关键词: 质子交换膜燃料电池, 膜电极, 有序结构催化层

Abstract:

Performances of proton exchange membrane fuel cells (PEMFCs) have been recently improved. However, the cost and Pt loading must be further reduced for the commercialization of PEMFCs. Previous researches have proved that the order-structured electrode is beneficial to the effective utilization of Pt-based catalysts, decreasing the Pt loading and increasing the three-phase boundary for reaction. Especially, the nanostructure thin films (NSTFs) electrode, an ultra-thin catalytic layer developed by 3M Company, demonstrates high performance and durability. Besides, some other researchers have employed the high conductive carbon nanotube arrays or high stable metal oxide arrays as the order-structured catalyst supports for fundamental researches (such as, improving the Pt-specific activity, decreasing the catalysts loading or studying the essential relationships between electrode performance and structure). However, further improvement in the present advanced catalytic layer is required. This article reviews the recent developments of the order-structured catalytic layer.

Key words: proton exchange membrane fuel cells, membrane electrode assembly, order-structured catalytic layer