Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 2, Pages 483-487Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm13894d
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Funding
- National Nature Science Foundation of China [10974073, 11179038]
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A novel architecture of nickel current collector (NCC) is fabricated cost-effectively by electrospinning. An ultrathin MnO2 coating is electrodeposited on to the NCC and the resultant nano-networks of MnO2 shell/NCC core are used as supercapacitor electrodes. Excellent electrochemical performance is revealed at a high charge/discharge rate. The cyclic voltammetry measurements show that the current is stable even at a scan rate as fast as 200 mV s(-1). A capacitance of 214 F g(-1) is obtained by galvanostatic testing at a current density as large as 20 A g(-1), which is much higher than that of MnO2 coated Ni foam.
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