Stephan Wagner

TL;DR: In this paper, the doped Fe content in zeolitic imidazolate framework (ZIF)-8 precursors and achieved complete atomic dispersion of FeN4 sites, the sole Fe species in the catalyst based on Mosbauer spectroscopy data.

TL;DR: The superior proton-exchange membrane fuel cell performance of SnNC cathode catalysts under realistic, hydrogen–air fuel cell conditions, particularly after NH3 activation treatment, makes them a promising alternative to today’s state-of-the-art Fe-based catalysts.

TL;DR: In this article, MNC catalysts with a variety of secondary nitrogen precursors are addressed in order to unravel previously inaccessible relations between active site density, turnover frequency, and active site utilization.

TL;DR: In this paper, the activity and stability of a non-precious metal catalyst of type Fe-N-C in acidic media is reported. But the performance of this catalyst was not evaluated in a Direct Methanol Fuel Cell (DMFC).

TL;DR: This work addresses the importance of Mössbauer spectroscopy for the characterization of iron-containing electrocatalysts and important conclusions made by this technique on preparation, active site identification and degradation are summarized.