Seoul National University · Engineering
Professor Oh Joong Kwon's research lab specializes in the development of advanced electrocatalysts and functional nanomaterials for sustainable energy applications, with a strong focus on proton exchange membrane water electrolysis (PEMWE) and oxygen reduction reactions (ORR). The lab pioneers the design of non-noble metal-based catalysts, particularly nitrogen- and heteroatom-doped carbon-encapsulated transition metal nanoparticles, using scalable and environmentally friendly synthesis methods. Their work emphasizes enhancing catalytic activity, durability, and mass transport properties through tailored carbon matrix structures and microstructural engineering of porous transport layers (PTLs). The research also extends to understanding genetic factors in complex diseases, as demonstrated by their work on HLA class II alleles in multiple sclerosis among diverse populations.
Figures are computed from collected data and may differ slightly.
This study, unlike previous ones, is the first to show a significant association between HLA class II alleles and MS in the Jewish population. The association with the HLA-DR2-related haplotype is similar to that among non-Jewish white patients with MS. Moreover, our data support the possibility that DRB1*1501 is the susceptibility allele responsible for the association between this haplotype and MS in the Jewish population. Our study also underscores differences in HLA profiles between Ashkenaz
Nitrogen-doped carbon-encapsulated non-noble metals are promising electrocatalytic alternatives to Pt for the oxygen reduction reaction (ORR). Herein, we describe the efficient synthesis of nitrogen- and fluorine-doped carbon-encapsulated Fe/Fe<sub>3</sub>C (NFC@Fe/Fe<sub>3</sub>C) crystals from a Fe-poly(aniline-fluoro-aniline) co-polymer and demonstrate their use as efficient ORR electrocatalysts in acidic and alkaline environments. X-ray diffraction patterns, scanning electron microscopy, tra
A novel investigation was performed on fluorine-rich carbon shell formation on metal (Fe/Co/FeCo) surfaces and their contribution to capacitance enhancement was evaluated.
Abstract More active electrocatalysts for H 2 and O 2 evolution reactions, efficient membranes, and robust porous transport layers (PTL) are required for designing advanced proton exchange membrane water electrolysis (PEMWE) systems. An N‐doped carbon matrix is introduced in this study to surpass the existing Ti PTLs. One‐step pyrolysis results in the carbonization of polyaniline films to the N‐doped carbon matrix, simultaneous formation of desiccation cracks and Ir x Ru y nanoparticles, and par
Summary Investigation of the anode porous transport layer (PTL) is crucial for the commercialization of anion‐exchange membrane water electrolysis (AEMWE). Recently, nickel foam (Ni‐foam) has been employed as an alternative to the conventional titanium‐based PTL (Ti‐felt) and strategies to improve its performance and durability have been developed. However, few studies have investigated the effect of pore structures in Ni‐foam and the applications of other Ni‐based PTLs have not been reported. I
The development of a low cost and highly active alternative to the commercial Pt/C catalysts used in the oxygen reduction reaction (ORR) requires a facile and environmentally-friendly synthesis process to facilitate large-scale production and provide an effective replacement. Transition metals, in conjunction with nitrogen-doped carbon, are among the most promising substitute catalysts because of their high activity, inexpensive composition, and high carbon monoxide tolerance. We prepared a poly
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