Nanocellulose-based materials as components of polymer electrolyte fuel cells

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

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

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2007.12.068 ◽

2008 ◽

Vol 33 (14) ◽

pp. 3894-3902 ◽

Cited By ~ 51

Author(s):

J MARCINKOSKI ◽

J KOPASZ ◽

T BENJAMIN

Keyword(s):

Fuel Cells ◽

Fuel Cell ◽

Polymer Electrolyte ◽

Polymer Electrolyte Fuel Cells ◽

The Us

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

Journal of Materials Chemistry A ◽

10.1039/c5ta01650a ◽

2015 ◽

Vol 3 (27) ◽

pp. 14318-14324 ◽

Cited By ~ 26

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.

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Transients of Polymer Electrolyte Fuel Cell and Hydrogen Tank

ASME 2009 3rd International Conference on Energy Sustainability, Volume 1 ◽

10.1115/es2009-90242 ◽

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.

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

Physical Chemistry Chemical Physics ◽

10.1039/c6cp00704j ◽

2016 ◽

Vol 18 (18) ◽

pp. 13066-13073 ◽

Cited By ~ 4

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.

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Polymer Electrolyte Membrane Technology for Fuel Cells

MRS Bulletin ◽

10.1557/mrs2005.165 ◽

2005 ◽

Vol 30 (8) ◽

pp. 587-590 ◽

Cited By ~ 29

Author(s):

Raj G. Rajendran

Keyword(s):

Fuel Cells ◽

Fuel Cell ◽

Polymer Electrolyte ◽

Polymer Electrolyte Membrane ◽

Pem Fuel Cell ◽

Perfluorosulfonic Acid ◽

Cell Systems ◽

Cell Technology ◽

Electrolyte Membrane ◽

Perfluorosulfonic Acid Membranes

AbstractThe concept of using an ion-exchange membrane as an electrolyte separator for polymer electrolyte membrane (PEM) fuel cells was first reported by General Electric in 1955. However, a real breakthrough in PEM fuel cell technology occurred in the mid-1960s after DuPont introduced Nafion®, a perfluorosulfonic acid membrane. Due to their inherent chemical, thermal, and oxidative stability, perfluorosulfonic acid membranes displaced unstable polystyrene sulfonic acid membranes.Today, Nafion® and other related perfluorosulfonic acid membranes are considered to be the state of the art for PEM fuel cell technology. Although perfluorosulfonic acid membrane structures are preferred today, structural improvements are still needed to accommodate the increasing demands of fuel cell systems for specific applications. Higher performance, lower cost, greater durability, better water management, the ability to perform at higher temperatures, and flexibility in operating with a wide range of fuels are some of the challenges that need to be overcome before widespread commercial adoption of the technology can be realized. The present article will highlight the membrane properties relevant to PEM fuel cell systems, the development history of perfluorosulfonic acid membranes, and the current status of R&D activities in PEM technology.

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Hydrocarbon-based fuel cell membranes: Sulfonated crosslinked poly(1,3-cyclohexadiene) membranes for high temperature polymer electrolyte fuel cells

Polymer ◽

10.1016/j.polymer.2015.07.030 ◽

2015 ◽

Vol 73 ◽

pp. 17-24 ◽

Cited By ~ 5

Author(s):

Suxiang Deng ◽

Mohammad K. Hassan ◽

Kenneth A. Mauritz ◽

Jimmy W. Mays

Keyword(s):

Fuel Cells ◽

High Temperature ◽

Fuel Cell ◽

Polymer Electrolyte ◽

Cell Membranes ◽

Polymer Electrolyte Fuel Cells ◽

Fuel Cell Membranes

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

Journal of Materials Chemistry A ◽

10.1039/c4ta02952f ◽

2014 ◽

Vol 2 (41) ◽

pp. 17207-17211 ◽

Cited By ~ 135

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.

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Piezoelectric Microvalve for Flow Control in Polymer Electrolyte Fuel Cells

Advanced Energy Systems ◽

10.1115/imece2006-14064 ◽

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.

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