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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2184
Title: Deposition of Ni-NiO nanoparticles on the reduced graphene oxide filled polypyrrole: Evaluation as cathode catalyst in microbial fuel cells
Authors: Pattanayak P.
Papiya F.
Kumar V.
Pramanik N.
Kundu, Patit Paban
Published in: Sustainable Energy and Fuels
Abstract: Herein, we fabricated the in situ polymerization of pyrrole (Py) on reduced graphene oxide (rGO), formulated as a nanocomposite support matrix for the deposition of nickel-nickel oxide (Ni-NiO) nanoparticles (NPs), as a cost-effective cathode catalyst for application in microbial fuel cells. In the presence of an oxidant, pyrrole (Py) monomers were electrostatically adsorbed over the negatively charged rGO sheet, where the ?-? interactions among the Py monomers resulted in its polymerization as polypyrrole (PPy). The synergistic effects of components of the support matrix resulted in durable electrocatalytic activity for the ORR in the prepared Ni-NiO/PPy-rGO composite in neutral media. The prepared composites were characterized by Fourier transform infrared spectroscopy (FTIR), UV spectroscopy, Raman spectrometry (RAMAN), X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and the results confirmed the presence of Ni+ and Ni2+ ions in the synthesized nanocomposites. In addition, nickel-nickel oxide (Ni-NiO) nanoparticles (NPs) were homogeneously dispersed over this PPy-rGO sheet during their deposition through field-emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). Also, the synthesized nanocomposites, i.e., Ni-NiO/PPy-rGO (70:30), were electrochemically analyzed using cyclic voltammetric (CV), chronoamperometric (CA) and impedance spectroscopic (EIS) techniques to highlight its stability and efficacy as a nanocatalyst. In comparison with the conventional Pt/C catalyst (reduction potential at 0.521 V with -0.204 mA current), the superior stability and electrocatalytic activities of Ni-NiO/PPy-rGO (reduction potential of 0.535 V at -0.235 mA current) were observed via CV in the enhanced oxygen reduction reaction (ORR). In the microbial fuel cell (MFC), the cost-effective Ni-NiO/PPy-rGO nanocatalyst exhibited a higher current density and power density of 2134.56 mA m-2 and ?678.79 ± 34 mW m-2 in comparison to the commercial Pt/C catalyst (1788.2 mA m-2 and ?481.02 ± 24 mW m-2). Thus, overall, the present study illustrates the preparation and characterization, efficacy and electro-active stability of Ni-NiO/PPy-rGO as a cost-effective nanohybrid catalyst in single chambered MFCs during the ORR. © 2019 The Royal Society of Chemistry.
Citation: Sustainable Energy and Fuels (2019), 3(7): 1808-1826
URI: https://doi.org/10.1039/c9se00055k
http://repository.iitr.ac.in/handle/123456789/2184
Issue Date: 2019
Publisher: Royal Society of Chemistry
ISSN: 23984902
Author Scopus IDs: 57194512135
57195774457
57197697614
56324545100
35475516300
Author Affiliations: Pattanayak, P., Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata, 700009, India
Papiya, F., Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata, 700009, India
Kumar, V., Department of Civil and Environmental Engineering, Indian Institute of Technology, Patna Bihar, India
Pramanik, N., Department of Bio-System Science and Engineering, Indian Institute of Science (IISc), Bengaluru, India
Kundu, P.P., Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata, 700009, India, Department of Chemical Engineering, Indian Institute of Technology, Roorkee, 247667, India
Funding Details: Prasanta Pattanayak is thankful to the University Grants Commission (UGC, India) for providing the Rajiv Gandhi National Fellowship with Disabilities [No. F/2014-15/RGNF-2014-15D-GEN-WES-58763]. Farhan Papiya is thankful to the University Grants Commission (UGC-NET SRF). The ?nancial support from DST-SERB, Govt. of India for National Postdoctoral Fellowship (Sanction No. PDF/2016/001018) is duly acknowledged by V. Kumar. Nilkamal Pramanik is indebted to the National Postdoctoral Fellowship, DST-SERB (Sanction No. PDF/2016/001685). The authors duly acknowledge Dr Anirban Paul (Post Doctoral Research Associate of NCFlexE, Dept. of Chemical Engineering, IIT Kanpur; RDE operator). We are thankful to the reviewers for their valuable suggestion and comments that improved this paper.
Corresponding Author: Kundu, P.P.; Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92, A. P. C. Road, India; email: ppk923@yahoo.com
Appears in Collections:Journal Publications [CH]

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