Prof. Dr. Jürgen Schumacher

Projects

• Shaping Porous Electrode Architecture to Improve Current Density and Energy Efficiency in Redox Flow Batteries / Project leader / ongoing
• High-throughput screening, synthesis and characterisation of active materials for flow batteries / Project leader / ongoing
• Doctoral network for microprocess engineering for electrosynthesis – New synthesis concepts for pharmaceutical / fine chemical industry / Project leader / ongoing
• Robust PEMFC MEA derived from model-based udserstanding of durability limitations for heavy duty applications / Project leader / completed
• Modelling for the search for new active materials for redox flow batteries / Project leader / completed
• Advanced CharacTerIsation of Fuel cell stacks for automotive applications / Project leader / completed
• Redox Flow Battery Campus / Project leader / completed
• SCCER Efficient Technologies and Systems for Mobility / Project leader / completed
• Swiss network project: "Photoelectrochemistry Competence Center (PECHOUSE/HyTech)" / Project leader / completed
• Designing multifunctional materials for proton exchange membrane fuel cells / Project leader / completed
• Development of a numerical model to analyse and design large-area PEM fuel cells / Project leader / completed

Publications

Articles in scientific journal, peer-reviewed

• Wlodarczyk, J. K., Schärer, R. P., Friedrich, A., & Schumacher, J. (2024). Upscaling of reactive mass transport through porous electrodes in aqueous flow batteries. Journal of the Electrochemical Society, 171(020544). https://doi.org/10.1149/1945-7111/ad258e
• Tsehaye, M. T., Mourouga, G., Schmidt, T. J., Schumacher, J., Velizarov, S., Van der Bruggen, B., Alloin, F., & Iojoiu, C. (2023). Towards optimized membranes for aqueous organic redox flow batteries : correlation between membrane properties and cell performance. Renewable and Sustainable Energy Reviews, 173, 113059. https://doi.org/10.1016/j.rser.2022.113059
• Wlodarczyk, J., Baltes, N., Friedrich, K. A., & Schumacher, J. (2023). Mass transport limitations in concentrated aqueous electrolyte solutions : theoretical and experimental study of the hydrogen-bromine flow battery electrolyte. Electrochimica Acta, 461(142640). https://doi.org/10.1016/j.electacta.2023.142640
• Mourouga, G., Schärer, R. P., Yang, X., Janoschka, T., Schmidt, T. J., & Schumacher, J. O. (2022). Physics-based 0D-U-I-SoC cell performance model for aqueous organic redox flow batteries. Electrochimica Acta, 415(140185). https://doi.org/10.1016/j.electacta.2022.140185
• Mourouga, G., Chery, D., Baudrin, E., Randriamahazaka, H., Schmidt, T. J., & Schumacher, J. O. (2022). Estimation of activity coefficients for aqueous organic redox flow batteries : theoretical basis and equations. iScience, 25(9), 104901. https://doi.org/10.1016/j.isci.2022.104901
• Herrendörfer, R., Cochet, M., & Schumacher, J. (2022). Simulation of mass and heat transfer in an evaporatively cooled PEM fuel cell. Energies, 15(8), 2734. https://doi.org/10.3390/en15082734
• Wlodarczyk, J. K., Küttinger, M., Friedrich, A. K., & Schumacher, J. O. (2021). Exploring the thermodynamics of the bromine electrode in concentrated solutions for improved parametrisation of hydrogen-bromine flow battery models. Journal of Power Sources, 508. https://doi.org/10.1016/j.jpowsour.2021.230202
• Vetter, R., & Schumacher, J. O. (2019). Experimental parameter uncertainty in proton exchange membrane fuel cell modeling - part II : sensitivity analysis and importance ranking. Journal of Power Sources, 439, 126529. https://doi.org/10.1016/j.jpowsour.2019.04.057
• Vetter, R., & Schumacher, J. O. (2019). Experimental parameter uncertainty in proton exchange membrane fuel cell modeling - part I : scatter in material parameterization. Journal of Power Sources, 438, 227018. https://doi.org/10.1016/j.jpowsour.2019.227018
• Vetter, R., & Schumacher, J. (2019). Free open reference implementation of a two-phase PEM fuel cell model. Computer Physics Communications, 234, 223–234. https://doi.org/10.1016/j.cpc.2018.07.023
• Capone, L., Marmet, P., Holzer, L., Dujc, J., Schumacher, J., Lamibrac, A., Büchi, F., & Becker, J. (2018). An ensemble Monte Carlo simulation study of water distribution in porous gas diffusion layers for proton exchange membrane fuel cells. Journal of Electrochemical Energy Conversion and Storage, 15(3), 31005. https://doi.org/10.1115/1.4038627
• Dujc, J., Forner-Cuenca, A., Marmet, P., Cochet, M., Vetter, R., Schumacher, J., & Boillat, P. (2018). Modelling the effects of using gas diffusion layers with patterned wettability for advanced water management in proton exchange membrane fuel cells. Journal of Electrochemical Energy Conversion and Storage, 15(2). https://doi.org/10.1115/1.4038626
