Pt utilization in proton exchange membrane fuel cells: structure impacting factors and mechanistic insights

Abstract

This review analyzes the structural factors that impact Pt utilization in PEMFCs in great detail, emphasizing the mechanistic and molecule-level insights.

Pd/Ni-metal–organic framework-derived porous carbon nanosheets for efficient CO oxidation over a wide pH range

“…Alcohol-based (ethanol 1,2 , methanol 3,4 , glucose 5 ) fuel cells are green, sustainable, and effective energy sources; however, carbon monoxide (CO) poisoning [6][7][8] is among the most crucial factors precluding the large-scale applications of such devices. CO oxidation is of great importance in multi-disciplinary industrial and environmental applications.…”

Ternary PtZnCu Intermetallic Nanoparticles as an Efficient Oxygen Reduction Electrocatalyst for Fuel Cells with Ultralow Pt Loading

“…In addition, alloying Pt with transition metals has also been proven as an effective strategy to optimize the Pt electronic state and reduce Pt contents in the catalysts. For example, binary alloys PtNi, PtCo, and PtFe showed excellent performance for the oxygen reduction reaction (ORR) in liquid half-cells. − However, the superior performance of these Pt catalysts was often affected by other factors and could not be reproduced in practical PEMFCs. , …”

“…7−9 However, the superior performance of these Pt catalysts was often affected by other factors and could not be reproduced in practical PEMFCs. 8,9 In addition to the Pt catalysts as active sites, supports also play an essential role in improving catalytic activity and have attracted widespread attention. Carbon black, graphene, and other carbon materials have been extensively used as Pt-based catalyst supports because of their remarkable high specific surface area, electronic conductivity, and chemical stability.…”

Coating Porous TiO2 Films on Carbon Nanotubes to Enhance the Durability of Ultrafine PtCo/CNT Nanocatalysts for the Oxygen Reduction Reaction

“…Proton exchange membrane fuel cells (PEMFCs) are considered the core technology for hydrogen energy application systems owing to their highly efficient energy conversion and environmentally friendly emission characteristics. , The slow kinetic process of the oxygen reduction reaction (ORR) on the cathode side and the expensive price of platinum (Pt) severely hinder the wide application of PEMFCs. , Therefore, reducing the Pt loading, while maintaining the activity and stability, has been the focus of research in recent years …”