Dresden 2017 – wissenschaftliches Programm

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DF: Fachverband Dielektrische Festkörper

DF 9: Poster Session

DF 9.14: Poster

Dienstag, 21. März 2017, 14:00–16:00, P1C

Oxygen exchange behaviour of implanted singles crystals SrTiO₃ for energy storage applications — Max Stöber¹, •Charaf Cherkouk¹, Tilmann Leiseganga¹, Matthias Schelter², Jens Zosel², Slawomir Prucnal³, and Dirk C. Meyer¹ — ¹Institute for Experimental Physics, TU Bergakademie Freiberg, Germany — ²Kurt-Schwabe Institute for Measuring and Sensor Technology Meinsberg, Germany — ³Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden Rossendorf,Dresden, Germany

In this work a solid-state-air battery based on thin-film technology containing an oxygen cathode is addressed. Since the efficiency of metal-air batteries is significantly limited by the activation of oxygen reduction reaction (ORR) as well as the ion and electron conductivities, an adequate porosity and a controlled metal doping is required. The ion implantation of promising transition metal oxides is a key technology to achieve this goal. The single crystal SrTiO₃ were implanted with Ni, Ag, O₂ and N₂ ions. The time resolved measurements of oxygen exchange behaviour by means of coloumetric titration on the ion implanted single crystal SrTiO₃ surface were investigated. In order to understand the defect chemistry and structure of those samples after the ion beam implantation their morphology was studied for example by TEM and sputter XPS. It was shown that the quantitative measurement of oxygen reduction rate on Ni implanted samples revealed an increase on oxygen exchange rate compared to non-treated SrTiO₃ single crystals. Keywords: Energy, solid-state battery, SrTiO₃, ORR