• Holzer, L., Pecho, O., Schumacher, J., Marmet, P., Büchi, F. N., Lamibrac, A., & Münch, B. (2017). Microstructure-property relationships in a gas diffusion layer (GDL) for polymer electrolyte fuel cells, Part II : pressure-induced water injection and liquid permeability. Electrochimica Acta, 241, 414–432. https://doi.org/10.1016/j.electacta.2017.04.141
• Holzer, L., Pecho, O., Schumacher, J., Marmet, P., Stenzel, O., Büchi, F. N., Lamibrac, A., & Münch, B. (2017). Microstructure-property relationships in a gas diffusion layer (GDL) for polymer electrolyte fuel cells, Part I : effect of compression and anisotropy of dry GDL. Electrochimica Acta, 227, 419–434. https://doi.org/10.1016/j.electacta.2017.01.030
• Cendula, P., Tilley, S. D., Gimenez, S., Bisquert, J., Schmid, M., Grätzel, M., & Schumacher, J. (2014). Calculation of the energy band diagram of a photoelectrochemical water splitting cell. The Journal of Physical Chemistry C, 118(51), 29599–29607. https://doi.org/10.1021/jp509719d
• Schumacher, J., Eller, J., Sartoris, G., Colinart, T., & Seyfang, B. C. (2012). 2+1D modelling of a polymer electrolyte fuel cell with glassy-carbon microstructures. Mathematical and Computer Modelling of Dynamical Systems, 18(4), 355–377. https://doi.org/10.1080/13873954.2011.642390
• Wenger, S., Schmid, M., Rothenberger, G., Gentsch, A., Grätzel, M., & Schumacher, J. (2011). Coupled optical and electronic modeling of dye-sensitized solar cells for steady-state parameter extraction. The Journal of Physical Chemistry C, 115(20), 10218–10229. https://doi.org/10.1021/jp111565q
• Steinkamp, K., Schumacher, J., Goldsmith, F., Ohlberger, M., & Ziegler, C. (2008). A non-isothermal PEM fuel cell model including two water transport mechanisms in the membrane. Journal of Fuel Cell Science and Technology, 5(1). https://doi.org/10.1115/1.2822884
• Gerteisen, D., Hakenjos, A., & Schumacher, J. (2007). AC impedance modelling study on porous electrodes of proton exchange membrane fuel cells using an agglomerate model. Journal of Power Sources, 173(1), 346–356. https://doi.org/10.1016/j.jpowsour.2007.04.071
• Ziegler, C., Yu, H. M., & Schumacher, J. (2005). Two-phase dynamic modeling of the PEMFCs and simulation of cyclo-voltammograms. Journal of the Electrochemical Society, 152(8), 1555–1567. https://doi.org/10.1149/1.1946408
• Yu, H. M., Schumacher, J., Zobel, M., & Hebling, C. (2005). Analysis of membrane electrode assembly (MEA) by environmental scanning electron microscope (ESEM). Journal of Power Sources, 145(2), 216–222. https://doi.org/10.1016/j.jpowsour.2004.12.069
• Schmitz, A., Ziegler, C., Schumacher, J., Tranitz, M., Fontes, E., & Hebling, C. (2004). Modelling approach for planar self-breathing PEMFC and comparison with experimental results. Fuel Cells, 4(4), 358–364. https://doi.org/10.1002/fuce.200400034
• Ziegler, C., Schmitz, A., Tranitz, M., Fontes, E., & Schumacher, J. (2004). Modeling planar and self-breathing fuel cells for use in electronic devices. Journal of the Electrochemical Society, 151(12), 2028–2041. https://doi.org/10.1149/1.1810451
• Hakenjos, A., Tüber, K., Schumacher, J., & Hebling, C. (2004). Characterising PEM fuel cell performance using current distribution measurement in comparison with a CFD model. Fuel Cells, 4(3), 185–189. https://doi.org/10.1002/fuce.200400026
• Schumacher, J., Gemmar, P., Denne, M., Zedda, M., & Stüber, M. (2004). Control of miniature proton exchange fuel cells based on fuzzy logic. Journal of Power Sources, 129(2), 143–151. https://doi.org/10.1016/j.jpowsour.2003.10.010
• Dicker, J., Schumacher, J., Warta, W., & Glunz, S. (2002). Analysis of one-sun monocrystalline rear-contacted silicon solar cells with efficiencies of 22.1%. Journal of Applied Physics, 91(7), 4335. https://doi.org/10.1063/1.1446657
• Altermatt, P., Schumacher, J., Cuevas, A., Kerr, M., Glunz, S., King, R., Heiser, G., & Schenk, A. (2002). Numerical modeling of highly doped Si:P emitters based on Fermi–Dirac statistics and self-consistent material parameters. Journal of Applied Physics, 92(6), 3187–3197. https://doi.org/10.1063/1.1501743
• Schumacher, J., Altermatt, P., Heiser, G., & Aberle, A. (2001). Application of an improved band gap narrowing model to the numerical simulation of recombination properties of phosphorus-doped silicon emitters. Solar Energy Materials & Solar Cells, 65(1-4), 95–103. https://doi.org/10.1016/S0927-0248(00)00082-9
• Glunz, S., Schumacher, J., Warta, W., Knobloch, J., & Wettling, W. (1996). Solar cells with mesh-structured emitter. Progress in Photovoltaics, 4(6), 415–424. doi.org/10.1002/(SICI)1099-159X(199611/12)4:6<415::AID-PIP152>3.0.CO;2-1

