针对阴极通纯氧气或空气两种情况,实验研究了温度及化学计量比的变化对反应面积为9 cm2、具有平行流场的PEMFC性能的影响.结果表明:升高电池温度可提高PEMFC的性能及极限电流密度;在本实验条件下,为提高电池性能,阴极通纯氧时,阳极化学计量比/阴极化学计量比应高于1.5/3.0,通空气时,两者之值应高于3.0/6.0;相对于阴极通空气的情况,阴极通氧气时电池性能显著提高,故在条件允许的前提下应尽量以纯氧作为氧化气体.
参考文献
| [1] | 衣宝廉.燃料电池-原理技术应用[M].北京:化学工业出版社,2003 |
| [2] | Ticianelli E A;Derouin C R;Sromovasam S .Localization of Platinum in Low Catalyst Loading Electrodes to Attain High Power Densities in SPE Fuel Cells[J].Journal of Electroanalytical Chemistry,1988,251(02):275-295. |
| [3] | Qi Z;Kaufman A .Activation of Low Temperature PEM Fuel Cells[J].Journal of Power Sources,2002,111(01):181-184. |
| [4] | Menzer R;H(o)hlein B .Analysis of Energy and Water Management in Terms of Fuel-Cell Electricity Generation[J].Journal of Power Sources,1998,71(1-2):294-301. |
| [5] | 秦敬玉,毛宗强,徐景明,解正国.过量空气系数对燃料电池发动机输出特性的影响[J].汽车工程,2004(04):379-381,385. |
| [6] | 刘璿,郭航,马重芳.质子交换膜燃料电池低化学计量比的性能研究[J].工程热物理学报,2005(06):1025-1027. |
| [7] | Um S;Wang C Y .Three-Dimensional Analysis of Transport and Electrochemical Reactions in Polymer Electrolyte Fuel Cells[J].Journal of Power Sources,2004,125(01):40-51. |
| [8] | Picot D;Metkemeijer R;Bezian J J et al.Impact of the Water Symmetry Factor on Humidification and Cooling Strategies for PEM Fuel Cell Stacks[J].Journal of Power Sources,1998,75(02):251-260. |
| [9] | Bernardi D M .Water-Balance Calculations for Solid-Polymer-Electrolyte Fuel Cells[J].Journal of the Electrochemical Society,1990,137(11):3344-3350. |
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