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Título: | Charge storage mechanism of MnO2 cathodes in Zn/MnO2 batteries using ionic liquid-based gel polymer electrolytes |
Autor: | Tafur, Juan P.; Abad, José; Román García, Elisa Leonor CSIC; Fernández Romero, Antonio J. | Palabras clave: | Ionic liquid-based gel polymer electrolytes MnO2 cathode Zinc batteries XPS |
Fecha de publicación: | nov-2015 | Editor: | Elsevier | Citación: | Electrochemistry Communications 60: 190-194 (2015) | Resumen: | Cathode reactions in Zn/MnO2 batteries using aqueous electrolytes have been usually interpreted by the reduction of Mn4 + to Mn3 + while protons and/or cations penetrate inside the cathode. However, until now, the MnO2 storage charge mechanism using a non-aqueous gel polymer electrolyte (GPE) has not been investigated. In this work, ionic liquid-based GPEs including BMIM Tf and ZnTf2 have been employed in Zn/MnO2 batteries. Different states of charge of MnO2 cathodes used in Zn/IL-GPE/MnO2 batteries have been analyzed by XPS and EDX techniques. XPS analysis showed that Mn4 + is reduced during the discharge process at the same time as Zn2 + cations are incorporated into the cathode. Besides, Zn2 + cations insertion is accompanied by triflate anions. | Versión del editor: | https://doi.org/10.1016/j.elecom.2015.09.011 | URI: | http://hdl.handle.net/10261/183643 | DOI: | 10.1016/j.elecom.2015.09.011 | ISSN: | 1388-2481 | E-ISSN: | 1873-1902 |
Aparece en las colecciones: | (ICMM) Artículos |
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