Evaluation of the humidification requirements of new proton exchange membranes for fuel cells [electronic resource]
Measurements of PEM fuel cell device performance were made with different gas inlet temperatures and relative humidity using a newly-designed test fixture. Significant improvement in device performance was observed when the fuel inlet temperature was increased above the operating temperature of the...
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Online Access |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Dept. of Energy ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1995.
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| Subjects: |
MARC
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| 245 | 0 | 0 | |a Evaluation of the humidification requirements of new proton exchange membranes for fuel cells |h [electronic resource] |
| 260 | |a Washington, D.C. : |b United States. Dept. of Energy ; |a Oak Ridge, Tenn. : |b distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, |c 1995. | ||
| 300 | |a 7 p. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
| 337 | |a computer |b c |2 rdamedia. | ||
| 338 | |a online resource |b cr |2 rdacarrier. | ||
| 500 | |a Published through the Information Bridge: DOE Scientific and Technical Information. | ||
| 500 | |a 05/01/1995. | ||
| 500 | |a "LA-UR--95-1359" | ||
| 500 | |a "CONF-950412--9" | ||
| 500 | |a "DE95012060" | ||
| 500 | |a Spring meeting of the Materials Research Society (MRS), San Francisco, CA (United States), 17-21 Apr 1995. | ||
| 500 | |a Vanderborgh, N.E.; Grot, S.A.; Hedstrom, J.C. | ||
| 520 | 3 | |a Measurements of PEM fuel cell device performance were made with different gas inlet temperatures and relative humidity using a newly-designed test fixture. Significant improvement in device performance was observed when the fuel inlet temperature was increased above the operating temperature of the cell. These measurements were then correlated to a model to describe energy and mass transport processes. Proton exchange membrane (PEM), fuel cells--the focus of this study--use an ion conducting polymer, especially polyperfluorosulfonic acid materials. These polymer materials, when imbibed with water, exhibit solution-like properties, but because the anions are chemically bound to the polymeric structure, the electrolyte is contained. Importantly, product water removal is simplified, as electrolyte dilution is not a concern. However, the proton transport rate is a function of the polymer geometry, which is set, in part, by the polymer water content. Consequently, dynamics of water flow are essential to understand the design of efficient conversion devices. | |
| 536 | |b W-7405-ENG-36. | ||
| 650 | 7 | |a Solid Electrolyte Fuel Cells. |2 local. | |
| 650 | 7 | |a Humidity Control. |2 local. | |
| 650 | 7 | |a Performance. |2 local. | |
| 650 | 7 | |a Temperature Dependence. |2 local. | |
| 650 | 7 | |a Sulfonic Acids. |2 local. | |
| 650 | 7 | |a Organic Polymers. |2 local. | |
| 650 | 7 | |a Test Facilities. |2 local. | |
| 650 | 7 | |a Synthesis Gas. |2 local. | |
| 650 | 7 | |a Hydrogen Fuel Cells. |2 local. | |
| 650 | 7 | |a Experimental Data. |2 local. | |
| 650 | 7 | |a Direct Energy Conversion. |2 edbsc. | |
| 710 | 2 | |a Los Alamos National Laboratory. |4 res. | |
| 710 | 2 | |a United States. |b Department of Energy. |4 spn. | |
| 710 | 2 | |a United States. |b Department of Energy. |b Office of Scientific and Technical Information. |4 dst. | |
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