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  1. No Access

    Article

    Extending operational range

    Fuel cells with acid-doped membranes must avoid liquid water and humid gas streams to prevent leaching of acid, and so are limited to operating above 120 °C, complicating start-up. Now, microporous membranes o...

    Dirk Henkensmeier in Nature Energy (2022)

  2. No Access

    Article

    Polybenzimidazole-Based High-Temperature Polymer Electrolyte Membrane Fuel Cells: New Insights and Recent Progress

    High-temperature proton exchange membrane fuel cells based on phosphoric acid-doped polybenzimidazole membranes are a technology characterized by simplified construction and operation along with possible integ...

    David Aili, Dirk Henkensmeier, Santiago Martin… in Electrochemical Energy Reviews (2020)

  3. No Access

    Article

    Spirobiindane-Based Poly(arylene ether sulfone) Ionomers for Alkaline Anion Exchange Membrane Fuel Cells

    In this study, spirobiindane-based poly(arylene ether sulfone)s with quaternary ammonium-functionalized side chains were synthesized as alkaline anion exchange membrane fuel cell (AEMFC) electrode binding mate...

    Jieun Choi, Jue-Hyuk Jang, Ji Eon Chae, Hee-Young Park… in Macromolecular Research (2020)

  4. No Access

    Article

    Sintering and electrical behavior of ZrP2O7–CeP2O7 solid solutions Zr1-xCexP2O7; x = 0–0.2 and (Zr0.92Y0.08)1-yCeyP2O7; y = 0–0.1 for application as electrolyte in intermediate temperature fuel cells

    ZrP2O7-CeP2O7 solid solutions, Zr1-xCexP2O7; x = 0–0.2 and (Zr0.92Y0.08)1-yCeyP2O7; y = 0–0.1, were prepared by partially replacing Zr4+ with Ce4+ and its effect on the phase composition, sintering behavior, micr...

    Sandeep K. Gautam, Akanksha Singh, Lakshya Mathur, Nitika Devi, Rajesh K. Singh… in Ionics (2019)

  5. Article

    Open Access

    Transition metal alloying effect on the phosphoric acid adsorption strength of Pt nanoparticles: an experimental and density functional theory study

    The effect of alloying with transition metals (Ni, Co, Fe) on the adsorption strength of phosphoric acid on Pt alloy surfaces was investigated using electrochemical analysis and first-principles calculations. ...

    Hee-Young Park, Dong-Hee Lim, Sung Jong Yoo, Hyoung-Juhn Kim… in Scientific Reports (2017)

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  6. No Access

    Chapter

    Techniques for PBI Membrane Characterization

    The chapter describes common methods for membrane characterization. While it does not go into theoretical depths, general explanations, limitations, practical notes, and critical comments are provided. Covered...

    Dirk Henkensmeier, David Aili in High Temperature Polymer Electrolyte Membrane Fuel Cells (2016)

  7. No Access

    Article

    Effect of membrane electrode assembly fabrication method on the single cell performances of polybenzimidazole-based high temperature polymer electrolyte membrane fuel cells

    Membrane electrode assemblies (MEAs) for a high temperature polymer electrolyte membrane fuel cell (HTPEMFC) were fabricated using acid-doped polybenzimidazole (PBI) as the electrolyte membrane and polytetrafl...

    JuYeon Lee, Jeawoo Jung, Jun Young Han, Hyoung-Juhn Kim… in Macromolecular Research (2014)

  8. No Access

    Article

    Sulfonation of PIM-1 — towards highly oxygen permeable binders for fuel cell application

    The development of alternative, non-fluorinated membranes for polymer electrolyte membrane fuel cells necessitates the co-development of a non-fluorinated electrode catalyst binder to ensure compatibility betw...

    Byoung Gak Kim, Dirk Henkensmeier, Hyoung-Juhn Kim… in Macromolecular Research (2014)

  9. No Access

    Article

    Synthesis and characterization of poly(benzimidazolium) membranes for anion exchange membrane fuel cells

    Poly(dimethyl benzimidazolium) iodides were synthesized from polybenzimidazole derivatives by permethylation. They were easily changed to OH−, CO3 2− and HCO3 − ion conducting elec...

    Hye-** Lee, Jieun Choi, Jun Young Han, Hyoung-Juhn Kim, Yung-Eun Sung… in Polymer Bulletin (2013)