Electrochemical Synthesis of Functionalized Graphene/Polyaniline Composite Using Two Electrode Configuration for Supercapacitors

• Published in: Nanomaterials
• Main Authors: Dongsheng Yu, Jili Li, Tiekun Jia, Binbin Dong, Zhixiao Han, Wenjie Tian, Ruilin Jiang, Xi Lu, Lekang Li
• Format: Article
• Language: English
• Published: MDPI AG 2023-12-01
• Subjects: aryl diazonium salt-functionalized graphene (ADS-G); ADS-G/PANI composites; electrochemical polymerization; supercapacitor
• Online Access: https://www.mdpi.com/2079-4991/13/24/3140
• ISSN: 2079-4991

An effective approach for the large-scale fabrication of conducting polyaniline (PANI) using in situ anodic electrochemical polymerization on nickel foam which had been coated in aryl diazonium salt (ADS)-modified graphene (ADS-G). In the present work, ADS-G was used as a high surface-area support material for the electrochemical polymerization of PANI. The electrochemical performances of the ADS-G/PANI composites exhibited better suitability as supercapacitor electrode materials than those of the PANI. The ADS-G/PANI composites achieved a specific capacitance of 528 F g⁻¹, which was higher than that of PANI (266 F g⁻¹) due to excellent electrode–electrolyte interaction and the synergistic effect of electrical conductivity between ADS-G and PANI in the composites. These findings suggest that the ADS-G/PANI composites are a suitable composite for potential supercapacitor applications.