A5101735479- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Catalytic Processes in Materials Science
- Advanced battery technologies research
- Catalysis and Hydrodesulfurization Studies
- Supercapacitor Materials and Fabrication
- Advanced Battery Materials and Technologies
- Mesoporous Materials and Catalysis
- Electrochemical Analysis and Applications
- Catalysts for Methane Reforming
- Advancements in Battery Materials
- Conducting polymers and applications
- Catalysis and Oxidation Reactions
- Nanomaterials for catalytic reactions
- Advanced Photocatalysis Techniques
- Advanced Memory and Neural Computing
- Nanoporous metals and alloys
- Ammonia Synthesis and Nitrogen Reduction
- Hydrogen Storage and Materials
- Advanced Battery Technologies Research
- Environmental remediation with nanomaterials
- Semiconductor materials and devices
- Machine Learning in Materials Science
- Aerogels and thermal insulation
- Thermal Expansion and Ionic Conductivity
Jeonbuk National University
2014-2024
Government of the Republic of Korea
2015
Chonbuk National University Hospital
2008-2010
Seoul National University
2003-2009
The design of electrocatalysts for polymer electrolyte membrane fuel cells must satsify two equally important fundamental principles: optimization electrocatalytic activity and long-term stability in acid media (pH <1) at high potential (0.8 V). We report here a solution-based approach to the preparation Pt-based alloy with early transition metals realistic parameters Pt3M (M = Y, Zr, Ti, Ni, Co) nanocatalysts oxygen reduction reaction (ORR). enhanced ORR relationship between electronic...
Based on experimental and computational evidence, phthalocyanine (Pc) compounds in the form of quaternary-bound metal-nitrogen (N) atoms are most effective catalysts for oxygen reduction reaction (ORR). However, heat treatment process used their synthesis may compromise ideal structure, causing agglomeration transition metals. To overcome this issue, a novel method is developed synthesizing iron (Fe) single-atom with structures supported by thermally exfoliated graphene oxide (GO). This...
To design Pt-based materials with a hollow structure via galvanic reaction would be one of the effective ways to prepare electro- catalysts high activity. The between Pt ions and metal template is usually conducted under limited conditions, which makes preparation nanoparticles laborious. Here, we introduce one-step one-pot synthetic approach for carbon-supported PtNi alloy narrow size distribution. Prepared alloys were characterized by nonporous shell consisting Pt-enriched surface layer an...
The perovskite LSC exhibited better catalytic performance than conventionally used KB and improved the reversibility of O<sub>2</sub> electrode.
Biomass is the ideal precursor for fabricating oxygen reduction reaction (ORR) electrocatalysts due to its large-scale and low-cost production, as well renewability. Among various forms of biomass, especially waste pig blood a sustainable synthesis functional electrocatalysts. However, proteins or metal substances present in act impurities impede electrocatalytic performance, preventing direct use an electrocatalyst. Herein, we report successful hierarchical 2D porous Fe single-atom...
A close encounter with reality on core–shell catalysts for fuel cells: the outstanding significance of work is (i) suggestion a computational methodology to design specific combination core and shell materials in terms both activity durability, (ii) development novel facile synthesis core–shell/C electrocatalysts, (iii) experimental validation their performance as well long-term stability.
Despite considerable development in the field of single-atom catalysts (SACs) on carbon-based materials, reported strategies for synthesizing SACs generally rely top-down approaches, which hinder achieving both simple and universal synthesis routes that are simultaneously applicable to various metals nanocarbons. Here, a strategy fabricating nanocarbon based-SACs using flash bottom-up arc discharge method mitigate these issues is reported. The ionization elements their recombination process...
Galvanic displacement reaction has been considered a simple method for fabricating hollow nanoparticles. However, the formation of interiors in nanoparticles is not easily achieved owing to easy oxidization transition metals, which results mixed morphologies, and presence surfactants on nanoparticle surface, severely deteriorates catalytic activity. In this study, we developed facile gram-scale methodology one-pot preparation carbon-supported PtNi as an efficient durable oxygen reduction...