Preparation of nano-networks of MnO2 shell/Ni current collector core for high-performance supercapacitor electrodes

被引：81

作者：

Liu, Dequan ^{[1
]}

Wang, Qi ^{[1
]}

Qiao, Li ^{[1
]}

Li, Fei ^{[1
]}

Wang, Desheng ^{[1
]}

Yang, Zhibo ^{[1
]}

He, Deyan ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Phys Sci & Technol, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 02期

关键词：

NIO; FABRICATION; NANOFIBERS; CAPACITORS; RUO2;

D O I：

10.1039/c1jm13894d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：483 / 487

页数：5

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