Publikationsliste Philipp Heizmann

• Originalarbeiten in wissenschaftlichen Fachzeitschriften
• Vorträge
• Konferenzbeiträge

Originalarbeiten in wissenschaftlichen Fachzeitschriften

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2023

• P. A. Heizmann, H. Nguyen, M. von Holst, A. Fischbach, M. Kostelec, F. J. Gonzalez Lopez, M. Bele, L. Pavko, T. Đukić, M. Šala, F. Ruiz-Zepeda, C. Klose, M. Gatalo, N. Hodnik, S. Vierrath, M. Breitwieser
  Alternative and facile production pathway towards obtaining high surface area PtCo/C intermetallic catalysts for improved PEM fuel cell performance
  2023 RSC Adv, Band: 13, Seiten: 4601 - 4611
• K. Seteiz, J. N. Häberlein, P. A. Heizmann, J. Disch, S. Vierrath
  Carbon black supported Ag nanoparticles in zero-gap CO2 electrolysis to CO enabling high mass activity
  2023 RSC Advances, Band: 27
• S. Koch, L. Metzler, S. Kilian, P. A. Heizmann, F. Lombeck, M. Breitwieser, S. Vierrath
  Toward scalable production: catalyst‐coated membranes (CCMs) for anion‐exchange membrane water electrolysis via direct bar coating
  2023 Advanced sustainable systems, Band: 7, Seite: 2200332

2022

• H. Nguyen, D. Sultanova, P. A. Heizmann, S. Vierrath, M. Breitwieser
  Improving the efficiency of fully hydrocarbon-based proton-exchange membrane fuel cells by ionomer content gradients in cathode catalyst layers
  2022 Materials Advances, Band: 23
• S. Koch, L. Metzler, S. K. Kilian, P. A. Heizmann, F. Lombeck, M. Breitwieser, S. Vierrath
  Toward Scalable Production: Catalyst-Coated Membranes (CCMs) for Anion-Exchange Membrane Water Electrolysis via Direct Bar Coating
  2022 Adv. Sustainable Syst., Seite: 2200332

2021

• H. Nguyen, F. Lombeck, C. Schwarz, P. A. Heizmann, M. Adamski, H-F. Lee, B. Britton, S. Holdcroft, S. Vierrath, M. Breitwieser
  Hydrocarbon-based Pemion™ proton exchange membrane fuel cells with state-of-the-art performance
  2021 Sustainable Energy and Fuels, Band: 5, Seiten: 3687 - 3699
  » Kurzfassung anzeigen« Kurzfassung verbergen
  Kurzfassung

  Non-fluorinated hydrocarbon ionomers feature distinct technical, cost, and environmental advantages over incumbent perfluorinated sulfonic acid (PFSA)-based ionomers: they offer improved thermo-mechanical properties at temperatures beyond 90 °C, likelihood of lower material cost, lower gas cross-over, and facile recycling of platinum group metals. In addition, fluorine-free hydrocarbon ionomers are less hazardous to the environment owing to the lack of (per)fluorinated precursors. Yet, the performance of hydrogen fuel cells with hydrocarbon-based ionomers and membranes has been historically largely inferior to the PFSA-based state of the art. In this study, we present wholly hydrocarbon fuel cells exceeding previous literature landmarks by a factor of nearly two, with peak power densities of 2.1 W cm−2 under H2/O2 (atmospheric pressure and 95% relative humidity), and 1.1 W cm−2 under H2/air (250 kPaabs and 50% relative humidity). This improvement was achieved by the use of Pemion™ – a sulfo-phenylated polyphenylene-based cation exchange material – as ionomer in the catalyst layer and as proton exchange membrane with a low thickness of 7 μm, and an optimization of cathode catalyst layer based on PtCo/C. Based on an in-depth study of electrochemical performance under various conditions vs. a state-of-the-art PFSA reference cell, the performances of Pemion™-based cells were found to be more sensitive to changes in relative humidity of inlet gases, but the detrimental influence of high temperatures on performance was significantly reduced. At an operation temperature of 110 °C, 250 kPaabs, and 50% relative humidity, the peak power density (0.96 W cm−2) was 8% higher than the short-side chain PFSA-based reference cell (0.89 W cm−2), highlighting the potential of Pemion™ for next-generation fuel cells for heavy-duty or aeronautic applications.
• B. Shanahan, K. Seteiz, P. A. Heizmann, S. Koch, J. Büttner, S. Ouardi, S. Vierrath, A. Fischer, M. Breitwieser
  Rapid wet-chemical oxidative activation of graphite felt electrodes for vanadium redox flow batteries
  2021 RSC Advances, Band: 11, Nummer: 51, Seiten: 32095 - 32105
• S. Koch, P. A. Heizmann, S. K. Kilian, B. Britton, S. Holdcroft, M. Breitwieser, S. Vierrath
  The effect of ionomer content in catalyst layers in anion-exchange membrane water electrolyzers prepared with reinforced membranes (Aemion+™)
  2021 J. Mater. Chem. A, Band: 9, Seiten: 15744 - 15754

Vorträge

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2023

• K. Seteiz, J. Häberlein, J. Disch, L. Bohn, P. Heizmann, S. Vierrath
  Carbon black supported Ag NPs for CO2 reduction to CO
  2023 29. Internes FMF-Kolloquium am FIT, Titisee, 10.10.2023

