The transfer of technically relevant organic electrosyntheses from laboratory scale to production scale for the production of chemicals (power to chemicals) should lead to an increasing electrification of organic syntheses. The focus is on individual synthesis steps with the goal of high product yields and product selectivities while maintaining high energy efficiency.

My research focus is the experimental investigation and analysis of reaction and transport processes in electrolyzers for the electrosynthesis of a medical compound. Limitations for upscaling are identified. Strategies for optimizing the electrolyzer design and process conditions to achieve high performance (conversion, yield, selectivity, Faraday efficiency and energy efficiency) and long-term stability are developed.

• M. Kuettinger, P. A. Loichet Torres, E. Meyer, P. Fischer, “Properties of Bromine Fused Salts based on Quaternary Ammonium Molecules and their Relevance for Use in a Hydrogen Bromine Redox Flow Battery”, Chem. Eur. J., 28 (2022) e202103491. DOI: 10.1002/chem.202103491
• M. Kuettinger, R. Riasse, J. K. Wlodarczyk, P. Fischer, J. Tuebke, “Improvement of safe bromine electrolytes and their cell performance in H₂/Br₂ flow batteries caused by tuning the bromine complexation equilibrium”, J. Power Sources, 520 (2022) 230804. DOI: 10.1016/j.jpowsour.2021.230804
• J. K. Wlodarczyk, M. Kuettinger, A. K. Friedrich, J. O. Schumacher, “Exploring the thermodynamics of the bromine electrode in concentrated solutions for improved parametrisation of hydrogen–bromine flow battery models”, J. Power Sources, 508 (2021) 230202. DOI: 10.1016/j.jpowsour.2021.230202
• M. Kuettinger, P. A. Loichet Torres, E. Meyer, P. Fischer, J. Tuebke, “Systematic Study of Quaternary Ammonium Cations for Bromine Sequestering Application in High Energy Density Electrolytes for Hydrogen Bromine Redox Flow Batteries”, Molecules, 26 (2021) 2721. DOI: 10.3390/molecules26092721
• M. Kuettinger, R. Brunetaud, J. K. Wlodarczyk, P. Fischer, J, Tuebke, “Cycle behaviour of hydrogen bromine redox flow battery cells with bromine complexing agents”, J. Power Sources, 495 (2021) 229820. DOI: 10.1016/j.jpowsour.2021.229820
• K. Saadi, M. Kuettinger, P. Fischer, D. Zitoun, “Hydrogen‐Bromine Redox‐Flow Battery Cycling with Bromine Complexing Agent: On the Benefits of Nanoporous Separator vs. Proton Exchange Membrane”, Energy Technol., 9 (2021) 2000978. DOI: 10.1002/ente.202000978
• M. Kuettinger, J. K. Wlodarczyk, D. Daubner, P. Fischer, J. Tuebke, “High energy density electrolytes for H₂/Br₂ redox flow batteries, their polybromide composition and influence on battery cycling”, RSC Adv., 11 (2021) 5218-5229. DOI: 10.1039/D0RA10721B
• N.V. Roznyatovskaya, V.A. Rozynatovsky, C.C. Hoehne, M. Fühl, T. Gerber, M. Kuettinger, J. Noack, P. Fischer,
  K. Pinkwart, J. Tuebke, „The role of phosphate additive in stabilization of sulphuric-acid-based vanadium(V) electrolyte for all-vanadium redox-flow batteries”, J. Power Sources, 363 (2017) 234-243. DOI: 10.1016/j.jpowsour.2017.07.100
• J. Noack, G. Cognard, M. Oral, M. Kuettinger, N.V. Roznyatovskaya, K. Pinkwart, J. Tuebke, “Study of the Long-Term Operation of a Vanadium/Oxygen Fuel Cell”, J. Power Sources, 326 (2016) 137-145. DOI: 10.1016/j.jpowsour.2016.06.121
• N.V. Roznyatovskaya, T. Herr, M. Kuettinger, M. Fuehl, J. Noack, K. Pinkwart, J. Tuebke, “Detection of capacity imbalance in vanadium electrolyte and its electrochemical regeneration for all-vanadium redox-flow batteries”, J. Power Sources, 302 (2016) 79-83. DOI: 10.1016/j.jpowsour.2015.10.021
• F.T. Wandschneider, M. Kuettinger, J. Noack, P. Fischer, K. Pinkwart, J. Tuebke, H. Nirschl, “A coupled-physics model for the vanadium oxygen fuel cell”, J. Power Sources, 259 (2014) 125-137. DOI: 10.1016/j.jpowsour.2014.02.087