(Invited) The Impact of Work By Dr. Gottesfeld and Coworkers on the Commercial Introduction of the Fuel Cell Vehicle -- Calling the Shots in Polymer Electrolyte Fuel Cells

2019 ◽  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
Fuel Cell Vehicle ◽  
The Impact ◽  
Commercial Introduction

Wetting properties of porous high temperature polymer electrolyte fuel cells materials with phosphoric acid

2019 ◽  
Vol 21 (24) ◽  
pp. 13126-13134 ◽  
Author(s):  
J. Halter ◽  
T. Gloor ◽  
B. Amoroso ◽  
T. J. Schmidt ◽  
F. N. Büchi
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Fuel Cell ◽  
Phosphoric Acid ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
Polymer Electrolyte Fuel Cell ◽  
Wetting Behavior ◽  
Wetting Properties ◽  
Fuel Cell Materials

The influence of phosphoric acid temperature and concentration on the wetting behavior of porous high temperature polymer electrolyte fuel cell materials is investigated.

Nanocellulose-based materials as components of polymer electrolyte fuel cells

2019 ◽  
Vol 7 (35) ◽  
pp. 20045-20074 ◽  
Author(s):  
Carla Vilela ◽  
Armando J. D. Silvestre ◽  
Filipe M. L. Figueiredo ◽  
Carmen S. R. Freire
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Review Article ◽  
Polymer Electrolyte Fuel Cells ◽  
Present Review ◽  
Cell Systems

The present review article ventures into the question “Do the nanoscale forms of cellulose have potential in fuel cell systems?”

A phosphoric acid-doped electrocatalyst supported on poly(para-pyridine benzimidazole)-wrapped carbon nanotubes shows a high durability and performance

2015 ◽  
Vol 3 (27) ◽  
pp. 14318-14324 ◽  
Author(s):  
Zehui Yang ◽  
Tsuyohiko Fujigaya ◽  
Naotoshi Nakashima
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
High Temperature ◽  
Fuel Cell ◽  
Phosphoric Acid ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
Fuel Cell Performance ◽  
High Durability ◽  
And Performance

Low fuel cell performance and durability are still the two main obstacles to the commercialization of high-temperature polymer electrolyte fuel cells.

Transients of Polymer Electrolyte Fuel Cell and Hydrogen Tank

2009 ◽  
Author(s):  
Yun Wang ◽  
Xiaoguang Yang
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Dynamic Models ◽  
Cell Voltage ◽  
Polymer Electrolyte Fuel Cells ◽  
Dynamic Responses ◽  
Polymer Electrolyte Fuel Cell ◽  
Electrochemical Double Layer ◽  
The One

This paper seeks to develop 3D dynamic models for polymer electrolyte fuel cells (PEFCs) and hydrogen tanks, respectively. The dynamic model of PEFCs consists of multiple layers of a single PEFC and couples the various dynamic mechanisms in fuel cells, such as electrochemical double-layer discharging/charging, species transport, heat transfer, and membrane water uptake. The one of hydrogen tanks includes a 3D description of the hydride kinetics coupled with mass/heat transport in the hydrogen tank. Transient of fuel cell during step change in current is simulated. Dynamic responses of the cell voltage and heat generation rate are discussed. Hydrogen absorption process in the tank is considered. Temperature, reaction rate and heat rejection in the fuel tank are presented. Efforts are also made to discuss the coupling of these two systems in practice and associated issues.

Measurement of a new parameter representing the gas transport properties of the catalyst layers of polymer electrolyte fuel cells

2016 ◽  
Vol 18 (18) ◽  
pp. 13066-13073 ◽  
Author(s):  
Hiroshi Iden ◽  
Atsushi Ohma ◽  
Tomomi Tokunaga ◽  
Kouji Yokoyama ◽  
Kazuhiko Shinohara
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Transport Properties ◽  
Polymer Electrolyte ◽  
Gas Transport ◽  
Polymer Electrolyte Fuel Cells ◽  
Cell Performance ◽  
Fuel Cell Performance ◽  
Catalyst Layers ◽  
Gas Transport Properties

The optimization of the catalyst layers is necessary for obtaining a better fuel cell performance and reducing fuel cell cost.

Porous Materials as Fluid Distributors in Polymer Electrolyte Fuel Cells: A Computational Performance Analysis

2003 ◽  
Author(s):  
S. M. Senn ◽  
D. Poulikakos
Keyword(s):  
Mass Transfer ◽  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Reaction Rates ◽  
Flow Fields ◽  
Polymer Electrolyte Fuel Cells ◽  
Three Dimensions ◽  
Strong Argument ◽  
Computational Performance ◽  
The Impact

Commonly used ribbed flow-fields such as parallel and serpentine flow-fields in polymer electrolyte fuel cells (PEFC) exhibit limited mass transfer to the part of the diffusion and catalyst layer which is not covered by flow channels, leading to a considerably reduced reactant concentration and increased overpotential losses under the current collector shoulders. In this study, a novel concept is investigated, according to which the traditional ribbed flow delivery systems are replaced with permeable porous fluid distributors, which circumvent drawbacks such as those mentioned earlier. A complex mathematical model, including the conservation of mass, momentum, energy, species and electric current, using Butler-Volmer kinetics for electrochemical reaction rates, is numerically solved in three dimensions, to investigate the impact of different flow configurations on the performance of hydrogen fuel cells. It is found that cells with porous gas distributors generate substantially higher current densities and therefore are more advantageous with respect to mass transfer. Reduction in stack weight is another strong argument for using porous flow distributors in future applications.

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