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Open AccessArticle

Graphene Oxide-Polypyrrole Coating for Functional Ceramics

1
Department of Materials, National Polytechnic University, Quito 170517, Ecuador
2
Center for Surface Science and Nanotechnology, Polytechnic University of Bucharest, 060042 Bucharest, Romania
3
Institute of Materials Technology, Universitat Politècnica de València, 46022 Valencia, Spain
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(6), 1188; https://doi.org/10.3390/nano10061188
Received: 2 June 2020 / Revised: 14 June 2020 / Accepted: 15 June 2020 / Published: 18 June 2020
Ceramic substrates were metallized with a Ni-Mo-P electroless coating and further modified with a polypyrrole (PPy) coating by the electrodeposition method. The properties of the polypyrrole coating were studied with the addition of a graphene oxide (GO) nanomaterial prior to the electrodeposition and its reduction degree. Fourier Transform Infrared Spectroscopy, Field-Emission Scanning Electron Microscopy, Raman spectroscopy and cyclic voltammetry were employed to characterize the properties of the coatings. The results indicated the successful synthesis of conductive electrodes by the proposed approach. The electrodeposition of PPy and its charge storage properties are improved by chemically reduced GO. The surface capacitive contribution to the total stored charge was found to be dominant and increased 2–3 fold with the reduction of GO. The chemically reduced GO-modified PPy exhibits the highest capacitance of 660 F g−1 at 2 mV s−1, and shows a good cyclability of 94% after 500 charge/discharge cycles. The enclosed results indicate the use of an NiMoP electroless coating, and modification with a carbon nanomaterial and conducting polymer is a viable approach for achieving functional ceramics. View Full-Text
Keywords: ceramic; NiMoP electroless deposition; electrodeposition; graphene oxide; polypyrrole; supercapacitor ceramic; NiMoP electroless deposition; electrodeposition; graphene oxide; polypyrrole; supercapacitor
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MDPI and ACS Style

Rosas-Laverde, N.M.; Pruna, A.I.; Busquets-Mataix, D. Graphene Oxide-Polypyrrole Coating for Functional Ceramics. Nanomaterials 2020, 10, 1188.

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