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Goubard-Bretesche, N., Crosnier, O., Payen, C., Favier, F. & Brousse, T. (2015) Nanocrystalline FeWO4 as a pseudocapacitive electrode material for high volumetric energy density supercapacitors operated in an aqueous electrolyte. Electrochem. Commun. 57 61–64. 
Added by: Richard Baschera (2016-03-10 18:36:41)   Last edited by: Richard Baschera (2021-01-19 14:25:11)
Type de référence: Article
DOI: 10.1016/j.elecom.2015.05.007
Numéro d'identification (ISBN etc.): 1388-2481
Clé BibTeX: GoubardBretesche2015
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Catégories: MIOPS, ST2E
Mots-clés: Electrochemical capacitors, High density, Iron tungstate, Neutral aqueous electrolyte, performance, Pseudocapacitive behavior, Supercapacitor
Créateurs: Brousse, Crosnier, Favier, Goubard-Bretesche, Payen
Collection: Electrochem. Commun.
Consultations : 1/742
Indice de consultation : 5%
Indice de popularité : 1.25%
Iron tungstate (FeWO4) has been synthesized using two low-temperature synthetic routes and investigated as a new pseudocapacitive electrode material for supercapacitors operating in a neutral aqueous electrolyte. Its electrochemical properties are clearly related to the specific surface area and seem to originate from Fe3+/Fe2+ fast surface reactions. For FeWO4 obtained by polyol-mediated synthesis, a high volumetric capacitance of 210 (i.e. more than two times higher than that of activated carbon) was measured at 20 mV.s(-1) with less than 5\% fade over 10,000 cycles. Furthermore, unlike most of the previously investigated iron based electrodes, a unique pseudocapacitive behavior is observed, thus emphasizing the role of the crystallographic structure on the electrochemical signature. (C) 2015 Elsevier B.V. All rights reserved.
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