Three-dimensional bicontinuous nanoporous Au/polyaniline hybrid films for high-performance electrochemical supercapacitors

被引:101
作者
Lang, Xingyou [1 ,2 ]
Zhang, Ling [1 ]
Fujita, Takeshi [1 ]
Ding, Yi [3 ]
Chen, Mingwei [1 ,4 ]
机构
[1] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan
[2] Jilin Univ, Key Lab Automobile Mat, Minist Educ, Sch Mat Sci & Engn, Changchun 130022, Peoples R China
[3] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China
[4] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China
关键词
Hybrid materials; Nanoporous metal; Polyaniline; Capacitors; Supercapacitors; CARBON MATERIALS; ENERGY-STORAGE; POLYANILINE; ELECTRODES; DEPOSITION; ROUTE; MNO2;
D O I
10.1016/j.jpowsour.2011.09.006
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
We report three-dimensional bicontinuous nanoporous Au/polyaniline (PANI) composite films made by one-step electrochemical polymerization of PANI shell onto dealloyed nanoporous gold (NPG) skeletons for the applications in electrochemical supercapacitors. The NPG/PANI based supercapacitors exhibit ultrahigh volumetric capacitance (similar to 1500 F cm(-3)) and energy density (similar to 0.078 Wh cm(-3)), which are seven and four orders of magnitude higher than these of electrolytic capacitors, with the same power density up to similar to 190W cm(-3). The outstanding capacitive performances result from a novel nanoarchitecture in which pseudocapacitive PANI shells are incorporated into pore channels of highly conductive NPG, making them promising candidates as electrode materials in supercapacitor devices combing high-energy storage densities with high-power delivery. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:325 / 329
页数:5
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