講演情報
[8a-E217-5]Electrochemically Deposited Reduced Graphene Oxide/Polypyrrole Composite on Nickel Foam for Supercapacitor Applications
〇Henrilen Apilan Cubio1, Maria Carla Manzano1, Bo-Lin Chen2, Jyh-Tsung Lee2 (1.De La Salle Univ., 2.National Sun Yat-sen Univ.)
キーワード：
Reduced graphene oxide (rGO)、Polypyrrole (Ppy)、Supercapacitor
Reduced graphene oxide/polypyrrole (rGO/Ppy) composite electrodes were successfully synthesized on a nickel foam substrate via electrochemical deposition for supercapacitor applications. The composite combines the high electrical conductivity and large surface area of rGO with the pseudocapacitive properties of polypyrrole to enhance charge storage performance.
Electrochemical characterization by cyclic voltammetry at a scan rate of 50 mV s-1 revealed typical capacitive behavior, indicating efficient charge transfer and ion transport within the electrode. The rGO/Ppy electrode achieved a specific capacitance of 25 F g-1 , demonstrating charge storage through the combined effects of electric double-layer capacitance and faradaic redox reactions. The improved electrochemical response is attributed to the synergistic interaction between the conductive rGO network and the electroactive Ppy matrix.
Scanning electron microscopy revealed a continuous, homogeneous coating with a nodular morphology composed of uniformly distributed globular structures, confirming successful electropolymerization of Ppy on the rGO framework. This interconnected structure is expected to facilitate electrolyte accessibility and electron transport. The results demonstrate that electrochemically deposited rGO/Ppy composites on nickel foam are promising electrode materials for supercapacitor applications.
Electrochemical characterization by cyclic voltammetry at a scan rate of 50 mV s-1 revealed typical capacitive behavior, indicating efficient charge transfer and ion transport within the electrode. The rGO/Ppy electrode achieved a specific capacitance of 25 F g-1 , demonstrating charge storage through the combined effects of electric double-layer capacitance and faradaic redox reactions. The improved electrochemical response is attributed to the synergistic interaction between the conductive rGO network and the electroactive Ppy matrix.
Scanning electron microscopy revealed a continuous, homogeneous coating with a nodular morphology composed of uniformly distributed globular structures, confirming successful electropolymerization of Ppy on the rGO framework. This interconnected structure is expected to facilitate electrolyte accessibility and electron transport. The results demonstrate that electrochemically deposited rGO/Ppy composites on nickel foam are promising electrode materials for supercapacitor applications.