Photo-Electrochemical Scanning Probe Microscopy

Photo-Electrochemical Scanning Probe Microscopy

Helmholtz Young Investigator Research Group

Our research group focuses on material synthesis and nanoscale understanding of solid-liquid interfaces for applications in catalysis and energy conversion. Key catalytic reactions, including CO2 conversion, are challenged by the degradation of the materials employed under operation conditions, performance-limiting inefficiencies at catalyst-electrode interfaces, and limited selectivity and efficiency of the catalysts for multi-electron and proton-coupled transformations.

Deficient nanoscale elucidation of structure-property relationships and dynamic material properties under reaction conditions hamper progress toward the synthesis of the next-generation of material systems.

We address these challenges by employing high spatio-temporal resolution scanning probe microscopy, including atomic force microscopy in liquid phase to decipher in-situ / operando the structural, electronic, and catalytic properties of selected materials under reaction conditions and external stimuli. Combined with a suite of advanced spectroscopic characterization tools, we elucidate nanoscale structure-property relationships and charge-transport phenomena at solid-liquid interfaces. These efforts are combined synergistically with the synthesis of advanced catalytic materials.

Group Members

Dr. Martin Munz Yujie Peng
Dr. Georg Simon Mael Brule
Dr. Zhen Yao
 .

Recent Publications

G.H. Simon, C. Kley and B. Roldan Cuenya: Potential‐Dependent Morphology of Copper Catalysts During CO2 Electroreduction Revealed by In Situ Atomic Force Microscopy. Angewandte Chemie International Edition 60 (5), 2561–2568 (2021).
G.H. Simon, C. Kley and B. Roldan Cuenya: Potentialabhängige Morphologie von Kupferkatalysatoren während der Elektroreduktion von CO2, ermittelt durch In‐situ‐Rasterkraftmikroskopie. Angewandte Chemie 133 (5), 2591–2599 (2021).

Talks

Kley, C.: Deciphering Electrocatalysts Under Reaction Conditions by in Situ Electrochemical Scanning Probe Microscopy. International Joint Symposium Challenge to Develop Innovative Photocatalyst , Online Event (2021)
Kley, C.: Deciphering Electrocatalysts Under Reaction Conditions by In Situ Electrochemical Scanning Probe Microscopy. Seminar, Helmholtz-Zentrum Berlin für Materialien und Energie, Online Event (2020)
Kley, C.: Nanoscale Catalysts’ Properties Revealed by in Situ Scanning Probe Microscopy. Symposium Catalysis Science – Quo Vadis?, Online Event (2020)
Kley, C.: Revealing Catalytic Materials at the Nanoscale: From UHV STM to In Situ Electrochemical AFM. The 81st Okazaki Conference, Forefront of Measurement Technologies for Surface Chemistry and Physics in Real-Space, k-Space, and Real-Time, Okazaki, Japan (2019)
Kley, C.: Revealing Catalytic Materials at the Nanoscale: From UHV STM to in Situ Electrochemical AFM. 3rd Sino-German Young Scientist Symposium on Structures & Dynamics at Surfaces, Dalian, China (2019)
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