| 质子交换膜燃料电池的组装(锁紧力)对其寿命性能的影响(英文) |
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| 引用本文： | 许帆,程璇,张颖,范钦柏.质子交换膜燃料电池的组装(锁紧力)对其寿命性能的影响(英文)[J].电化学,2008,14(2):190. |
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| 作者姓名： | 许帆 程璇 张颖 范钦柏 |
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| 作者单位： | 厦门大学化学化工学院化学系,厦门大学材料学院材料科学与工程系,厦门大学材料学院材料科学与工程系,美国气体技术研究院 福建厦门361005,福建厦门361005,固体表面物理化学国家重点实验室,福建厦门361005,福建厦门361005,美国伊利诺伊斯60018 |
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| 摘 要： | 系统考察质子交换膜燃料电池组装(锁紧力,0.45~11.3 MPa)对其性能和寿命的影响,并确定了最佳锁紧力.以最佳锁紧力(3.2 MPa)的单电池作2000 h寿命测试,根据该单电池不同运行时间下的极化和功率曲线分析,得到与其活化区对应的电化学参数.XRD检测表明,电池组装施加的锁紧力不但影响电池的接触电阻,而且还影响由MEA微观结构决定的电池反应动力学性能.在最佳锁紧力作用下运行2000 h后的单电池在大电流密度区出现了明显的性能衰减,这主要是由于催化剂的团聚效应引起的.但在非最佳锁紧力作用下,阴极催化剂的团聚作用远大于阳极催化剂.
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| 关 键 词： | 质子交换膜燃料电池 接触电阻 电池锁紧力 膜电极 寿命性能 |
| 收稿时间： | 2008-05-28 |
Influence of Assembly Force in a PEMFC under a Lifetime Test |
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| XU Fan,CHENG Xuan,ZHANG Ying,FAN Qin-bai.Influence of Assembly Force in a PEMFC under a Lifetime Test[J].Electrochemistry,2008,14(2):190. |
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| Authors: | XU Fan CHENG Xuan ZHANG Ying FAN Qin-bai |
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| Institution: | XU Fan1,CHENG Xuan2,3,ZHANG Ying2,FAN Qin-bai4(1.Department of Chemistry,College of Chemistry , Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China,2.Department of Materials Science , Engineering,College of Materials,3.State Key Laboratory for Physical Chemistry of Solid Surfaces,4.Gas Technology Institute,Des Plaines,IL 60018,USA) |
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| Abstract: | The lifetime performance was investigated by assembling the single cell of PEMFC under a series of holding forces ranging from 0.45 to 11.3 MPa and reassembled under optimal holding force.The polarization and power density curves were obtained during different periods of operating time up to 2000 hours and the fuel cell catalyst activation regions in the polarization curves were analyzed to evaluate the electrochemical kinetic parameters.The results revealed that the holding forces affected not only the int... |
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| Keywords: | proton exchange membrane fuel cell contact resistance assembly force membrane electrode assembly lifetime performance |
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