3D interconnected graphene aerogels/carbon foam networks with balanced performance in specific surface area and electrical conductivity for supercapacitors

• Published in: Bulletin of materials science Vol. 43; no. 1; p. 153
• Main Authors: Zhao, J M, Zhu, Y Y, Liu, Y, Xiong, R
• Format: Journal Article
• Language: English
• Published: Bangalore Indian Academy of Sciences 01.12.2020; Springer Nature B.V
• Subjects: Aerogels; Capacitance; Carbon; Charge transfer; Chemistry and Materials Science; Electrical resistivity; Electrochemical analysis; Electrodes; Engineering; Graphene; Investigations; Materials Science; Metal oxides; Morphology; Nitrogen; Pore size; Porous resins; Radiation; Specific surface; Spectrum analysis; Supercapacitors; Surface area; Specific surface area; graphene aerogels/carbon foam; electrical conductivity; supercapacitor
• ISSN: 0250-4707; 0973-7669
• DOI: 10.1007/s12034-020-02105-7

To balance the performance in specific surface area and electrical conductivity, ordered sheets of graphene aerogels were induced into porous carbon foam for supercapacitors with enhanced specific capacitance. Systematic investigations into morphology, structure and electrochemical properties confirmed that the introduction of graphene aerogels can effectively make specific surface area to increase, however, the declined resistance is neither due to electrolyte diffusion nor charge transfer, which gave rise to the improvement of electrochemical performance by 55.3% with a great specific capacitance of 210.5 F g - 1 at the current density of 0.5 A g - 1 compared to that of carbon foam.