Highly Dispersed Alloy Catalyst for Durability

Vivek S. Murthi (Primary Contact), Elise Izzo, Wu Bi, Sandra Guerrero and Lesia Protsailo

UTC Power Corporation, South Windsor, CT

关键词: 30 Direct Energy Conversion;    Pem Fuel Cells;    Durability;    08 Hydrogen;    77 Nanoscience And Nanotechnology Pem Fuel Cells;   

DOI  :  10.2172/1059393
RP-ID  :  DOEGO17019
RP-ID  :  FG36-07GO17019
RP-ID  :  1059393

美国|英语

来源: UNT Digital Library

【 摘 要 】

Achieving DOE’s stated 5000-hr durability goal for light-duty vehicles by 2015 will require MEAs with characteristics that are beyond the current state of the art. Significant effort was placed on developing advanced durable cathode catalysts to arrive at the best possible electrode for high performance and durability, as well as developing manufacturing processes that yield significant cost benefit. Accordingly, the overall goal of this project was to develop and construct advanced MEAs that will improve performance and durability while reducing the cost of PEMFC stacks. The project, led by UTC Power, focused on developing new catalysts/supports and integrating them with existing materials (membranes and gas diffusion layers (GDLs)) using state-of-the-art fabrication methods capable of meeting the durability requirements essential for automotive applications. Specifically, the project work aimed to lower platinum group metals (PGM) loading while increasing performance and durability. Appropriate catalysts and MEA configuration were down-selected that protects the membrane, and the layers were tailored to optimize the movements of reactants and product water through the cell to maximize performance while maintaining durability.