Books, peer-reviewed

Schumacher, J. (2000). Numerical simulation of silicon solar cells with novel cell structures [Doctoral dissertation]. Universität Konstanz.

Book chapters, peer-reviewed

Wlodarczyk, J., Mourouga, G., Schärer, R. P., & Schumacher, J. (2023). Continuum modeling and simulation of flow batteries. In C. Roth, J. Noack, & M. Skyllas-Kazacos (Eds.), Flow batteries : from fundamentals to applications (pp. 379–412). Wiley. https://doi.org/10.1002/9783527832767.ch17

Written conference contributions, peer-reviewed

• Lopez Garcia, J., Peljo, P., & Schumacher, J. (2026, April 11). Qualitative regime behaviour in 1D models for redox- flow cells. 22nd Symposium on Modeling and Validation of Electrochemical Energy Technologies (ModVal), Lausanne, Switzerland, 10-11 March 2026. https://doi.org/10.21256/zhaw-36159
• Scoletta, E., Diana, M., Schärer, R. P., & Schumacher, J. O. (2026, March 11). The role of transient dynamics in PEM fuel cells : polarization hysteresis and impedance analysis. 22nd Symposium on Modeling and Experimental. Validation of Electrochemical Energy Technologies (ModVal), Lausanne, Switzerland, 10-11 March 2026.
• Schärer, R. P., & Schumacher, J. O. (2026, March 10). Unified microkinetic modelling of coupled oxygen reduction and degradation reactions in PEMFC cathode catalyst layers. 22nd Symposium on Modeling and Validation of Electrochemical Energy Technologies (ModVal), Lausanne, Switzerland, 10-11 March 2026.
• C. Vieira, L., A. Villarroel, P., Schärer, R. P., Kecsenovity, E., & Schumacher, J. O. (2026, March 10). Studying local inhomogeneities in zero-gap CO2 electrolysis via validated 2D multiphysics simulation. 22nd Symposium on Modeling and Experimental Validation of Electrochemical Energy Technologies (ModVal), Lausanne, Switzerland, 10-11 March 2026.
• Cinti, D., Franco, A. A., Schärer, R. P., & Schumacher, J. O. (2026, March 10). Coupled transport, Poisson and gFBV model for 1D double layer description of RFB electrode-electrolyte interface. 22nd Symposium on Modeling and Validation of Electrochemical Energy Technologies (ModVal), Lausanne, Switzerland, 10-11 March 2026.
• Scoletta, E., & Schumacher, J. (2025, March 11). A modelling framework for the simulation of coupled performance-degradation phenomena in proton exchange membrane fuel cells. 21st Symposium on Modeling and Experimental Validation of Electrochemical Energy Technologies (ModVal), Karlsruhe, Germany, 11-12 March 2025.
• Corte Vieira, L., Begal, F., Schärer, R. P., Kunkel, R., & Schumacher, J. (2025, March 11). Mechanistic study and parameter estimation of a multi-electron transfer organic synthesis. 21st Symposium on Modeling and Experimental Validation of Electrochemical Energy Technologies (ModVal), Karlsruhe, Germany, 11-12 March 2025. https://doi.org/10.21256/zhaw-32971
• Schärer, R. P., & Schumacher, J. (2024, June). A hybrid 3D/2D model for performance predictions of organic flow battery cells. The International Flow Battery Forum (IFBF), Glasgow, Scotland, 25-27 June 2024. https://doi.org/10.21256/zhaw-31722
• Schärer, R. P., & Schumacher, J. (2023, March 21). A transient non-isothermal cell performance model for organic redox flow batteries. 19th Symposium on Modeling and Experimental Validation of Electrochemical Energy Technologies (ModVal), Duisburg, Germany, 21-23 March 2023.
