Web of Science: 107 cites, Scopus: 112 cites, Google Scholar: cites
Low-cost flexible supercapacitors with high-energy density based on nanostructured MnO₂ and Fe₂O₃ thin films directly fabricated onto stainless steel
Gund, Girish S. (Institut Català de Nanociència i Nanotecnologia)
Dubal, Deepak P. (Institut Català de Nanociència i Nanotecnologia)
Chodankar, Nilesh R. (Shivaji University. Department of Physics)
Cho, Jun Y. (Seoul National University. Department of Materials Science and Engineering)
Gómez Romero, Pedro (Institut Català de Nanociència i Nanotecnologia)
Park, Chan (Seoul National University. Department of Materials Science and Engineering)
Lokhande, Chandrakant D. (Shivaji University. Department of Physics)

Data: 2015
Resum: The facile and economical electrochemical and successive ionic layer adsorption and reaction (SILAR) methods have been employed in order to prepare manganese oxide (MnO₂) and iron oxide (Fe₂O₃) thin films, respectively with the fine optimized nanostructures on highly flexible stainless steel sheet. The symmetric and asymmetric flexible-solid-state supercapacitors (FSS-SCs) of nanostructured (nanosheets for MnO₂ and nanoparticles for Fe₂O₃) electrodes with Na₂SO₄/Carboxymethyl cellulose (CMC) gel as a separator and electrolyte were assembled. MnO₂ as positive and negative electrodes were used to fabricate symmetric SC, while the asymmetric SC was assembled by employing MnO₂ as positive and Fe₂O₃ as negative electrode. Furthermore, the electrochemical features of symmetric and asymmetric SCs are systematically investigated. The results verify that the fabricated symmetric and asymmetric FSS-SCs present excellent reversibility (within the voltage window of 0-1 V and 0-2 V, respectively) and good cycling stability (83 and 91%, respectively for 3000 of CV cycles). Additionally, the asymmetric SC shows maximum specific capacitance of 92 Fg⁻¹, about 2-fold of higher energy density (41. 8 Wh kg⁻¹) than symmetric SC and excellent mechanical flexibility. Furthermore, the "real-life" demonstration of fabricated SCs to the panel of SUK confirms that asymmetric SC has 2-fold higher energy density compare to symmetric SC.
Nota: Número d'acord de subvenció MINECO/SEV-2013-0295
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Llengua: Anglès.
Document: article ; recerca ; publishedVersion
Publicat a: Scientific reports, Vol. 5 (July 2015) , art. 12454, ISSN 2045-2322

DOI: 10.1038/srep12454
PMID: 26208144


13 p, 2.4 MB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Institut Català de Nanociència i Nanotecnologia (ICN2)
Articles > Articles de recerca
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 Registre creat el 2019-09-23, darrera modificació el 2019-11-06



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