High-performance asymmetric supercapacitor based on graphene hydrogel and nanostructured MnO2

• Main Authors: Gao, Hongcai, Xiao, Fei, Ching, Chi Bun, Duan, Hongwei
• Other Authors: School of Chemical and Biomedical Engineering
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/96519; http://hdl.handle.net/10220/10270
• Institution: Nanyang Technological University

We have successfully fabricated an asymmetric supercapacitor with high energy and power densities using graphene hydrogel (GH) with 3D interconnected pores as the negative electrode and vertically aligned MnO2 nanoplates on nickel foam (MnO2-NF) as the positive electrode in a neutral aqueous Na2SO4...