...Malcolm Stein, IV; Chien-Fan Chen; Matthew Mullings; David Jaime; Audrey Zaleski; Partha P. Mukherjee; Christopher P. Rhodes Particle size plays an important role in the electrochemical performance of cathodes for lithium-ion (Li-ion) batteries. High energy planetary ball milling of LiNi 1/3 Mn 1/3...

... 12 11 2015 Cathodes Cell design Efficiency Modeling PEM fuel cells Bipolar plates in PEM fuel cells have important responsibilities of distributing the reactant gases, transporting current through the lands, removing the product gases and liquid water, and providing structural...

... , “ Performance of a Glass–Ceramic Sealant in a SOFC Short Stack ,” Int. J. Hydrogen Energy , 38 ( 1 ), pp. 588 – 596 . 10.1016/j.ijhydene.2012.07.025 [7] Vaidya , S. , and Kim , J.-H. , 2013 , “ Finite Element Thermal Stress Analysis of Solid Oxide Fuel Cell Cathode Microstructures ,” J. Power...

... state reaction and citrate process; i.e., a positive shift of the onset potential and increased ORR current at a disk electrode. The present catalyst was also associated with decreased ring current. Alkaline fuel cells Carbon Cathodes Oxygen Perovskites The ORR is one of the most...

... second-generation cathode catalyst. We found a maximum PD of 45 mW cm −2 at ambient temperature (20 °C), with a 1 M HCOOK and 2 M KOH fuel stream and oxygen at the cathode. With an air cathode, the maximum PD was 35 mW cm −2 . When we removed hydroxide from the fuel stream and used oxygen at the cathode...

... are difficult to elucidate from full-cell polarization (i.e., voltage versus current) behavior. This study outlines a strategy to use current and voltage relationships from anode half-cells, cathode half-cells, and hydrogen pump coupled with methanol crossover data and a mathematical model. In this way, all...

... conditions. The performance of chitosan membranes and Nafion 117 membranes measured from a single cell DMFC with Pt-Ru/C anode catalysts and Pt/C cathode catalysts showed that Nafion membranes have a better performance. This was because the current and peak power densities determined for Nafion membranes...

... treatment, a nanoporous domain containing lanthanum zirconate is formed at the cathode-electrolyte interface. The nanoporosity leads to an enhanced cathode performance while the formation of lanthanum zirconate degrades the mechanical stability of the interface. 11 02 2010 13 07 2011 15 12...

..., electrolyte thickness, porosities, and pore sizes. The analysis is carried out for a planar SOFC with YSZ electrolyte, LSM cathode, and Ni-YSZ anode, with thicknesses 20, 50, and 500 μm respectively, and with co-flow geometry. The predicted performance is validated with measured data found in the literature...

... expansion coefficient (TEC) increased remarkably with increasing Co content, but the TEC of SrTi 0.9 Co 0.1 O 3 was comparable with those of SOFC cathodes and anodes. Co doping of SrTiO 3 effectively increased electrical conductivity in air, whereas the conductivity of Co-doped SrTiO 3 in a reducing...

... while minimizing cell weight and volume. The cell construction is a liquid tin anode housed in a porous separator, an 8 mol % yttria stabilized electrolyte, and a strontium doped lanthanum magnate cathode. Experimentation was conducted on single cells at 1000 ° C . The JP-8 fuel used for experimentation...

... perovskite cathodes was investigated by impedance spectroscopy in symmetrical cell of the type electrode | electrolyte | electrode . “Metal-insulator” transition was found at 80 ° C in GdBaCo 2 O 6 − δ , whereas it was not observed in iron-doped sample GdBaCo 1.8 Fe 0.2 O 6 − δ due to the increase in oxygen...

... powder on a die-pressed anode pellet, followed by dip-coating of the electrolyte ScSZ slurry. The lanthanum strontium manganite (LSM)-ScSZ cathode and the samarium doped ceria (SDC) interlayer were formed on the anode-supported ScSZ electrolyte using the screen printing method. The lanthanum strontium...

...Mario L. Ferrari; Matteo Pascenti; Loredana Magistri; Aristide F. Massardo The Thermochemical Power Group (TPG) of the University of Genoa designed and installed a complete hybrid system emulator test rig equipped with a 100 kW recuperated micro gas turbine, a modular cathodic vessel located...

... of active membrane area, working near the ambient conditions is described. The influence on the DMFC performance of the methanol concentration in the fuel feed solution and of both anode and cathode flowrates was studied. Tailored membrane electrode assemblies (MEAs) were designed in order to select optimal...

... ( La 0.8 Sr 0.2 MnO 3 ) cathode were used as the material components. Secondary electron microscopy images indicated that vacuum infiltration method successfully generated the thin electrolyte layer (about 15 μ m ) with a structurally effective three phase boundaries. Fabricated unit cell showed...

... of the materials. Assuming that the contact angle ranges from 75 deg to 150 deg, the liquid water content and distribution in the cathode GDL were investigated in details. Numerical analysis showed that the hydrophobicity of the structure affects the water transportation in the fuel cell significantly. Hydrophobic...

... of carbon black mixed with an organic binder, frequently polytetrafluoroethylene, which is coated onto a sheet of macroporous carbon backing cloth or paper. GDL serves as a current collector that allows ready access of fuel and oxidant to the anode and the cathode catalyst surfaces, respectively...

...Utku Gulan; Hasmet Turkoglu; Irfan Ar In this study, the fluid flow and cell performance in cathode side of a proton exchange membrane (PEM) fuel cell were numerically analyzed. The problem domain consists of cathode gas channel, cathode gas diffusion layer, and cathode catalyst layer...

... to provide oxygen to the cathode. Roughly 45% fuel and oxidant utilization were demonstrated on a SOFC stack manufactured by Delphi Corporation (Troy, MI). These reactants offer high energy storage as well as an entirely self-contained power system with no exhaust streams. Such attributes are favorable...