Sebastian Raab, M. Sc.

  • Adenauerring 20b
    76131 Karlsruhe

Research

Research project
  • "Production- and structure-optimized metallic flow field for bipolar plates" (ProStroM)
  • "Impedance based analysis and modeling of catalyst degradation in polymer electrolyte membrane fuel cells
Electrochemical characterization of PEM fuel cells
  • Electrochemical characterization of incremental polymer electrolyte membrane fuel cells (PEMFCs)
  • Development of test benches and cell housings for PEM fuel cells
  • Analysis of PEM fuel cells by stationary and dynamic measuring methods (polarization curves, electrochemical impedance spectroscopy,  cyclic voltammatry)
  • Detailed analysis of impedance spectra by the distribution of relaxation times (DRT)
  • Analysis of the influence of different fuel cell components (MEA, GDL, bipolar plates, flow fields etc.) on the cell performance
  • Analysis of the influence of different three-dimensional flow field structures on the cell performance
  • Application of accelerated stress tests (ASTs)
Modeling of PEM fuel cells
  • Modeling based on equivalent circuit models (ECM) and transmission line models (TLM)
  • Modeling of catalyst degradation
Other

since 2021 - Member of the KIT graduate school "UpGrade Mobility"

Bild
PEM-Brennstoffzellen-Messstand

Student assistents

Tasks Supervisor Student Period

Development PEMFC test bench

Sebastian Raab Marvin Dorn until 03/2021

Development PEMFC test bench

Automation of measurement data evaluation

Sebastian Raab Vivianne Bommer since 06/2021
Lecture assistance
Lecture Typ University lecturer
Lecture (V) Dr.-Ing. Andre Weber

Publications and Conferences

Publikationen and Proceedings

  1. S. Raab, A. Chuang, A. Weber, "In-Depth Analysis of the Impact of Ionomer Content on PEMFC Degradation By Combining Electrochemical Characterization Techniques and Transmission Line Modeling", ECS Transactions (2024), 114, 5, 337. DOI: 10.1149/11405.0337ecst.

  2. P. Oppek, S. Raab, A. Weber, "Spatially Resolved Analysis of the Influence of Three-Dimensional Flow Field Structures on Loss Processes in PEMFCs", ECS Transactions (2024), 114, 5, 427. DOI: 10.1149/MA2023-02371798mtgabs.

  3. S. Raab and A. Weber, “Deconvolution of Gas Diffusion Processes in Incremental Polymer Electrolyte Membrane Fuel Cells”, 27th European Electrolyzer & Fuel Cell Forum (EFCF), Proceedings (2023).

  4. T. Goosmann, P. Oppek, S. Raab, A. Weber, Impedance-based observation and quantification of water in PEMFCs, 27th European Electrolyzer & Fuel Cell Forum (EFCF), Proceedings (2023).

  5. S. Raab and A. Weber, “Dynamic characterization of incremental PEM Single cells at high relative humidities”, 25th European Fuel Cell Forum (EFCF), Proceedings (2021).

Conferences

  1. S. Raab, A. Chuang, A. Weber, "In-Depth Analysis of the Impact of Ionomer Content on PEMFC Degradation by Combining Electrochemical Characterization Techniques and Transmission Line Modeling", PRiME 2024, Honolulu, 06.-11.10.2024 (Presentation).

  2. P. Oppek, S. Raab, A. Weber, "Spatially Resolved Analysis of the Influence of Three-Dimensional Flow Field Structures on Loss Processes in PEMFCs", PRiME 2024, Honolulu, 06.-11.10.2024 (Presentation).

  3. Y. Fischer, P. Oppek, S. Raab, A. Weber, „Spatially Resolved Quantification of Diffusion Losses in a Segmented PEM Fuel Cell with adjustable Clamping Forces”, 20th Symposium on Modeling Experimental Validation of Electrochemical Energy Technologies (ModVal 2024), Baden, Schweiz,12.03.-14.03.2024 (Presentation)

  4. S. Raab und A. Weber, Deconvolution of Gas Diffusion Processes in Incremental Polymer Electrolyte Membrane Fuel Cells, 27th European Electrolyzer & Fuel Cell Forum (EFCF), 04.07.2023 - 04.07.2023 (Presentation).

  5. T. Goosmann, P. Oppek, S. Raab, A. Weber, Impedance-based observation and quantification of water in PEMFCs", 27th European Electrolyzer & Fuel Cell Forum (EFCF), Luzern, 04.07.-07.07.2023 (Poster)

  6. S. Raab, T. Grom, A. Weber, „Optimization of electrochemical model parametrization for incremental PEMFCs”, ModVal Conference, Duisburg, 21.03.2023 - 23.03.2023 (Poster).

  7. S. Raab, T. Goosmann, A. Weber, „Influence of three- dimensional flow field structures consisting of expanded metal meshes on the physicochemical loss processes in PEMFCs”, 241st ECS Meeting, Vancouver, 29.05.2022-02.06.2022. (Presentation).

  8. T. Goosmann, S. Raab, P. Oppek, A. Weber, E. Ivers-Tiffée, „Impedance-Based, Multi-physical DC-Performance-Model for a PEMFC Stack”, 241st ECS Meeting, Vancouver, 29.05.2022-02.06.2022 (Presentation).

  9. S. Raab und A. Weber, “Dynamic characterization of incremental PEM Single cells at high relative humidities”, 25th European Fuel Cell Forum (EFCF), 29.06.2021 - 02.07.2021. (Presentation)