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Zuniga Martinez, J. A., Lucio Porto, R., Moreno Cortez, I. E., Brousse, T., Aguilar Martinez, J. A. & Lopez Pavon, L. A. (2018) MnPO4 center dot H2O as Electrode Material for Electrochemical Capacitors. Journal of the Electrochemical Society, 165 A2349–A2356. 
Added by: Richard Baschera (2018-08-23 08:07:56)   Last edited by: Richard Baschera (2018-08-23 08:14:01)
Type de référence: Article
DOI: 10.1149/2.1281810jes
Clé BibTeX: ZunigaMartinez2018
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Créateurs: Aguilar Martinez, Brousse, Lopez Pavon, Lucio Porto, Moreno Cortez, Zuniga Martinez
Collection: Journal of the Electrochemical Society
Consultations : 8/411
Indice de consultation : 3%
Indice de popularité : 0.75%
The preparation of MnPO4 center dot H2O and its study as electrode material for electrochemical capacitors is reported. The charge storage mechanism is pseudocapacitive and involves insertion of hydroxyl ions into the 1D tunnels of the crystalline structure of MnPO4 center dot H2O, that together with the diverse functional groups of this manganese phosphate allows the successive surface redox reactions. The active thickness is around 4.5 nm for one electron process. The coupled charge stored process leads to a high areal capacitance of 1350 mu Fcm(-2). The specific capacitance is 210 Fg(-1) in 3M KOH with a potential window of 0.6V and can increase up to 250 Fg(-1) with a potential window of 0.9V. MnPO4 center dot H2O-based electrodes show only a slight drop of 7% in specific capacitance in a symmetric cell configuration during the first 5000 cycles. (C) 2018 The Electrochemical Society.
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