. Graphic abstract