{'fraction_non_alphanumeric': 0.02239328201539538, 'fraction_numerical': 0.021693491952414275, 'mean_word_length': 4.958333333333333, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Analysis of Electrochemical Performance of Reduced Graphene Oxide based Symmetric Supercapacitor with different Aqueous Electrolytes

: Carbon nanomaterials are considered to be the materials of choice for the fabrication of electrochemical energy storage devices due to their stability, cost-effectiveness, well-estab-lished processing techniques, and superior performance compared to other active materials. In the present work, reduced graphene oxide (rGO) has been synthesized and used for the fabrication of a symmetric supercapacitor. The electrochemical performance of the fabricated supercapacitors with three different aqueous electrolytes namely 0.5 M H 2 SO 4 , 0.5 M H 3 PO 4 , and 1.0M Na 2 SO 4 have been compared and analyzed. Among the three electrolytes, the highest areal specific capacitance of 14 mF/cm 2 was calculated at a scan rate of 5 mV/s observed with 0.5M H 3 PO 4 electrolyte. The results were also confirmed from the charge/discharge results where the supercapacitor with 0.5M H 3 PO 4 electrolyte delivered a specific capacitance of 11 mF/cm 2 at a current density of 0.16 mA/cm 2 . In order to assess the stability of the supercapacitor with different electrolytes, the cells were subjected to continuous charge/discharge cycling and it was observed that acidic electrolytes showed excellent cyclic stability with no appreciable drop in specific capacitance as compared to the neutral electrolyte.