Continuous Electrochemical Processes

Dr. Wen Ju

 

Continuous electrochemical processes offer a promising pathway to harness green electricity as a sustainable driving force for chemicals valorization. These processes rely on redox reactions occurring directly at the electrode-electrolyte interface, where one species undergoes oxidation by losing electrons while another undergoes reduction by gaining electrons.

However, achieving optimal performance and scalability in electrochemical processes requires a comprehensive understanding, technical integration, and precise control of various influencing factors. These factors, including the reaction mechanism, electrocatalyst properties, electrode configuration, electrolyte composition, and operational parameters, intricately interact with one another. To address these complexities, a multidisciplinary approach is essential, integrating a range of electrochemical techniques such as cyclic voltammetry, chronoamperometry, and impedance spectroscopy with theoretical predictions using density functional theory and mass transfer modeling. Additionally, advanced characterization techniques like operando IR, Raman, and X-ray-based methods play a crucial role in elucidating fundamental mechanisms across atomic to device scales.

In our approach, the aim is to implement multidimensional fundamental research and facilitate the development of electrochemical processes for practical applications.

References: 

[1] S. Brückner, Q. Feng, W. Ju, D. Galliani, A. Testolin, M. Klingenhof, S. Ott, P. Strasser, Nat Chem Eng, 2024, 1, 229-239; Design and diagnosis of high-performance CO2-to-CO electrolyzer cells. 

[2] C. Li, W. Ju, S. Vijay, J. Timoshenko, B. Roldan Cuenya, A. Thomas, P. Strasser, et. al. , Angewandte Chemie, 2022, e202114707 ; Covalent Organic Framework (COF) Derived Ni-N-C Catalysts for Electrochemical CO2 Reduction: Unraveling Fundamental Kinetic and Structural Parameters of the Active Sites.

[3] W. Ju, A. Bagger, X. Wang, Y. Tsai, F. Luo, T. Möller, H. Wang, J. Rossmeisl, P. Strasser, ACS energy letters 4, 2019, 7, 1663-1671; Unraveling Mechanistic Reaction Pathways of the Electrochemical CO2 Reduction on Fe–N–C Single-Site Catalysts.