Journal
JOURNAL OF POWER SOURCES
Volume 263, Issue -, Pages 259-267Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.04.039
Keywords
Supercapacitor; Areal capacitance; Conducting polymers; Graphene; Nanocomposites
Funding
- National Natural Science Foundation of China [21274082]
- National Natural Science Foundation of Shanxi Province [2012021021-3]
- Program for New Century Excellent Talents in University [NCET-10-0926]
- Scientific Research Start-up Funds of Shanxi University [020351801002]
Ask authors/readers for more resources
A simple and low-cost electrochemical codeposition method has been introduced to fabricate polypyrrole/graphene oxide (PPy/GO) nanocomposites and the areal capacitance of conducting polymer/GO composites is reported for the first time. Fourier transform infrared spectroscopy (FTIR), Transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) are implemented to determine the PPy/GO nanocomposites are successfully prepared and the interaction between PPy and GO. The as-prepared PPy/GO nanocomposites show the curly sheet-like morphology, superior capacitive behaviors and cyclic stability. Furthermore, the varying deposition time is implemented to investigate the impact of the loading amount on electrochemical behavior of the composites, and a high areal capacitance of 152 mF cm(-2) is achieved at 10 mV s(-1) CV scan. However, the thicker films caused by the long deposition time would result in larger diffusion resistance of electrolyte ions, consequently exhibit the relatively lower capacitance value at the high current density. The GCD tests indicate moderate deposition time is more suitable for the fast charge/discharge. Considering the very simple and effective synthetic process, the PPy/GO nanocomposites with relatively high areal capacitance are competitive candidate for supercapacitor application, and its capacitive performances can be easily tuned by varying the deposition time. (c) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available