Yonsei University · Engineering
Professor Yukwon Jeon's research lab specializes in the design and development of advanced functional materials for sustainable energy and environmental applications. Key research directions include the fabrication of high-performance catalysts and membranes for fuel cells and hydrogen production, with a focus on improving efficiency, durability, and cost-effectiveness. The lab also explores innovative nanomaterials—such as perovskite-based hollow fibers, zeolitic imidazolate frameworks, and hydrotalcite nanohybrids—for clean energy conversion, catalytic reforming of heavy hydrocarbons, and biomedical applications. A strong emphasis is placed on structural engineering at the micro- and nano-scale to optimize material performance in real-world conditions.
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Polymer electrolyte membrane fuel cell is a promising zero-emission power generator for stationary/automotive applications. However, key issues, such as performance and costs, are still remained for an economical commercialization. Here, we fabricated a high-performance membrane electrode assembly (MEA) using an interfacial design based on well-arrayed micro-patterned membranes including circles, squares and hexagons with different sizes, which are produced by a facile elastomeric mold method. T
This review summarizes Cu-based catalysts for sustainable hydro-deoxygenation of glycerol to 1,2-propanediol with and without external hydrogen including various mechanistic pathways for the reactions involved.
Design of catalytic materials has been highlighted to build ultraclean use of heavy oil including liquid-to-gas technology to directly convert heavy hydrocarbons into H2-rich gas fuels. If the H2 is produced from such heavy oil through high-active and durable catalysts in reforming process that is being constructed in hydrogen infrastructure, it will be addressed into renewable energy systems. Herein, the three different hollow fiber catalysts networked with perovskite nanoparticles, LaCr(0.8)Ru
A microstructural design through unique corn-cob like ceramic nanofibers and investigation of the catalytic mechanisms depending on their material positions.
Biocompatible hydrotalcite nanohybrids, i.e., layered double hydroxide (LDH) based nanohybrids have attracted significant attention for biomedical functions. Benefiting from good biocompatibility, tailored drug incorporation, high drug loading capacity, targeted cellular delivery and natural pH-responsive biodegradability, hydrotalcite nanohybrids have shown great potential in drug/gene delivery, cancer therapy and bio-imaging. This review aims to summarize recent progress of hydrotalcite nanohy
Heteropoly acids (HPAs) have been used in perfluorinated sulfonic acid polymers such as Nafion or Aquivion to form organic/inorganic composite membranes with improved proton conductivity and water management ability. However, the HPA has a low BET surface area with water-soluble characteristics, which prevents enhancement in the number of proton-transferable sites and accelerates HPA leaching while operating the proton exchange membrane fuel cells (PEMFCs). The HPA was functionalized on zeolite
To achieve a sustainable society, CO<sub>2</sub> emissions must be reduced and efficiency of energy systems must be enhanced. The polymer electrolyte membrane fuel cell (PEMFC) has zero CO<sub>2</sub> emissions and high effectiveness for various applications. A well-designed membrane electrolyte assembly (MEA) composed of electrode layers of effective materials and structure can alter the performance and durability of PEMFC. We demonstrate an efficient electrode deposition method through a well-
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