Room-Temperature Fabrication of a Nickel-Functionalized Copper Metal–Organic Framework (Ni@Cu-MOF) as a New Pseudocapacitive Material for Asymmetric Supercapacitors
Yi Wang,
Shengqiang Nie,
Yuan Liu,
Wei Yan,
Shaomin Lin,
Gang Cheng,
Huan Yang,
Jun Luo
Affiliations
Yi Wang
College of Chemistry and Material Engineering, Gui Yang University, Guiyang 550005, China
Shengqiang Nie
College of Chemistry and Material Engineering, Gui Yang University, Guiyang 550005, China
Yuan Liu
College of Chemistry and Material Engineering, Gui Yang University, Guiyang 550005, China
Wei Yan
College of Chemistry and Material Engineering, Gui Yang University, Guiyang 550005, China
Shaomin Lin
School of Material Science and Engineering, Han Shan Normal University, Chaozhou 521041, China
Gang Cheng
College of Chemistry and Material Engineering, Gui Yang University, Guiyang 550005, China
Huan Yang
School of Material Science and Engineering, Han Shan Normal University, Chaozhou 521041, China
Jun Luo
College of Chemistry and Material Engineering, Gui Yang University, Guiyang 550005, China
A nickel-functionalized copper metal−organic framework (Ni@Cu-MOF) was prepared by a facile volatilization method and a post-modification synthesis method at room temperature. The obtained Ni@Cu-MOF electrode delivered a high capacitance of 526 F/g at 1 A/g and had a long-term cycling stability (80% retention after 1200 cycles at 1 A/g) in a 6 M KOH aqueous solution. Furthermore, an asymmetric supercapacitor device was assembled from this Ni@Cu-MOF and activated carbon electrodes. The fabricated supercapacitor delivered a high capacitance of 48.7 F/g at 1 A/g and a high energy density of 17.3 Wh/kg at a power density of 798.5 kW/kg. This study indicates that the Ni@Cu-MOF has great potential for supercapacitor applications.
