质子交换膜燃料电池双极板研究进展

Research progress of bipolar plate for proton exchange membrane fuel cells

双极板是质子交换膜燃料电池的关键部件之一,在燃料电池中主要起分隔氧化剂与还原剂、使生成的水顺利排出、分隔电池堆中的每个电池和收集输送电流的作用。质子交换膜燃料电池双极板的成本与性能对推进燃料电池的产业化进程有很大影响。双极板材料主要有无孔石墨材料、金属或合金材料以及各种复合材料,针对这些双极板材料的优缺点进行了比较。流场设计目前采用较多的是蛇形流场,其它的还有网格状流场、叉指形和肺形等。

Bipolar plate is a vital component of PEM fuel cells, which supplies fuel and oxidant to reactive sites, removes reaction products, provides mechanical support for the cells in the stack collects and produced current. The cost and performance of the bipolar plate influence the industrialization of PEMFC. The materials of bipolar plate for proton- exchange membrane fuel cell are focused on graphite, metal or alloy and all kinds of composite material. Their relative merits are compared . The design of flow-field is also discussed. Among them serpentine-type flow-field plates are mentioned in detail.