Ji Mun Yoo

TL;DR: A synthesis of highly durable and active intermetallic ordered face-centered tetragonal (fct)-PtFe nanoparticles (NPs) coated with a "dual purpose" N-doped carbon shell to open a new simple and effective route for the commercialization of fuel cells.

TL;DR: Extended X-ray absorption fine structure analysis combined with electrochemical test shows that carbon shell coating prevents FeP nanoparticles from oxidation, making them highly stable under hydrogen evolution reaction operation conditions.

TL;DR: The optimized catalyst exhibits one of the best ORR performance in alkaline medium with excellent long-term stability in anion exchange membrane fuel cell and accelerated durability test and establishes a basis for rationale design of the porous carbon structure for electrocatalyst applications.

TL;DR: The activity and durability of nanoscale materials are summarized, focusing on the nanoparticle size effect, and two major degradation origins, including atomic dissolution and particle size increase, are discussed related to the activity decrease.

TL;DR: A novel synthetic strategy to directly produce highly dispersed MPt alloy nanoparticles (M = Fe, Co, or Ni) on various carbon supports with high catalyst loading is reported, featuring a unique bimetallic compound that evenly decomposes on carbon surface and forms uniformly sized intermetallic nanoparticles with a nitrogen-doped carbon protection layer.