• Schärer, R. P., Wlodarczyk, J., & Schumacher, J. (2022). Reactive transport in porous electrodes : from pore-scale to macroscale descriptions. 18th Symposium on Modeling and Experimental Validation of Electrochemical Energy Technologies (ModVal), Hohenkammer, Germany, 14-16 March 2022. https://doi.org/10.21256/zhaw-24717
• Wlodarczyk, J., Cantu, B., Fischer, P., Küttinger, M., & Schumacher, J. (2019). An enhanced 1-D model of a hydrogen-bromine flow battery [Conference poster]. In U. Krewer, V. Laue, & A. Redeker (Eds.), 16th symposium on modeling and experimental validation of electrochemical energy technologies (ModVal 2019) : book of abstracts. Technische Universität Braunschweig. https://doi.org/10.21256/zhaw-2791
• Mourouga, G., Sansone, C., Alloin, F., Iojoiu, C., & Schumacher, J. (2019). A multicomponent diffusion model for organic redox flow battery membranes [Conference poster]. In U. Krewer, V. Laue, & A. Redeker (Eds.), 16th symposium on modeling and experimental validation of electrochemical energy technologies (ModVal 2019) : book of abstracts. Technische Universität Braunschweig. https://doi.org/10.21256/zhaw-2792
• Herrendörfer, R., & Schumacher, J. O. (2019). Advanced characterization of polymer electrolyte fuel cells using a two-phase time-dependent model [Conference poster]. In U. Krewer, V. Laue, & A. Redeker (Eds.), 16th symposium on modeling and experimental validation of electrochemical energy technologies (ModVal 2019) : book of abstracts. Technische Universität Braunschweig. https://doi.org/10.21256/zhaw-2790
• Piotrowski, J., Häffelin, A., Vetter, R., & Schumacher, J. (2018). Analysis and extension of a PEMFC model [Conference poster]. In E. Berg, F. Büchi, J. Eller, & L. Gubler (Eds.), 15th Symposium on Modeling and Experimental Validation of Electrochemical Energy Devices (ModVal 2018), Aarau, Switzerland, 12-13 April 2018. Paul Scherrer Institut. https://doi.org/10.3929/ethz-b-000240521
• Dujc, J., & Schumacher, J. (2013). Hierarchical modeling of polymer electrolyte membrane fuel cells. Proceedings of the 2013 COMSOL Conference in Rotterdam.
• Wenger, S., Schmid, M., Rothenberger, G., Grätzel, M., & Schumacher, J. (2009). Model-based optical and electrical characterization of dye-sensitized solar cells. 24th European Photovoltaic Solar Energy Conference and Exhibition : 2009 Hamburg Proceedings.
• Ziegler, C., Tranitz, M., & Schumacher, J. (2005). A model for planar self-breathing proton exchange membrane fuel cells in FEMLAB. Proceedings and User Presentations CD - COMSOL Multiphysics Conference 2005.
• Hebling, C., Burger, B., Hakenjos, A., Hesselmann, J., Münter, H., Pocza, D., Schumacher, J., Wittstatt, U., Zedda, M., & Zobel, M. (2004). PEM fuel cells for the power supply of electronic appliances [Conference paper]. The Fuel Cell World 2003 : 30 June-4 July 2003, Lucerne, Switzerland : Proceedings, 143–152.
• Schmitz, A., Ziegler, C., Schumacher, J., Tranitz, M., & Fontes, E. (2004). Modeling of the planar self-breathing PEMFC [Conference paper]. The Fuel Cell World 2003 : 30 June-4 July 2003, Lucerne, Switzerland : Proceedings, 297.
• Kühn, K., Ohlberger, M., Schumacher, J., Ziegler, C., & Klöfkorn, R. (2004). A dynamic two-phase flow model of proton exchange membrane fuel cells [Conference paper]. The Fuel Cell World 2003 : 30 June-4 July 2003, Lucerne, Switzerland : Proceedings, 283–296.
