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Title

A synchrotron x-ray diffraction and hard x-ray photoelectron spectroscopy study of Zn negative electrodes at different charge and discharge states of Zn/MnO2 batteries using an ionic liquid-based gel polymer electrolyte

AuthorsAbad, José; Santos, Florencio; Tafur, Juan P.; Urbina, Antonio; Román García, Elisa Leonor ; González-Martínez, J. F.; Rubio-Zuazo, J. ; Castro, Germán R. ; Fernández Romero, Antonio J.
KeywordsZinc batteries
XRD
Ionic liquid-based gel polymer electrolytes
XPS
HAXPES
Issue Date30-Sep-2017
PublisherElsevier
CitationJournal of Power Sources 363: 199-208 (2017)
AbstractZn/MnO batteries including an ionic liquid-based gel polymer electrolyte (IL-GPE) have been discharged or discharged and then recharged reaching different states of charge. The Zn electrodes used in these Zn/MnO batteries are studied by HAXPES and synchrotron XRD techniques. Besides, HAXPES measurements are compared with the results obtained by a conventional XPS. Formation of Zn(OH) and ZnO is found in intermediate states of charge during charging and discharging. However, only ZnO is observed in the anode when a full discharging was carried out. Conversely, an entire charging process produces a complete reduction of all Zn species to metallic Zn. In addition, various techniques have confirmed the entrance of Triflate anions and NMP solvent molecules in the electrode, accompanying the Zn cations movement during the charging.
Publisher version (URL)https://doi.org/10.1016/j.jpowsour.2017.07.082
URIhttp://hdl.handle.net/10261/188693
DOIhttp://dx.doi.org/10.1016/j.jpowsour.2017.07.082
Identifiersdoi: 10.1016/j.jpowsour.2017.07.082
issn: 0378-7753
Appears in Collections:(ICMM) Artículos
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