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Measurement and characterization of water cross-over in PEM fuel cells

Measurement and characterization of water cross-over in PEM fuel cells
PEM 燃料电池中水渗透的测量和表征
批准号：
372206-2008
负责人：
Bi, Xiaotao(Tony)
金额：
$1.82万
依托单位：
University of British Columbia
依托单位国家：
加拿大
项目类别：
Collaborative Research and Development Grants
财政年份：
2009
资助国家：
加拿大
项目状态：
已结题
起止时间：
2009-01-01 至 2010-12-31
来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=435135
关键词：
Measurementcharacterizationwatercrossover

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英文摘要
Fuel cell technology is one of the most promising candidates for achieving the fuel economy and emission reduction goals. One of the key technical callenges for polymer electrolyte membrane (PEM) fuel cells in automotive applications is the water management. The balance of water in a PEM fuel cell is critical to PEM fuel cell operation, and its implications are not yet fully understood. The membrane within a PEM cell needs to be fully hydrated in order to reduce ohmic losses caused by the resistance across the membrane. Thus cell or stack dehydration reduces the proton conductivity of the membrane. Too much water leads to flooding of the cell and which impedes the mass transfer of reactant gases, and block catalyst sites.
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