Preparation of nano-networks of MnO2shell/Ni current collector core for high-performance supercapacitor electrodes

• DOI: 10.1039/c1jm13894d
• Publication Date: 2011-11-10T10:29:08Z
• Authors: Dequan Liu; Qi Wang; Li Qiao; Fei Li; Desheng Wang; Zhibo Yang; Deyan He
• Keywords: Current collector; Horizontal scan rate; Electrospinning

A novel architecture of nickel current collector (NCC) is fabricated cost-effectively by electrospinning. An ultrathin MnO2 coating electrodeposited on to the NCC and resultant nano-networks shell/NCC core are used as supercapacitor electrodes. Excellent electrochemical performance revealed at a high charge/discharge rate. The cyclic voltammetry measurements show that stable even scan rate fast 200 mV s−1. capacitance 214 F g−1 obtained galvanostatic testing density large 20 g−1, which much higher than coated Ni foam.