• Gerteisen, D., Hakenjos, A., & Schumacher, J. (2003). Investigation of the cathode active layer of PEM fuel cells using AC impedance spectroscopy [Conference paper]. 2nd European PEFC Forum 2003. Proceedings. Vol.1 : 30 June - 4 July 2003, Lucerne, Switzerland, 1, 271–282.
• Fontes, E., Byrne, P., Schumacher, J., Vasileiades, N., Parhammer, O., & Schmitz, A. (2003). Influence of the microstructure of the catalyst layer on the performance of the PEMFC cathode [Conference paper]. Nanotech 2003 : Technical Proceedings of the 2003 Nanotechnology Conference and Trade Show, 3, 478–481.
• Dicker, J., Sölter, J., Schumacher, J., Glunz, S., & Warta, W. (2000). Analysis of rear contacted solar cell structures for cost-effective processes and materials [Conference paper]. Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference - 2000 (Cat. No.00CH37036), 2000, 387–390. https://doi.org/10.1109/PVSC.2000.915847
• Altermatt, P., Schumacher, J., Cuevas, A., Glunz, S., King, R., Heiser, G., & Schenk, A. (2000). The extraction of the surface recombination velocity of Si:P emitters using advanced silicon models [Conference paper]. Sixteenth European Photovoltaic Solar Energy Conference 2000 : Proceedings of the International Conference Held in Glasgow, United Kingdom, 1 - 5 May 2000, 2, 102–105. http://ssrg.nicta.com/publications/papers/Altermatt_SCGKHS_00.pdf
• Dicker, J., Schumacher, J., Sölter, J., Zimmermann, W., Bau, S., & Warta, W. (2000). Numerical analysis of crystalline silicon thin film solar cells on perforated SiO2 barrier layers [Conference paper]. Sixteenth European Photovoltaic Solar Energy Conference 2000 : Proceedings of the International Conference Held in Glasgow, United Kingdom, 1 - 5 May 2000, 2, 1459–1462. https://www.osti.gov/etdeweb/biblio/20195361
• Schumacher, J., Altermatt, P., Heiser, G., & Aberle, A. (1999). Application of an improved band gap narrowing model to the numerical simulation of recombination properties of phosphorus doped silicon emitters [Conference paper]. Technical Digest - 11th International Photovoltaic Science and Engineering Conference : Sept. 20 - 24, 1999, Hokkaido, Japan, Royton Sapporo, 291–292.
• Wagner, B., & Schumacher, J. (1995). Light confinement and influence of electrical parameters on thin silicon solar cells [Conference paper]. In H. S. Stephens (Ed.), Thirteenth European Photovoltaic Solar Energy Conference : proceedings of the international conference, held at Nice, France, 23-27 October 1995, Volume 1 (p. 465).
• Schumacher, J., Sterk, S., Wagner, B., & Warta, W. (1995). Quantum efficiency analysis of high efficiency solar cells with textured surfaces [Conference paper]. In H. S. Stephens (Ed.), Thirteenth European Photovoltaic Solar Energy Conference : proceedings of the international conference, held at Nice, France 23 - 27 October, 1995, Volume 1 (pp. 96–99).
• Blieske, U., Sterk, S., Bett, A., Schumacher, J., Wettling, W., Marti, A., Terron, M. J., & Luque, A. (1994). LPE-GaAs and LBSF-Si solar cells for tandem concentrator application [Conference paper]. Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC), 2, 1902–1905. https://doi.org/10.1109/WCPEC.1994.520739