2022

• J. Häberlein, K. Seteiz, P. Heizmann, J. Disch, S. Vierrath
  Low loaded carbon supported Ag nanoparticles for CO2 to CO electrolysis showing high mass activities
  2022 Symposium Nano-BW 2022 des Kompetenznetzes „Funktionelle Nanostrukturen“, Bad Herrenalb, December, 6-7, 2022
• M. von Holst, L. Pavko, J. Stiegeler, P. A. Heizmann, A. Salihi, M. Gatalo, N. Hodnik, C. Klose, S. Vierrath, M. Breitwieser
  Reduced graphene oxide as durable carbon support for PtCo catalyst in proton exchange membrane fuel cells
  2022 Symposium Nano-BW 2022 des Kompetenznetzes „Funktionelle Nanostrukturen“, Bad Herrenalb, December, 6-7, 2022

Konferenzbeiträge

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2023

• K. Seteiz, J. Häberlein, P. Heizmann, J. Disch, S. Vierrath
  Carbon black supported Ag nanoparticles for CO2 to CO electrolysis enabling high mass activities
  2023 EFCF 2023, Low Temperature Fuel Cells, Electrolysers & H2 Processing Forum, Lucerne/Switzerland, July 4-7, 2023
• F. Pescher, M. von Holst, P. Heizmann, S. Vierrath, M. Breitwieser
  Novel Catalysts for Proton Exchange Membrane Fuel Cells via Fluidized Bed Atomic Layer Deposition
  2023 EFCF 2023, Low Temperature Fuel Cells, Electrolysers & H2 Processing Forum, Lucerne/Switzerland, July 4-7, 2023
• F. Pescher, M. von Holst, A. Salihi, J. Stiegeler, P. Heizmann, S. Vierrath, M. Breitwieser
  Platinum Catalysts for Proton Exchange Membrane Fuel Cells via Fluidized Bed Atomic Layer Deposition
  2023 ECS Meeting, Gothenburg / Sweden, 8.-12.10.2023

2022

• H. Nguyen, D. Sultanova, F. Lombeck, C. Schwarz, P. A. Heizmann, C. Klose, S. Vierrath, M. Breitwieser
  PEM fuel cells based on novel hydrocarbon ionomers: Approaching state-of-the-art performance
  2022 Fuel Cells, Gordon Research Conference, Smithfield, RI, USA, July 24 - 29, 2022
• M. von Holst, L. Pavko, J. Stiegeler, P. A. Heizmann, A. Salihi, M. Gatalo, N. Hodnik, C. Klose, S. Vierrath, M. Breitwieser
  Reduced graphene oxide as durable carbon support for PtCo catalyst in proton exchange membrane fuel cells
  2022 Fuel Cells, Gordon Research Conference, Smithfield, RI, USA, July 24 - 29, 2022
• S. Koch, S. K. Kilian, J. L. Disch, L. Metzler, P. A. Heizmann, Y. Han, M. Schulz, M. Breitwieser, S. Vierrath
  Water management in anion-exchange membrane water electrolyzers under dry cathode operation
  2022 GPR 2022, Golden, Colorado USA, June 12-17, 2022

2021

• H. Nguyen, F. Lombeck, C. Schwarz, P. A. Heizmann, M. Adamski, H-F. Lee, B. Britton, S. Holdcroft, S. Vierrath, M. Breitwieser
  A fluorine-free hydrocarbon-based proton exchange membrane fuel cell with state-of-the-art performance
  2021 23rd European Fuel Cell Forum (EFCF), Lucerne, Switzerland (Online), 2.-5.07.2021
• S. Koch, S. K. Kilian, P. A. Heizmann, M. Breitwieser, S. Vierrath
  Improving anion-exchange-membrane water electrolyzers by adjusting the ionomer content in the catalyst layers
  2021 23rd European Fuel Cell Forum (EFCF), Lucerne, Switzerland (Online), 2.-5.07.2021
• P. A. Heizmann, M. von Holst, H. Nguyen, F. Lombeck, C. Schwarz, C. Klose, M. Breitwieser, S. Vierrath
  Linking morphological properties of Pt/C catalysts to electrochemical performances for improved catalysis in fuel cells
  2021 23rd European Fuel Cell Forum (EFCF), Lucerne, Switzerland (Online), 2.-5.07.2021
• P. A. Heizmann, C. Klose, M. Breitwieser, S. Vierrath
  Quantitative STEM tomography for proton exchange membrane fuel cell apllications
  2021 Symposium Nano-BW, Bad Herrenalb, online, 07.10.2021
• K. Seteiz, B. Shanahan, P. A. Heizmann, S. Koch, J. Büttner, S. Ouardi, S. Vierrath, A. Fischer, M. Breitwieser
  Rapid wet-chemical oxidative activation of graphite felt electrodes for vanadium redox flow batteries
  2021 2nd Electrochemical Cell Concepts Colloquium (Virtual E3C), Oberhausen, Germany (Online), 6.5.2021
• P. A. Heizmann, M. von Holst, F. Lombeck, H. Nguyen, C. Klose, M. Breitwieser, S. Vierrath
  Understanding the platinum carbon-support interaction for improved catalysis in hydrogen fuel cells
  2021 9th NRW Nano Conference: Innovations in Materials and Applications, Münster, Germany (Online), 21.-23.04.2021

2020

• H. Nguyen, P. A. Heizmann, F. Lombeck, A. Belletti, B. Britton, S. Vierrath, M. Breitwieser
  Improving the Performance of All-Hydrocarbon PEM Fuel Cells Based on Pemion™ Ionomer
  2020 71st International Society of Electrochemistry, Belgrad, Serbia (Online), 30.08. – 04.09.2020