Zobrazeno 1 - 10
of 52
pro vyhledávání: '"John W. Van Zee"'
Autor:
John W. Van Zee, Christian LeDoux, Trupti V. Kotbagi, Martin G. Bakker, Kevin H. Shaughnessy, Sefadzi Tay-Agbozo, Hyun-Seok Cho
Publikováno v:
Journal of Sol-Gel Science and Technology. 84:258-273
Described is the synthesis of metal (Ni, Cr, and Mn) doped macro/mesoporous carbon monoliths by co-polymerization of transition metal complexes with resorcinol/formaldehyde and subsequent pyrolysis. Two salen ligands were synthesized via reaction of
Autor:
John W. Van Zee, John W. Weidner, Pongsarun Satjaritanun, Sirivatch Shimpalee, Shinichi Hirano, S. Dutta
Publikováno v:
ECS Meeting Abstracts. :1593-1593
Augmentation of fuel cell performance at high current densities, particularly under automotive application, is important to improve the overall power density and to reduce the cost of proton exchange membrane fuel cell (PEMFC) systems. Primarily, the
Publikováno v:
ECS Transactions. 50:619-634
The main challenges for commercialization of fuel cells are cost and durability. Using off-the-shelf materials for system components in Proton Exchange Membrane Fuel Cells (PEMFCs) may lower the cost provided they do not compromise function, fuel cel
Autor:
Johnathon Farmer, Binh Duong, Sirivatch Shimpalee, Michael J. Martinez-Rodriguez, John W. Van Zee, Supapan Seraphin
Publikováno v:
Journal of Power Sources. 197:1-11
a b s t r a c t A gas diffusion layer (GDL) in a proton exchange membrane fuel cell may consist of several, materials of different porosities, with each material serving a specific set of functions. For example, samples analyzed in this work consiste
Autor:
Lawrence E. Gebhart, Stephen Snyder, E. J. Taylor, Sirivatch Shimpalee, John W. Van Zee, Holly Garich
Publikováno v:
ECS Transactions. 28:11-16
The need for smaller and faster electronic circuits is driving the design of printed circuit board (PCB) interconnects in the direction of finer pitch transmission lines, smaller diameter through holes and vias, and thicker boards with higher layer c
Autor:
John W. Van Zee, Jean St-Pierre, John R. Monnier, Douglas A. Blom, Shuguo Ma, Kevin D. Beard, Masato Ohashi
Publikováno v:
Electrochimica Acta. 55:7376-7384
Electrochemical and structural characteristics of various Pt–Pd/C bimetallic catalysts prepared by electroless deposition (ED) methods have been investigated. Structural analysis was conducted by X-ray diffraction spectroscopy, X-ray photoelectron
Publikováno v:
ECS Transactions. 33:1007-1015
Polymer Electrolyte Membrane fuel cell (PEMFC) is a promising power source for automobiles in the near future. Polymers are usually used as the sealing or gasket materials in PEM fuel cells and they are viscoelastic materials. The stress relaxation b
Publikováno v:
ECS Transactions. 33:1627-1635
Aniline as a possible contaminant in polymer electrolyte membrane fuel cells (PEMFCs) has been studied by several ex-situ techniques. The aniline isotherm for MEA shows more affinity to ion-exchange with the PEM than other monovalent such as sodium a
Publikováno v:
ECS Transactions. 25:357-367
Several techniques were used to characterize carbon cloth and carbon paper gas diffusion media (GDM). A technique for measuring the MacMullin number is described. This number provides the missing data to test the applicability of the commonly used Br
Publikováno v:
ECS Transactions. 3:21-30
In aluminum-hydrogen peroxide batteries, when an inert net is placed between two parallel plates through which the electrolyte flows, the flow field is altered severely. This affects the local current distribution, and this effect is very pronounced