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Keywords: catalysts
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Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2022, 19(1): 010905.
Paper No: JEECS-21-1026
Published Online: April 22, 2021
... 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...
Journal Articles
Article Type: Technical Briefs
J. Electrochem. En. Conv. Stor. February 2012, 9(1): 014501.
Published Online: December 27, 2011
... dispersed in a “web” of carbon. None of the many methods of obtaining this web, such as pressing, knife edge or printing of the “paste” of carbon and platinum ensure satisfactory dispersion. In fact, the platinum can quite easily be clumped in agglomerations. Creating the catalyst layer in a manner...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2012, 9(1): 011004.
Published Online: December 19, 2011
...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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2012, 9(1): 011006.
Published Online: December 19, 2011
...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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. December 2011, 8(6): 061014.
Published Online: September 27, 2011
... 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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. December 2011, 8(6): 061005.
Published Online: September 26, 2011
...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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. December 2011, 8(6): 061003.
Published Online: September 23, 2011
... 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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2011, 8(4): 041010.
Published Online: March 31, 2011
.... 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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2011, 8(4): 041004.
Published Online: March 28, 2011
...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...
Journal Articles
Article Type: Technology Review
J. Electrochem. En. Conv. Stor. June 2011, 8(3): 034001.
Published Online: March 1, 2011
...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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. June 2011, 8(3): 031005.
Published Online: February 18, 2011
... 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. Many studies have been performed to develop non-platinum cathode catalysts for low-temperature fuel cells. Organometallic complexes...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2011, 8(1): 011001.
Published Online: October 13, 2010
...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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. October 2010, 7(5): 051018.
Published Online: July 20, 2010
...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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. October 2010, 7(5): 051002.
Published Online: July 8, 2010
...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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2010, 7(4): 041013.
Published Online: April 8, 2010
...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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2010, 7(4): 041003.
Published Online: April 5, 2010
...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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2010, 7(4): 041002.
Published Online: April 5, 2010
...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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. June 2010, 7(3): 031019.
Published Online: March 17, 2010
... 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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. June 2010, 7(3): 031011.
Published Online: March 12, 2010
...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...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2010, 7(1): 011020.
Published Online: November 11, 2009
... associated with the reforming process, the model represents a useful tool to address performances and durability issues in the design process of full scale catalytic reformers. The characteristic temperature peak along the catalyst channels, which is experimentally observed as a result of the competitive...