January 2014The picture shows the X-ray photoelectron spectra (Ta 4f) of a lithium ion conductor without and with a sputtered lithium layer. Since approximately six months this type of in situ experiments can be performed in our group. Here, it can be clearly seen that the Tantalum ion is reduced if the solid electrolyte is covered with Lithium (grey spectrum). With ongoing time, this reduction zone proceeds through the whole volume of the electrolyte and thus, the electronic conductivity is increased caused by partially or totally reduced Tantalum (small sketch down right). (Picture submitted by Sebastian Wenzel.) https://www.uni-giessen.de/en/faculties/f08/departments/physchem/janek/gallerypotm/pom2014/january-2014/viewhttps://www.uni-giessen.de/@@site-logo/logo.png
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January 2014
The picture shows the X-ray photoelectron spectra (Ta 4f) of a lithium ion conductor without and with a sputtered lithium layer. Since approximately six months this type of in situ experiments can be performed in our group. Here, it can be clearly seen that the Tantalum ion is reduced if the solid electrolyte is covered with Lithium (grey spectrum). With ongoing time, this reduction zone proceeds through the whole volume of the electrolyte and thus, the electronic conductivity is increased caused by partially or totally reduced Tantalum (small sketch down right). (Picture submitted by Sebastian Wenzel.)
