PEM燃料电池的伏安特性及其影响因素  

The Performance and the Influencing Factors of PEM Fuel Cells

作　　者：孙红[1] 高晓佳[1] 张珂[1] 吴玉厚[1] 

机构地区：[1]沈阳建筑大学交通与机械工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2006年第5期867-871,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然基金(50576060);辽宁省教育厅基金(05L349);辽宁省教育厅基金(2004D201);沈阳建筑大学省级重点实验室开放基金(JX-200602;JX200603)

摘　　要：目的研究质子交换膜(PEM)燃料电池的操作参数的影响,提高PEM燃料电池的性能和稳定性,降低PEM燃料电池成本,促进其实用化.方法运用燃料电池测试站对有效面积为4 cm×4 cm的PEM燃料电池单体的性能和功率密度进行了实验测试.分析了电池加热温度,氢气和空气的加湿温度对PEM燃料电池性能和功率密度的影响.结果加湿温度低于电池温度时,升高加湿温度,电池性能得到改善;加湿温度高于电池温度时,高电流密度下升高加湿温度,电池性能降低;电池温度低于加湿温度时,升高电池温度,电池性能提高;电池温度高于加湿温度时,升高电池温度,电池性能降低.结论加湿温度和电池温度都为70℃时,电池的性能最优;因此实验结果对PEM燃料电池性能的优化具有重要意义.The operating parameters of PEM fuel cells are investigated so as to improve their performance and stability, decrease their cost and promote their practicality. The performance and power density of PEM fuel cells, whose effective reaction area is 4 cm × 4 cm, are tested by fuel cell test station. The effects of the fuel cell operating temperature and reaction gas humidification temperature on the performance and power density of PEM fuel cells are analyzed. The experimental results show that the performance of PEM fuel cells improves with the increase of the humidification temperature when the humidification temperature is below cell temperature; for high current density, the performance of PEM fuel cells decreases with the increase of humidification temperature when the humidification temperature is above cell temperature; the performance of PEM fuel cells increases with the increase of the cell temperature when the cell temperature is below the humidification temperature; the performance of PEM fuel cells decreases with the increase of the cell temperature when the cell temperature is above the humidification temperature. When the humidification temperature is equal to the cell temperature at 70℃, the performance of PEM fuel cell is optimum. The experimental results are very helpful to optimize the performance of PEM fuel cell.

关 键 词：质子交换膜(PEM) 燃料电池(FC) 操作参数 极化曲线 

分 类 号：TU986.2[建筑科学—城市规划与设计]