Sebastian Raab, M. Sc.
- Scientific Assistant
- Electrochemical characterization and modeling of PEM fuel cells
- Group:
Brennstoffzellen
- Room: 317
CS 50.40 - Phone: +49 721 608-47979
- sebastian raab ∂ kit edu
- 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"
Thesis title | Supervisor | Student | Period |
---|---|---|---|
Electrochemical analysis of catalyst degradation in low-temperature PEM fuel cells | as soon as possible | ||
Analysis of the influence of various material parameters on the degradation behavior of PEM fuel cells by means of electrochemical impedance spectroscopy | Vivianne Bommer |
completed 08/2024 | |
Optimization of operating parameters of PEM fuel cells and model parametrization | Tom Grom |
completed 07/2023 | |
Impedance-based characterization of PEM fuel cells | Maximilian Gruber |
completed 01/2022 |
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 | Typ | University lecturer |
---|---|---|
Batterie- und Brennstoffzellensysteme | Lecture (V) | Dr.-Ing. Andre Weber |
Publications and Conferences
Publikationen and Proceedings
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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.
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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.
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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).
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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).
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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
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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).
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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).
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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)
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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).
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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)
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S. Raab, T. Grom, A. Weber, „Optimization of electrochemical model parametrization for incremental PEMFCs”, ModVal Conference, Duisburg, 21.03.2023 - 23.03.2023 (Poster).
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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).
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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).
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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)
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