Electrochemistry and electrocatalysis play prominent roles in the science and technology of renewable electrical energy storage and conversion. Storage and conversion is put into effect via molecular bond making and breaking, catalyzed at electrified interfaces of an ion conductor and an electrocatalyst material inside electrochemical reactors, such as Fuel Cells or Electrolyzers. For these reactions to occur with the smallest possible energy losses and the utmost atom efficiency, nanostructured multi-component solid electrode materials have proven indispensable, because they offer substantial advantages in atomic dispersion, often resulting in energy efficiency and performance benefits. The successful development of novel solid nanostructured electrocatalyst materials requires insight into the relation between their atomic-scale structure and their catalytic performance. Unraveling such relations is thus a scientific priority. Furthermore, comparison with and inspiration from molecular analogues of solid nanostructures have proven invaluable in the quest and understanding of their reactivity. In this talk, I will highlight some advances of our recent work on the design and understanding of structure-activity relations of nanostructured electrocatalytic materials and their liquid-solid interfaces. Examples will include new insights in noble Iridium oxide-based and non-noble FeNi-oxide-basde layered double hydroxide water oxidation (oxygen evolution reaction, OER) catalysts for use at electrolyzer anodes.

Water electrolysis on metal oxides for energy conversion: Materials and mechanisms

2019 Fall National Meeting

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