High-Performance Ru 2 P Anodic Catalyst for Alkaline Polymer Electrolyte Fuel Cells
نویسندگان
چکیده
منابع مشابه
Catalyst supports for polymer electrolyte fuel cells.
A major challenge in obtaining long-term durability in fuel cells is to discover catalyst supports that do not corrode, or corrode much more slowly than the current carbon blacks used in today's polymer electrolyte membrane fuel cells. Such materials must be sufficiently stable at low pH (acidic conditions) and high potential, in contact with the polymer membrane and under exposure to hydrogen ...
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Hybrid polymer electrolyte fuel cells combine a proton exchange membrane PEM and anion exchange membrane AEM and exhibit unique advantages. The electrochemical performance and current limitations of a hybrid cell with an alkaline electrode fabricated on a Nafion membrane was characterized at 70°C as a function of relative humidity. To separate the individual characteristics of the AEM anode and...
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A polymer electrolyte membrane fuel cell with amorphous hydrated ruthenium dioxide (RuO2 " xH2O) supercapacitative sublayers inserted between the electrocatalyst layers and the Nafion membrane was fabricated to enhance the cell’s pulse power output. RuO2 " xH2O material showed a high capacitance ~ca. 230 F/g! and allowed a much higher pulse power output, which was demonstrated by cyclic voltamm...
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Polymer electrolyte membrane fuel cell is a promising zero-emission power generator for stationary/automotive applications. However, key issues, such as performance and costs, are still remained for an economical commercialization. Here, we fabricated a high-performance membrane electrode assembly (MEA) using an interfacial design based on well-arrayed micro-patterned membranes including circle...
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1 H and 19 F spin lattice relaxation rates of catalyst layer materials (CLM) of polymer electrolyte membrane fuel cells were measured by the fast field cycling (FFC) method. In contrast to ionomer membranes, 1 H relaxation rates of adsorbed water in both platinumKetjen black (Pt-KB) catalyst powder and CLM were strongly dependent on Larmor frequency approximated by a power law due to the strong...
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ژورنال
عنوان ژورنال: CCS Chemistry
سال: 2021
ISSN: 2096-5745
DOI: 10.31635/ccschem.021.202100810