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Interconnected polyaniline clusters constructed from nanowires: Confined polymerization and electrochemical properties

Published online by Cambridge University Press:  24 September 2014

Qingxia Cui ,
Hongyu Mi ,
Jieshan Qiu ,
Chang Yu  and
Zongbin Zhao
Qingxia Cui
Affiliation:
Key Laboratory of Petroleum and Gas Fine Chemicals, Educational Ministry of China, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, People's Republic of China
Hongyu Mi*
Affiliation:
Key Laboratory of Petroleum and Gas Fine Chemicals, Educational Ministry of China, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, People's Republic of China
Jieshan Qiu
Affiliation:
Carbon Research Laboratory, School of Chemical Engineering, State Key Lab of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
Chang Yu*
Affiliation:
Carbon Research Laboratory, School of Chemical Engineering, State Key Lab of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
Zongbin Zhao*
Affiliation:
Carbon Research Laboratory, School of Chemical Engineering, State Key Lab of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
*
a)Address all correspondence to these authors. e-mail: [email protected]
b)e-mail: [email protected]
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Abstract

By using microemulsion-mediated solvothermal method in the presence of camphorsulfonic acid as a dopant, self-aggregated polyaniline (PANI) nanowires were synthesized and further organized into three-dimensional cluster-connected networks. So-formed PANI exhibited a hierarchically porous structure, which was significantly different from those obtained by conventional chemical oxidation method, hydrothermal method, and other reported methods. Compared with nanofibers presented in this study, the nanowires in the clusters had a great decrease in diameter from ∼60 to ∼15 nm due to the space-confined polymerization. In addition, the size of the clusters could be easily adjusted by altering the dopant/monomer molar ratio. A probable assembly mechanism for such an interesting morphology was proposed. Used as an electrode material, PANI clusters showed high specific capacitances (510 and 368 F g−1 at 0.5 and 2 A g−1, respectively) and improved cycling stability (66% capacitance retention over 1000 cycles) as compared to PANI fibers and particles obtained by other methods, which may be related to its unique morphology and high doping level.

Keywords

polyanilinenanostructureenergy storage
Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 20 , 28 October 2014 , pp. 2408 - 2415
Copyright
Copyright © Materials Research Society 2014 

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