Other publications

• Dullak Angeloni, A., Schärer, R. P., & Schumacher, J. O. (2026, March 10). Local LBM implementation for electrochemical transport in OpenLB. 22nd Symposium on Modeling and Experimental. Validation of Electrochemical Energy Technologies (ModVal), Lausanne, Switzerland, 10-11 March 2026.
• Herrendörfer, R., Schumacher, J., Cochet, M., Büchi, F. N., & Boillat, P. (2020, November 23). 3-D simulation of water and heat transport processes in fuel cells during evaporative cooling and humidification. 7th SCCER Mobility Annual Conference, Online, 23 November 2020. https://doi.org/10.21256/zhaw-20916
• Cendula, P., Steier, L., Losio, P. A., Grätzel, M., & Schumacher, J. O. (2018). Analysis of optical losses in a photoelectrochemical cell : a tool for precise absorptance estimation. Advanced Functional Materials, 28(1), 1702768. https://doi.org/10.1002/adfm.201702768
• Vetter, R., & Schumacher, J. O. (2018, April 25). A new open-source PEMFC simulation tool for easy assessment of material parameterizations. 15th Symposium on Modeling and Validation of Electrochemical Energy Devices. ModVal 2018 : Book of Abstracts. https://doi.org/10.3929/ethz-b-000240521
• Boillat, P., Cochet, M., Büchi, F., Lamibrac, A., Mularczyk, A., Vetter, R., & Schumacher, J. O. (2017, September 15). Hydrogen for electromobility : a promising energy carrier. 4th Annual Conference SCCER Mobility, Zürich, 4. September 2017. https://doi.org/10.21256/zhaw-3627
• Vetter, R., & Schumacher, J. (2017, March 22). Toward predictive PEFC simulation : the importance of thermal and electrical contact resistance. 14th Symposium on Fuel Cell and Battery Modeling and Experimental Validation (ModVal 14), Karlsruhe, 2-3 March 2017. https://doi.org/10.21256/zhaw-3634
• Cendula, P., & Schumacher, J. (2016, October 13). Spectroscopic modeling of photoelectrochemical water splitting. COMSOL Conference, Munich, Germany, 12-14 October 2016. https://www.comsol.com/2016-user-presentations/multiphysics
• Schumacher, J., & Cendula, P. (2016, September). Simulation of photoelectrode impedance : extraction of water oxidation rate and recombination lifetime. International Conference on Advances in Semiconductors and Catalysts for Photoelectrochemical Fuel Production, Berlin, Germany, 5-6 September 2016.
• Dujc, J., Forner-Cuenca, A., Cochet, M., Schumacher, J., & Boillat, P. (2016, March). Simulation-based optimization of patterned GDL for Water Management in PEFC. 13th Symposium on Fuel Cell and Battery Modelling and Experimental Validation (ModVal 13) , Lausanne, 22-23 March 2016.
• Cendula, P., Steier, L., Tilley, S. D., Graetzel, M., & Schumacher, J. (2015, March). Optoelectronic modeling of hematite photoelectrodes. 12th Symposium on Fuel Cell and Battery Modeling and Experimental Validation (ModVal 12), Freiburg, Germany, 26-27 March 2015.
• Dujc, J., Capone, L., Schumacher, J., Biesdorf, J., & Boillat, P. (2015, March). Numerical simulation of liquid water saturation in cathode side gas diffusion layers of PEFCs. 12th Symposium on Fuel Cell and Battery Modeling and Experimental Validation (ModVal 12), Freiburg, Germany, 26-27 March 2015.
• Dujc, J., & Schumacher, J. (2014). A multi dimension approach for fast analysis of polymer electrolyte membrane fuel cells [Conference paper]. Proceedings of the European Hydrogen Energy Conference - EHEC 2014, 774–777.
• Schumacher, J., Eller, J., Sartoris, G., & Roos, M. (2007, October). Computationally efficient simulation of polymer electrolyte fuel cells and stacks. COMSOL Conference, Grenoble, France, 23-24 October 2007.
• Gerteisen, D., Hakenjos, A., & Schumacher, J. (2005). Model-based analysis of the current interrupt technique for the characterisation of porous gas diffusion electrodes in PEM fuel cells. Fuel Cell Forum, Lucerne, 4-8 July 2005.
• Ziegler, C., Phillips, S., Niemeyer, J., & Schumacher, J. (2005). A dynamic PEM-fuel cell stack model for system simulation. Fuel Cell Forum, Lucerne, 4-8 July 2005.
• Schumacher, J., & Wettling, W. (2001). Device physics of silicon solar cells. In M. D. Archer & R. Hill (Eds.), Clean electricity from photovoltaics (pp. 33–89). Imperial College Press. https://doi.org/10.1142/9781848161504_0002
• Dicker, J., & Schumacher, J. (1998). Halbleitersimulation von Solarzellen. Design & Elektronik, 1998(3), 57.

