Journal
JOURNAL OF POWER SOURCES
Volume 272, Issue -, Pages 915-921Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2014.09.013
Keywords
Interfacial polymerization; Polyaniline; Hollow nano-capsule; Supercapacitor; Energy storage
Funding
- National Natural Science Foundation of China [21353003]
- Special Innovation Talents of Harbin Science and Technology [2013RFQXJ145]
- Fundamental Research Funds of the Central University (HEUCFZ)
- Natural Science Foundation of Heilongjiang Province [B201316]
- Program of International S&T Cooperation special project [2013DFA50480]
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A novel hollow polyaniline (PAN!) nano-capsule with holes on the wall has been synthesized via a facile interfacial polymerization (IP) method without using any templates. The intriguing microstructure of such nano-capsule has been investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). A possible growth mechanism of the PANI nano-capsule has also been proposed. To further explore its possible application for supercapacitor, the electrochemical performance of the PANI nano-capsule has been carried out by cyclic voltammetry (CV), galvanostatic discharge/charge and electrochemical impedance spectroscopy (EIS). The obtained PAN! nano-capsule electrode exhibits a high specific capacitance of 502 F g(-1) (at the current density of 5 mA cm(-2)) and excellent cycling stability, rendering it to be a promising material for supercapacitor applications. Such special hollow PANI nano-capsule with well-defined microstructure holds great promise not only for electrochemical energy storage, but also for sensors, actuators, drug carrier and other applications. (C) 2014 Elsevier B.V. All rights reserved.
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