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首页> 外文期刊>International journal of green energy >On/off cycling test of low-temperature PEM fuel cell at fully humidified conditions
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On/off cycling test of low-temperature PEM fuel cell at fully humidified conditions

机译：低温PEM燃料电池在完全加湿条件下的开/关循环试验

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摘要

Accelerated stress testing is one of the most used approaches to characterize the performance and the degradation of the membrane electrode assembly (MEA) in low-temperature hydrogen polymer electrolyte membrane fuel cells (PEMFC). A standard JRC on/off testing procedure was used to characterize two sets of commercial MEAs, by ElectroChem and by PaxiTech, respectively. Performance characteristics prior to and after the on/off procedure were measured. The changes in the resistivity of the MEA were examined by electrochemical impedance spectroscopy (EIS). The EIS data were analyzed and interpreted by a suitable equivalent circuit that consisted of a resistor and the Voigt?s structure in series with constant phase elements. Water on the anode side and the cathode side of the PEMFC was collected during the on/off procedure. The fluoride emission rate was determined from the collected water to obtain information about the chemical degradation of the MEA samples.
机译：加速应力测试是表征低温氢聚合物电解质电解质膜燃料电池（PEMFC）中膜电极组件（MEA）的性能和劣化的最常用方法之一。标准JRC开/关测试程序用于分别通过电编和Paxitech来表征两组商业MEAS。测量开/关过程之前和之后的性能特性。通过电化学阻抗光谱（EIS）检查MEA电阻率的变化。通过与恒定相位元素串联的电阻器和VoigtΔS结构组成的合适等效电路分析和解释EIS数据。在开/关过程期间收集阳极侧的水和PEMFC的阴极侧。从收集的水中测定氟化物发射率，以获得有关MEA样品的化学降解的信息。

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