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- Title
Rational design of layer-by-layer assembled polypyrrole-based nanocomposite film for high-performance supercapacitor.
- Authors
Kulandaivalu, Shalini; Sulaiman, Yusran
- Abstract
In this work, a novel layer-by-layer assembled nanocomposite film of polypyrrole/graphene oxide with polypyrrole/nanocrystalline cellulose (PPy/GO|PPy/NCC) was fabricated. The number of layers is crucial to obtain high-performance supercapacitor. The electrochemical performances and structural changes of PPy/GO|PPy/NCC nanocomposite before and after reduction were compared. The structure and morphology of these bilayers were analyzed using Fourier-transform infrared spectroscopy and field emission scanning electron microscopy, respectively. The polypyrrole/nanocrystalline cellulose was attached to the polypyrrole/graphene oxide layer firmly without any apparent defects and cracks. Moreover, the prepared bilayer film gave a surface area of 42.88 m2 g−1, much higher than bilayer after reduction and a mesoporosity system, which is suitable for energy storage studies. This supercapacitor device delivered a high specific capacitance of 562.9 F g−1 at 3 mV s−1 with a maximum specific energy of 19.3 W h kg−1 and a maximum specific power of 884.6 W kg−1.
- Subjects
POLYPYRROLE; FIELD emission electron microscopy; EMISSION spectroscopy; NANOCOMPOSITE materials; INFRARED spectroscopy; GRAPHENE oxide
- Publication
Journal of Materials Science: Materials in Electronics, 2020, Vol 31, Issue 6, p4882
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-020-03051-0