Oral conference contributions and abstracts

• Lapkin, A. A., Shuyuan, Z., Willimetz, D., & Schumacher, J. (2025). Ontological representation of experiments in electrochemistry and synthetic chemistry [Conference presentation]. https://doi.org/10.5281/zenodo.18016880
• Schärer, R. P., & Schumacher, J. (2025). Electrochemical interface model coupling oxygen reduction and degradation reactions in the cathode catalyst layer of a PEMFC [Conference presentation]. Proceedings of the 21st Symposium on Modeling and Experimental Validation of Electrochemical Energy Technologies, 37. https://doi.org/10.48584/opus-10318
• Schumacher, J., & Schärer, R. P. (2024, October 11). Insights in MEA operation behavior from a modeling perspective I : performance and degradation modelling of MEAs. International Hybrid Workshop “Fuel Cell MEA Design”, Freiburg, Germany, 10-11. October 2024. https://www.ise.fraunhofer.de/en/events-and-trade-fairs/fuel-cell-mea.html
• Schärer, R. P., & Schumacher, J. (2024). An open-source model for high-throughput flow battery cell performance predictions [Conference presentation]. 20th Symposium on Modeling and Experimental Validation of Electrochemical Energy Technologies. ModVal 2024 : Book of Abstracts, 50. https://doi.org/10.3929/ethz-b-000662523
• Noack, J., Baudrin, E., Fornari, R., Franco, A. A., Gerlach, D., Guan, X., Hamaekers, J., Maass, A., Menictas, C., Mourouga, G., Nirschl, H., Roznyatovskaya, N., Schärer, R. P., Schumacher, J., de Silva, P., Skyllas-Kazacos, M., Wlodarczyk, J., Wolf, A., & Yu, J. (2022). Modelling and simulation for the search for new active materials for redox flow batteries : results of the international project Sonar. 241st ECS Meeting, Vancouver, Canada, 29 May - 2 June 2022. https://doi.org/10.1149/MA2022-01461954mtgabs
• Wlodarczyk, J. K., Baltes, N., Friedrich, A., & Schumacher, J. (2021). Thermodynamics and diffusional mass transport problems in concentrated electrolytes : an application in H2/Br2 redox flow battery modeling [Conference presentation]. MODVAL 17 : Book of Abstracts, 31.
• Herrendörfer, R., Cochet, M., Boillat, P., & Schumacher, J. (2021). 3-D simulation of heat and water transport processes in PEFCs during evaporative cooling and humidification. EFCF 2021 Low-Temperature Electrolysers, Fuel Cells & H2 Processing, Online, 29 June - 2 July 2021.
• Schärer, R. P., Wlodarczyk, J., & Schumacher, J. (2021). Towards multiscale modelling of porous electrodes : connecting the meso- to the macroscopic scale [Conference presentation]. AMaSiS 2021 Book of Abstracts, 34. https://www.wias-berlin.de/workshops/amasis2021/resources/AMaSiS2021-book_of_abstracts.pdf
• Mourouga, G., Baudrin, E., Courty, M., Schmidt, T. J., & Schumacher, J. (2021, April 20). Towards rigorous thermodynamics in aqueous flow batteries : measuring activity coefficients with differential scanning calorimetry. 17th Symposium on Modeling and Experimental Validation of Electrochemical Energy Technologies (MODVAL 17), Online, 20-22 April 2021.
• Herrendörfer, R., Cochet, M., Boillat, P., & Schumacher, J. (2021, April 20). 3-D simulation of heat and water transport in PEFCs during evaporative cooling and humidification. 17th Symposium on Modeling and Experimental Validation of Electrochemical Energy Technologies (MODVAL 17), Online, 20-22 April 2021.
• Vetter, R., Herrendörfer, R., & Schumacher, J. O. (2019). Experimental parameter uncertainty in PEM fuel cell modeling. Abstracts. https://fdfc2019.sciencesconf.org/
