Comparative study of PEM fuel cell storage at -20°C after gas purging
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作者:
Hou, Junbo
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Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Res & Dev Ctr, Dalian 116203, Peoples R ChinaChinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Res & Dev Ctr, Dalian 116203, Peoples R China
Hou, Junbo
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Yu, Hongmei
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机构:Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Res & Dev Ctr, Dalian 116203, Peoples R China
Yu, Hongmei
Yi, Baolian
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机构:Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Res & Dev Ctr, Dalian 116203, Peoples R China
Yi, Baolian
Xiao, Yu
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机构:Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Res & Dev Ctr, Dalian 116203, Peoples R China
Xiao, Yu
Wang, Hongwei
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机构:Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Res & Dev Ctr, Dalian 116203, Peoples R China
Wang, Hongwei
机构:
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Res & Dev Ctr, Dalian 116203, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
The effect of water removal and freeze/thaw cycles on proton exchange membrane (PEM) fuel cells was investigated by comparative study of 20 on/off and freeze/thaw cycles after purging by reactant gas with relative humidity 58.0% at 25 degrees C. Within 20 cycles, the cell performance, electrochemical active surface areas, and electrochemical impedance spectra responses were analyzed by the mean squared deviation method. No performance decay caused by water freezing was observed, and the water amount in the cell was reduced to an extent by which freeze degradation was avoided. (c) 2006 The Electrochemical Society.