Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 28, Issue 14, Pages 10674-10683Publisher
SPRINGER
DOI: 10.1007/s10854-017-6842-5
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Funding
- National Natural Science Foundation of China (NSFC) [51503092, 51663014]
- Foundation of Key Laboratory of Clay Mineral Applied Research of Gansu Province
- Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences [CMAR-04]
- Foundation for Innovation Groups of Basic Research in Gansu Province [1606RJIA322]
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Three-dimensional nitrogen-doped graphene/polyaniline hydrogels (RGNP) was synthesized by facile hydrothermal method with graphene oxide (GO) and polyaniline nanorods (PANI-NRs), and urea as the reducing agent and nitrogen source. The structures and morphologies of the composites were characterized by various techniques, and electrochemical properties were also investigated. X-ray photoelectron spectroscopy (XPS) demonstrated nitrogen atom was doped into graphene and scanning electron microscopy (SEM) indicated PANI-NRs fully inset into the three-dimensional graphene layers. The RGNP composite electrode exhibited the significantly improved electrochemical performances compared to the undoped equivalents or the separate components. The specific capacitance is up to 589.3 Fg(-1) at current density of 3 mA cm(-2) in 1 M H2SO4 electrolyte, which also displays superior pseudocapacitive cycling stability (retention of 80.5% after 500 cycles). In addition, good capacitance retention rate (80.2% at 30 mA cm(-2)) has been achieved. These results indicate that the RGNP composite electrode can be applied for high performance supercapacitor.
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