摘要
研究了城市主要大气污染物NOx和CO对质子交换膜燃料电池(PEMFC)性能的影响。电池恒流放电下的电压-时间曲线、极化曲线显示,体积分数为1×10-4左右的NOx对单电池性能造成严重的影响,但这种影响是可逆的。与此不同的是,往阴极通入7.9×10-5至1.56×10-3三种不同体积分数的CO 65 h后,电池性能没有明显的下降。气相色谱和质谱数据表明,Pt能快速将空气中的CO氧化成CO2。
Data are presented to testify how main air pollutants such as NOx and CO affect the performance of single proton exchange membrane fuel cell （PEMFC）. About 1. 0 × 10^-4 （V/V） NOxin air does harm to the cell voltage, but the harm tends to decrease to zero with the purging of pure air, as determined by voltage-time,voltage-amperage curves. CO with concentrations from 7.9×10^-5 to 1.56× 10^-3 （V/V） in air shows no damage to the cathode for 65 hours exposure. Results from GC and MS indicate that platinum in cathode acts as a good catalyst for the oxidation of CO by O2.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2005年第6期416-419,共4页
Environmental Pollution & Control
基金
科技部国际科技合作重点资助项目(2004DFB01500)
