Progress in the US DOE fuel cell subprogram efforts in polymer electrolyte fuel cells

2008 ◽  
Vol 33 (14) ◽  
pp. 3894-3902 ◽  
Author(s):  
J MARCINKOSKI ◽  
J KOPASZ ◽  
T BENJAMIN
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
The Us

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.

Unexplained transport resistances for low-loaded fuel-cell catalyst layers

2014 ◽  
Vol 2 (41) ◽  
pp. 17207-17211 ◽  
Author(s):  
Adam Z. Weber ◽  
Ahmet Kusoglu
Keyword(s):  
Thin Film ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Mass Transport ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
Fuel Cell Catalyst ◽  
Catalyst Layers

Mass-transport limitations due to the resistances caused by the ionomer thin-film surrounding the catalyst sites must be mitigated to achieve the desired performance with low catalyst loadings, a key for the commercialization of polymer-electrolyte fuel cells.

Piezoelectric Microvalve for Flow Control in Polymer Electrolyte Fuel Cells

2006 ◽  
Author(s):  
Brian A. Bucci ◽  
Jeffrey S. Vipperman ◽  
William Clark ◽  
J. Peter Hensel ◽  
Jimmy Thornton ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Flow Rate ◽  
Polymer Electrolyte Fuel Cells ◽  
Department Of Energy ◽  
Energy Technology ◽  
Pressure Drops ◽  
Fuel Cell Stack ◽  
The U.S

Maldistribution of fuel across the cells of a fuel cell stack is an issue that can contribute to poor cell performance and possible cell failure. It has been proposed that an array of microvalves could promote even distribution of fuel across a fuel cell stack. A piezoelectric microvalve has been developed for this purpose. This valve can be tuned to a nominal flow rate (and failure position) from which the actuator would either increase or decrease the flow rate and fuel. The valve can successfully regulate the flow of fuel from 0.7 to 1.1 slpm of hydrogen in the range of temperatures from 80° to 100°C and has been tested over pressure drops from 0.5 to 1 psi. A bank of these valves is currently being tested in a four-cell stack at the U.S. Department of Energy National Energy Technology Laboratory.

scholarly journals Preparation of radiation-grafted powders for use as anion exchange ionomers in alkaline polymer electrolyte fuel cells

2014 ◽  
Vol 2 (14) ◽  
pp. 5124-5130 ◽  
Author(s):  
Simon D. Poynton ◽  
Robert C. T. Slade ◽  
Travis J. Omasta ◽  
William E. Mustain ◽  
Ricardo Escudero-Cid ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Anion Exchange ◽  
Polymer Electrolyte Fuel Cells ◽  
Alkaline Membrane Fuel Cell ◽  
Alkaline Polymer Electrolyte ◽  
Alkaline Membrane

The use of radiation-grafted anion exchange ionomer powders leads to surprisingly high alkaline membrane fuel cell performances.

Numerical Approach to the Optimization of Operating Conditions for Hydrogen Polymer Electrolyte Fuel Cells

2005 ◽  
Author(s):  
Junxiao Wu ◽  
Qingyun Liu ◽  
Hongbing Fang
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
Operating Conditions ◽  
Simulation Tool ◽  
Control Parameters ◽  
Optimal Solutions ◽  
Cell Simulation ◽  
Current Loading

An efficient and systematic approach for finding the optimal operating conditions of hydrogen polymer electrolyte fuel cells has been developed by combining an efficient optimization method and a validated multi-resolution fuel cell simulation tool. Four control parameters including cell temperature, cathode stoichiometry, cathode pressure and cathode relative humidity are used to build the optimization objective, which is defined as the maximum overall efficiency of the fuel cell system under ideal or realistic system assumptions. Through the design of experiment method, a set of sample simulations are first carried out using the fuel cell simulation tool. An analytic metamodel is then constructed using the radial basis function approach based on the simulation results. A feasible sequential quadratic programming scheme is then employed to optimize the metamodel to achieve the global optimal solutions. The study shows that different optimal solutions exist for different system assumptions, as well as different current loading levels, classified into small, medium and large current densities. The approach adopted in this study is generic and can be readily applied to more control parameters and further to the fuel cell design optimizations.

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