Identification of statistically distributed active SAA on a CCSS surface using zooming-in scanning electrochemical cell microscopy (SECCM) activity maps (C02)

• Subject Area: Technical Chemistry
• Term: since 2024
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 506711657

The aim of C02 is to experimentally measure the CCSS with the highest hydrogen evolution reaction (HER) activity. To achieve this, we will use scanning electrochemical cell microscopy (SECCM) to probe the HER electrocatalytic activity on a thin-film CCSS at the nanoscale. The hypothesis is that by measuring smaller areas of CCSS and thus a fewer number of SAA, the impact of the active SAA on the averaged recorded current will be higher. To prove this, we will use a so-called zooming-in approach in which we will decrease the measured area from 1 micrometer to 20 nm diameter. In the framework of the CRC, we will identify and characterize the CCSS areas with high electrocatalytic activity.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1625: Atomic-scale understanding and design of multifunctional compositionally complex solid solution surfaces
• Major Instrumentation: Glovebox
• Applicant Institution: Ruhr-Universität Bochum
• Project Head: Professorin Dr.-Ing. Corina Andronescu, since 1/2024