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O: Fachverband Oberflächenphysik

O 76: Focussed Session: Solid-liquid Interfaces II

O 76.4: Topical Talk

Donnerstag, 14. März 2013, 17:15–17:45, H31

Coupling electrochemistry to an ICP-MS - online-investigation of electrode material dissolution — •Karl Mayrhofer, Serhiy Cherevko, Angel Topalov, Anna Schuppert, Josef Meier, Aleksandar Zeradjanin, and Ioannis Katsounaros — Max-Planck-Institut für Eisenforschung, Düsseldorf, Germany

Continuous electrochemical flow reactors for efficient conversion of electrical energy into chemicals and vice versa, i.e. fuel cells and electrolyzers, become increasingly important for our energy sustainability and environmental concerns. The search for improved electrocatalyst materials, which constitute the core of electrochemical energy conversion devices, has been typically dominated by the optimization of kinetic activity of catalysts and efficiency of whole cells. However, also the stability of the materials is highly important for a potential commercialization, if not even more important, and should at least always be considered in parallel. In this presentation I will demonstrate how such investigations are done on a fundamental level, and what can be learned from these studies for large scale applications. The focus will be on the recent methodological developments from our group, in particular the scanning flow cell (SFC) coupled to an ICP-MS for studying noble metal catalysts as used in low-temperature fuel cell electrochemical reactors.