Performance of DMFC with SS 316 bipolar/end plates
Performance of DMFC with SS 316 bipolar/end plates
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DOI：
10.1016/j.jpowsour.2005.02.089
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发表时间：
2006-01
影响因子：
9.2
通讯作者：
Biswajit Padhy;R. Reddy
中科院分区：
文献类型：
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作者：
Biswajit Padhy;R. Reddy
本论文主要研究直接甲醇燃料电池（DMFC）双极板/端板的新材料开发和设计。根据DOE要求，初步研究表明SS 316（不锈钢316）是合适的候选材料。研究了几种流场设计，并提出了一种改进的蛇形流场设计。在SS 316端板上制作了复杂的蛇形流场设计，研究了SS 316端板单电堆直接甲醇燃料电池在不同运行参数下的性能。在循环甲醇的情况下进行了100 h的长期试验，并对MEA中的污染物进行了表征。叠层效率为51%，并讨论了偏振损耗。具有低渗透性的SS 316导致穿过流场的压降增加，这提高了燃料电池性能。使用SS 316作为双极板材料将降低加工成本以及燃料电池堆的体积。
This work mainly emphasizes the development of new materials and design for a bipolar/end plate in a direct methanol fuel cell (DMFC). According to the DOE requirements, preliminary studies show that SS 316 (Stainless Steel 316) is a suitable candidate. Several flow field designs were studied and a modified serpentine design was proposed. SS 316 end plates were fabricated with an intricate modified serpentine flow field design on it. The performance of a single stack DMFC with SS 316 end plates were studied with different operational parameters. A long-term test was carried out for 100h with recycling the methanol and the contaminants in the MEA were characterized. The stack efficiency is found to be 51% and polarization losses are discussed. SS 316 with low permeability resulted in an increased pressure drop across the flow field, which increased the fuel cell performance. The use of SS 316 as bipolar plate material will reduce the machining cost as well as volume of the fuel cell stack.