阳极加载稳恒磁场对PEMFC性能的影响

在工作面积为26.5 mm×26.5 mm的质子交换膜燃料电池(PEMFC)的阳极侧加载不同方向(与阳极侧平行、垂直)、不同强度(0、210、310、390 m T)的稳恒磁场,测出稳恒磁场源的磁场空间分布,得到在PEMFC阳极侧加载磁场对电池性能的影响。实验结果发现:一定强度范围内的磁场能够提高PEMFC的工作性能,但在不同磁场方向与不同磁场强度下,得到的PEMFC工作性能提高幅度有差异。当在PEMFC阳极侧加载垂直磁场时,其最大输出功率提高更大,平行磁场其次。当在阳极侧加载390 mT的磁场时,其PEMFC最大输出功率密度可以达到73.38 mW/cm~2。实验同时发现一定强度的加载磁场还可以提升PEMFC输出功率的稳定性。

Effects of static magnetic field loaded on anode side on performance of proton exchange membrane fuel cells

A proton exchange membrane fuel cell (PEMFC) was exposed under static magnetic field (SMF) of different directions (vertical and parallel to the anode) and magnetic densities (0,210,310,390 mT) to get space magnetic field distribution of SMF and investigate the influence of SFM loaded on anode on PEMFC performance.The results show that SMF with certain intensity improves the PEMFC output power,but the effect changes with the direction and intensity of the SMF.When the magnetic field direction is vertical to the anode,the output power is improved and a higher power density is obtained.Parallel magnetic field to the anode is less than that in vertical direction.When magnetic field strength of 390 mT is loaded to the anode,the maximum power density is 73.38 mW/cm2.The presence of certain intensity of magnetic field also improves the stability of PEMFC output power.