1. Cathode Design for Proton Exchange Membrane Fuel Cells in Automotive Applications
- Author
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Sheng Sui, Yichang Yan, Shangfeng Du, Ruiqing Wang, Tai Sun, and Haojie Wang
- Subjects
Materials science ,Proton exchange membrane fuel cell ,Nanotechnology ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Catalyst poisoning ,Durability ,Cathode ,0104 chemical sciences ,Catalysis ,law.invention ,Knudsen diffusion ,Stack (abstract data type) ,law ,Automotive Engineering ,0210 nano-technology ,Power density - Abstract
An advanced cathode design can improve the power performance and durability of proton exchange membrane fuel cells (PEMFCs), thus reducing the stack cost of fuel cell vehicles (FCVs). Recent studies on highly active Pt alloy catalysts, short-side-chain polyfluorinated sulfonic acid (PFSA) ionomer and 3D-ordered electrodes have imparted PEMFCs with boosted power density. To achieve the compacted stack target of 6 kW/L or above for the wide commercialization of FCVs, developing available cathodes for high-power-density operation is critical for the PEMFC. However, current developments still remain extremely challenging with respect to highly active and stable catalysts in practical operation, controlled distribution of ionomer on the catalyst surface for reducing catalyst poisoning and oxygen penetration losses and 3D (three-dimensional)-ordered catalyst layers with low Knudsen diffusion losses of oxygen molecular. This review paper focuses on impacts of the cathode development on automotive fuel cell systems and concludes design directions to provide the greatest benefit.
- Published
- 2021
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