Rational synthesis of MnO 2/conducting polypyrrole@carbon nanofiber triaxial nano-cables for high-performance supercapacitors

Jian Gan Wang, Ying Yang, Zheng Hong Huang, Feiyu Kang

科研成果: 期刊稿件文章同行评审

210 引用 (Scopus)

摘要

This study presents a rational synthesis of hierarchical MnO 2/conducting polypyrrole (PPy)@carbon nanofiber (CNF) triaxial nano-cables via in situ interfacial redox reaction. Uniform MnO 2/PPy multifunctional nanocoatings (∼20 nm) are formed on individual electrospun CNFs, constructing a one-dimensional triaxial configuration. The unique architecture enables a maximum value of the MnO 2/PPy pseudocapacitance and a strong synergetic effect of each component. The specific capacitance of the ternary nanocomposite as a freestanding electrode reaches as high as 705 F g -1 at 2 mV s -1. The three-dimensional porous electrode facilitates a large mass loading of active materials up to 2.0 mg cm -2, which leads to a high areal capacitance of 1.4 F cm -2. The improved electrical conductivity and strong structural integrity of the nanocomposite also endow the electrodes with good rate capability and long-term cycling stability. The superior electrochemical performance indicates that this method is an effective strategy for developing multifunctional nanocomposite electrodes for energy storage devices.

源语言英语
页(从-至)16943-16949
页数7
期刊Journal of Materials Chemistry
22
33
DOI
出版状态已出版 - 7 9月 2012
已对外发布

指纹

探究 'Rational synthesis of MnO 2/conducting polypyrrole@carbon nanofiber triaxial nano-cables for high-performance supercapacitors' 的科研主题。它们共同构成独一无二的指纹。

引用此