RESEARCH

Center for Nanotectonics

Electrocatalysis

Electrocatalysis
1
Electrocatalysis




Nanoparticles and nanocrystals have been utilized as catalysts for numerous electrocatalytic reactions. However, simply decreasing the particle’s size to nanoscale does not necessarily guarantee high catalytic activities. By enabling precise control of composition, morphology, and the surface electronic structure of nanocatalysts, electrocatalysis of chemical reactions can achieve an unprecedented breakthrough. Furthermore, discovering and realizing a unique nanostructure that is most efficient for the target reaction is another way of enlightening science behind each reaction and improving catalytic activities. Our group is currently under investigation of synthesizing optimal nanocatalysts for various chemical reactions used for the environment-friendly energy generation.

References

  • [1] Hong, J. W.; Kim, Y.; Wi, D. H.; Lee, S.; Lee, S.-U.; Lee, Y. W.; Choi, S.-I.; Han, S. W. Ultrathin Free-Standing Ternary-Alloy Nanosheets. Angew. Chem. Int. Ed. 2016, 55, 2753–2758.
  • [2] Kwon, Y.; Kim, Y.; Hong, J. W.; Whang, Y.; Kim, S.; Wi, D. H.; Byon, H. R.; Han, S. W. One-pot production of ceria nanosheets-supported PtNi alloy nanodendrites with high catalytic performance toward methanol oxidation and oxygen reduction. J. Mater. Chem. A 2020, 8, 25842-25849.
  • [3] Kim, Y.; Lee, Y. W.; Lee, S.; Gong, J.; Lee, H.-S.; Han, S. W. One-Pot Synthesis of Ternary Alloy Hollow Nanostructures with Controlled Morphologies for Electrocatalysis. ACS Appl. Mater. Interfaces 2021, 13, 45538-45546.
  • [4] Ahn, H.; Ahn, H.; An, J.; Kim, H.; Hong, J. W.; Han, S. W. Role of Surface Strain at Nanocrystalline Pt{110} Facets in Oxygen Reduction Catalysis. Nano Lett. 2022, 22, 9115-9121.