• Vetter, R., & Schumacher, J. (2018, April 12). An open implementation of a two-phase PEMFC model in MATLAB. 15th Symposium on Modeling and Experimental Validation of Electrochemical Energy Devices (ModVal 2018), Aarau, Switzerland, 12-13 April 2018.
• Marmet, P., Capone, L., Lamibrac, A., Dujc, J., & Schumacher, J. (2016, March 22). Ensemble-based study of equilibrium liquid water distribution in PEM gas diffusion layer. 13th Symposium on Modeling and Experimental Validation of Fuel Cells, Electrolysers and Batteries, EPFL Lausanne, Switzerland, 22 March 2016.
• Schumacher, J., Dujc, J., Capone, L., Stenzel, O., Holzer, L., Lamibrac, A., & Büchi, F. (2015). Parameterisation of macrohomogeneous models of proton exchange membrane fuel cells. 12th Symposium on Fuel Cell and Battery Modeling and Experimental Validation (ModVal 12), Freiburg, Germany, 26-27 March 2015.
• Dujc, J., Stenzel, O., Holzer, L., Schumacher, J., Lamibrac, A., & Capone, L. (2015). Voxel-based modelling of water distribution in PEFC porous media. 12th Symposium on Fuel Cell and Battery Modeling and Experimental Validation (ModVal 12), Freiburg, Germany, 26-27 March 2015.
• Dujc, J., & Schumacher, J. (2014, March 18). A multi-dimensional model to analyze large-area PEM fuel cells. Book of Abstracts : 11th Symposium on Fuel Cell and Battery Modeling and Experimental Validation - ModVal 11.
• Schmid, M., Gentsch, A., Wenger, S., Rothenberger, G., & Schumacher, J. (2010, May). Time-dependent coupled optical and electric modeling of dye-sensitized solar cells. HOPV 2010 : Hybrid and Organic Photovoltaics Conference, Assisi, Italy, 23-26 May 2010.
• Wenger, S., Schmid, M., Rothenberger, G., Grätzel, M., & Schumacher, J. (2010, April). Understanding charge transport and recombination in dye-sensitized solar cells using an experimentally validated coupled optical and electrical model. MRS Spring Meeting, San Francisco, USA, 5-9 April 2010.
• Schumacher, J., & Safa, Y. (2010, March). Modeling two-phase flow in the gas diffusion layer of a proton exchange membrane fuel cell. 7th Symposium on Fuel Cell Modeling and Experimental Validation, Morges, 23-24 March 2010.
• Safa, Y., & Schumacher, J. O. (2009, December). Numerical modeling of the two-phase transport in a PEM fuel cell. Proceedings of the Third European Fuel Cell Technology & Applications Conference : Presented at 3rd European Fuel Cell Technology and Applications Conference, December 15 - 18, 2009, Rome, Italy.
• Schumacher, J., & Safa, Y. (2009, March). Numerical simulation of transport phenomena in PEM fuel cells. Algoritmy 2009 - Conference on Scientific Computing, Podbanske, Slovakia, 15-20 March 2009.
• Schmitz, A., Ziegler, C., Schumacher, J., & Tranitz, M. (2006, September). Modelling air-breathing PEMFC and validation by experimental characterisations. Fuel Cell Science and Technology Conference, Turin, Italy, 13-14 September 2006.
• Steinkamp, K., Haasdonk, B., Ohlberger, M., Schumacher, J., & Ziegler, C. (2006, September). A multidimensional dynamic model for simulation of PEM fuel cells. Fuel Cell Science and Technology Conference, Turin, Italy, 13-14 September 2006.
• Philipps, S., Ziegler, C., Niemeyer, J., & Schumacher, J. (2006, September). Modeling and identification of a PEM fuel cell stack. Fuel Cell Science and Technology Conference, Turin, Italy, 13-14 September 2006.

Research data

Vetter, Roman; Schumacher, Jürgen O., 2018. Free open reference implementation of a two-phase PEM fuel cell model. Mendeley Data. Available from: https://doi.org/10.17632/2msdd4j84c.1

go back