[Zurück]


Zeitschriftenartikel:

A. Schröder, J. Fleig, J. Maier, W. Sitte:
"Inherent emf relaxation of electrochemical cells with nanocrystalline Ag electrodes";
Electrochimica Acta, 51 (2006), S. 4176 - 4181.



Kurzfassung englisch:
The open circuit voltage of the electrochemical cell Ag (nano)|solid silver electrolyte|Ag (macro) is found to be inherently unstable. Even under conditions which support the morphological stability of the arrangement of nanocrystalline silver, the particles grow significantly as soon as they function as electrodes; i.e. when they are in contact with a silver electrolyte and connected electronically at the same time. The process is shown to be due to electrochemical Ostwald ripening with the interfacial transfer of Ag+ through the Ag/electrolyte interface being the rate limiting step. Its activation energy is 0.01 eV. The decay is in good agreement with modelling results.


"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.1016/j.electacta.2005.11.048