...). As the core part of the membrane electrode assembly in HT-PEMFCs, the catalyst layer significantly affects the cost, performance, and lifetime of HT-PEMFCs. However, platinum (Pt) catalyst degradation and carbon corrosion are apparently accelerated because of the high-temperature and acid environment in HT...

... as the low operating temperature which corresponds to fast starting and power matching. However, the rare and expensive Pt resource greatly hinders the mass production of the fuel cell, and the development of highly active and durable non-precious metal catalysts toward the oxygen reduction reaction (ORR...

... collected by PaxiTech of coatings that were conducted in the Sono-Tek Laboratory with PaxiTech catalyst inks, and was under the direction of PaxiTech. Coatings were conducted in Sono-Tek lab and were also under the direction of PaxiTech. Analysis and data collection of coating results was conducted...

...Jinfu Ma; Yongning Liu The use of noble catalysts and ion exchange membranes make the design of a direct borohydride fuel cell (DBFC) stack complicate and limit its application. Therefore, the development of simple, cost effective construction for DBFC stacks is necessary. In this paper, a passive...

...Anthony C. Okafor; Hector-Martins C. Mogbo In this paper, the effects of gas flow rates and catalyst loading on polymer electrolyte membrane fuel cell (PEMFC) performance was investigated using a 50 cm 2 active area fuel cell fixture with serpentine flow field channels machined into poco graphite...

... electricity and high grade waste heat. The comparison of fuel cell performance with different metal-oxide based electrodes was investigated. The power densities of 584 mW cm -2 and 514 mW cm -2 at 520 °C and 570 °C respectively were found. The effect of electrode catalyst function, ethanol concentration...

...W. Sangarunlert; S. Sukchai; A. Pongtornkulpanich; A. Nathakaranakule; T. Luschtinetz Cell performance of formic acid/hydrogen peroxide (HCOOH/H 2 O 2 ) fuel cell, using commercial Pt-Ru/C, and prepared Pt-M/C (M = Ir, Mo, Co, Ag, W, Ni, Sn) bimetallic catalysts as anode catalysts...

... to measure the dynamic response of electrodes. Mass transfer behavior was analyzed using equations for diffusion in finite lengths of thin film electrolytes covering the catalyst surface area. Electrode structure parameters were measured using SEM images of the cross section of the membrane electrode...

.... Catalyst coated diffusion media (CCDM) refers to a cell architecture option where the electrode layers are coated on the GDM layers and then hot pressed to the membrane. Catalyst coated membrane (CCM) refers to an architecture where the electrodes are transferred directly onto the membrane. A cell...

...R. Giorgi; L. Giorgi; S. Gagliardi; E. Salernitano; M. Alvisi; Th. Dikonimos; N. Lisi; D. Valerini; M. F. De Riccardis; E. Serra The real market penetration of polymer electrolyte fuel cells is hindered by the high cost of this technology mainly due to the expensive platinum catalyst. Two...

...Xiao Yu; Jinliang Yuan; Bengt Sundén The catalyst layer (CL) of a proton exchange membrane fuel cell involves various particles and pores that span a wide range of length scales, from several nanometers to a few microns. The success of the CL design depends decisively on understanding the detailed...

... tantalum carbonitride. These results suggested that an appropriate oxidation of the TaC 0.58 N 0.42 was essential to enhance the catalytic activity for the ORR. 15 03 2010 15 07 2010 18 02 2011 18 02 2011 catalysts electrochemical electrodes proton exchange membrane fuel cells...

...A. Mary Remona; K. L. N. Phani Carbon-supported platinum and Pt–Pd alloy electrocatalysts with different Pt/Pd atomic ratios were synthesized by a microemulsion method at room temperature (metal loading is 10 wt % ). The Pt–Pd/C bimetallic catalysts showed a single-phase fcc structure and the mean...

...Joonguen Park; Shinku Lee; Sunyoung Kim; Joongmyeon Bae This paper discusses a numerical analysis of the heat and mass transfer characteristics in an autothermal methane reformer. Assuming local thermal equilibrium between the bulk gas and the surface of the catalyst, a one-medium approach...

...Tianli Zhu; Dennis Walsh; Joel DesJardins; Subir Roychoudhury; Franklin H. Holcomb; Carl A. Feickert Under a U.S. Army program, PCI has developed autothermal reforming catalysts for E85 to provide stable performance in the presence of fuel sulfur as well as corrosion inhibitors. The catalysts build...

...William E. Mustain; Hyea Kim; Vijai Narayanan; Tyler Osborn; Paul A. Kohl The electroless deposition of Pt x Ru 1 − x catalysts using hydrazine dihydrochloride or formic acid as the reducing agent in a modified Leaman bath was investigated. The effect of potential on the Pt x Ru 1 − x composition...

...A. Pozio; A. Cemmi; M. Carewska; C. Paoletti; F. Zaza Gas diffusion electrodes (GDEs), applied in polymer electrolyte fuel cells, are composed of a multilayer structure containing porous carbon materials and noble metal catalyst. Gas diffusion layer (GDL), a GDE component, consists of a thin layer...

...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...

... of methanol consumption at a fuel cell’s anode so that expensive bimetallic catalysts (such as Pt-Ru) would not be as essential to remedy the well-known sluggish kinetics and Pt catalyst deactivation tendencies of DMFCs. The test cells were constructed using partially hydrolyzed polyvinyl alcohol film...

...Raghuram Chetty; Keith Scott; Shankhamala Kundu; Martin Muhler Platinum based binary and ternary catalysts were prepared by thermal decomposition onto a titanium mesh and were evaluated for the anodic oxidation of methanol. The binary Pt:Ru catalyst with a composition of 1:1 gave the highest...