直接甲醇燃料电池性能衰减分析

Performance attenuation analysis for a direct methanol fuel cell

从物料性质变化的角度,优化直接甲醇燃料电池(DMFC)稳定性运行的放电电流密度,探讨性能衰减的机理。DMFC在55℃下稳定运行的过程中,以保持较低的氢离子和燃料体积损失为标准,100 mA/cm2为最佳放电电流密度;性能衰减的主要因素为阳极氢离子的流失。

From the perspective of material property changes, the discharge current density of direct methanol fuel cell （ DMFC ） stability test was optimized, degradation mechanism of fuel cell performance was discussed. In order to keep the hydrogen ion and fuel volume loss in the lower level, 100 mA/cm^2 was chosen as the best discharge current density during DMFC stability test at 55℃ ,the main factor of cell performance degradation was anodic hydrogen ion loss.