Deutsch
 
Benutzerhandbuch Datenschutzhinweis Impressum Kontakt
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Electrochemical Lithiation Cycles of Gold Anodes Observed by in Situ High-Energy X-ray Diffraction

MPG-Autoren
/persons/resource/persons125035

Bach,  Philipp Johannes
Applied and Analytical Chemistry Research Group, Universiteit Hasselt, Belgium;
Interface Structures and High-Temperature Reactions, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
Center for Electrochemical Sciences - CES, Ruhr-Universität Bochum, Universitätsstraße 150, Bochum, Germany;

/persons/resource/persons125342

Renner,  Frank Uwe
Applied and Analytical Chemistry Research Group, Universiteit Hasselt, Belgium;
Interface Structures and High-Temperture Reactions, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
Associated Lab IMEC Division IMOMEC, Diepenbeek, Belgium;

Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Bach, P. J., Valencia-Jaime, I., Rütt, U., Gutowski, O., Romero, A. H., & Renner, F. U. (2016). Electrochemical Lithiation Cycles of Gold Anodes Observed by in Situ High-Energy X-ray Diffraction. Chemistry of Materials, 28(9), 2941-2948. doi:10.1021/acs.chemmater.5b04719.


Zitierlink: http://hdl.handle.net/21.11116/0000-0001-B97C-4
Zusammenfassung
Significant developments of Li-ion batteries will be necessary to cope with the growing demands in electromobility or home storage of (sustainable) electrical energy. A detailed knowledge on the microscopic processes during battery cycling will be increasingly crucial for improvements. Involved phase changes at ambient temperature often involve metastable intermediate states, making both experimental observation and theoretical prediction of process pathways difficult. Here we describe an in situ high energy X-ray diffraction study following the initial alloying and dealloying of Li with an Au thin-film model anode using ionic liquid electrolyte. Six different crystalline alloy phases were observed to be involved in the cyclic phase transitions. Apart from the highest lithiated phase determined in this study, Li3Au, none of the observed phases could be related to known, thermodynamically stable Li-Au phases. Structural search calculations following the minima hopping method (MHM) allowed the assignment of these phases to distinct metastable Au-Li alloy unit cells. © 2016 American Chemical Society.