Optimizing the Mass Transport and Atomic Fe Intrinsic Activity to Achieve High-Performing Fuel Cells

Due to the insufficient three-phase interfaces and high oxygen transport resistance, the high intrinsic activity cannot be sufficiently utilized in practical proton-exchange membrane fuel cells (PEMFCs). The efficient transport of protons and reactants within the catalyst layers (CL) is largely influenced by the pore structure of the carbon support, hosting both metal sites and ionomers. Herein, we constructed a porous nanosheet Pt-free catalyst (FeAC-N-SC) by selecting a highly nitrogen-rich GT-18 MOF via salt template to realize the improvement of PEMFC performance. The simulation and experimental results illustrate that the microstructure can benefit the homogeneous dispersion of ionomers and facilitate…

• NN
  National Natural Science Foundation of China

  Awards: 22075018, 21922502, 21971017, 22375017
• CN
  China National Petroleum Corporation

  Award: 2022DQ02-0606
• BA
  Beijing Association for Science and Technology

  Award: BYESS2023163
• NK
  National Key Research and Development Program of China

  Award: 2020YFB1506300