【摘要】 通过在质子交换膜燃料电池(PEMFC)阳极侧分别垂直加载不同均匀度(南北极交替面、同一北极面)的同心圆磁场和不同梯度降的矩形单磁体与复合磁体,以此考察不同均匀度与不同磁场梯度降的磁场对PEMFC工作性能的影响。结果发现,在PEMFC阳极侧加载不同均匀度的磁场,都能不同程度地提高PEMFC的工作性能。当阳极侧垂直加载南北极交替的同心圆磁场时,PEMFC输出功率密度最好,达到69.71 mW/cm~2,功率密度提升百分比为7.9%,同一北极面磁场下的电池性能次之;当PEMFC置于不同梯度降(单磁体、复合磁体)磁场下时,其置于磁场梯度降大的复合磁体下的PEMFC输出功率密度较大,可以达到69.5 mW/cm~2,功率密度提升百分比为7.5%。更多还原

【Abstract】 The impacts of different uniform magnetic fields and magnetic gradient descending on the working property of a proton exchange membrane fuel cell(PEMFC) were studied by loading different uniform concentric circular magnetic fields,rectangle single magnet and composite magnet on the anode side of PEMFC. The results show that different uniform magnetic fields can improve the PEMFC working property. The output power density of the PEMFC reaches 69.71 mW/cm~2 increasing by 7.9% when alternating south-north pole concentric circular magnetic field is perpendicularly loaded on the anode side. The property of PEMFC takes the second place when the north pole magnetic fields are loaded. The output power density increases by 7.5% up to 69.5 mW/cm~2 when the PEMFC is posited under the larger magnetic gradient descending.更多还原