A5059563152- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Advanced Photocatalysis Techniques
- Quantum Chromodynamics and Particle Interactions
- Polyoxometalates: Synthesis and Applications
- Layered Double Hydroxides Synthesis and Applications
- Electrochemical Analysis and Applications
- Catalytic Processes in Materials Science
- Nanomaterials for catalytic reactions
- Advanced Memory and Neural Computing
- Catalysis and Hydrodesulfurization Studies
- Advancements in Solid Oxide Fuel Cells
- Conducting polymers and applications
- Ionic liquids properties and applications
- Quantum Dots Synthesis And Properties
- CO2 Reduction Techniques and Catalysts
- Copper-based nanomaterials and applications
- Supercapacitor Materials and Fabrication
- Chalcogenide Semiconductor Thin Films
- Mesoporous Materials and Catalysis
- Advanced Battery Materials and Technologies
- Metal complexes synthesis and properties
Incheon National University
2022-2025
Chungbuk National University
2023-2025
Seoul National University of Science and Technology
2022-2024
Korea University
2016-2022
Korea Institute of Science and Technology
2021-2022
Seoul Institute
2018-2021
Government of the Republic of Korea
2018-2021
Fuel Cells and Hydrogen
2021
Institute for Basic Science
2017-2018
Institute of Spectroscopy
2018
Nanoframe electrocatalysts have attracted great interest due to their inherently high active surface area per a given mass. Although recent progress has enabled the preparation of single nanoframe structures with variety morphologies, more complex such as double-layered not yet been realized. Herein, we report rational synthetic strategy for structurally robust Ir-based multimetallic (DNF) structure, nanoframe@nanoframe. By leveraging differing kinetics dual Ir precursors and transition...
Development of oxygen evolution reaction (OER) catalysts with reduced precious metal content while enhancing catalytic performance has been pivotal importance in cost‐effective design acid polymer electrolyte membrane water electrolyzers. Hollow multimetallic nanostructures well‐defined facets are ideally suited for saving the usage expensive metals as well boosting performances; however, Ir‐based hollow nanocatalysts have rarely reported. Here, a very simple synthetic scheme is reported...
Abstract Noble metal binary alloy nanoframes have emerged as a new class of fuel cell electrocatalysts because their intrinsic high catalytic surface area and accompanied activity. However, inferior structural compositional stability during catalysis pose formidable huddles to practical applications. Herein, it is reported that introduction an additional component the system may serve simple effective means enhancing nanoframe‐based electrocatalysts. It demonstrated in situ doping Co PtCu...
Critical assessment of the present status HEA NPs as catalysts, including an in-depth discussion computational studies, combinatorial screening, or machine-learning studies to find optimum composition and structure electrocatalysts.
This article reviews recent advances in the synthetic strategies for metal/metal compound hetero-interfaces within a nanostructure and their beneficial synergistic effect on electrocatalytic performance toward energy conversion applications such as HER, OER ORR.
Pt impregnated into the RuO 2 phase assisted by oxophilic Co suppresses over-oxidation of Ru during water electrooxidation under acidic conditions.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPillaring of layered double hydroxides (LDH's) by polyoxometalate anionsTaehyun. Kwon, George A. Tsigdinos, and Thomas J. PinnavaiaCite this: Am. Chem. Soc. 1988, 110, 11, 3653–3654Publication Date (Print):May 1, 1988Publication History Published online1 May 2002Published inissue 1 1988https://pubs.acs.org/doi/10.1021/ja00219a048https://doi.org/10.1021/ja00219a048research-articleACS PublicationsRequest reuse permissionsArticle...
Nanoframe alloy structures represent a class of high-performance catalysts for the oxygen reduction reaction (ORR), owing to their high active surface area, efficient molecular accessibility, and nanoconfinement effect. However, structural chemical instabilities nanoframes remain an important challenge. Here, we report synthesis PtCu constructed with atomically ordered intermetallic structure (O-PtCuNF/C) showing ORR activity, durability, stability. We rationally designed O-PtCuNF/C catalyst...
The electrochemical upcycling of plastic waste offers a more efficient and safer means to produce value-added products under mild conditions.
Developing a non-noble metal-based bifunctional electrocatalyst with high efficiency and stability for overall water splitting is desirable renewable energy systems. We developed novel method to fabricate heterostructured electrocatalyst, comprising NiCoP nanoneedle array grown on Ti3C2Tx MXene-coated Ni foam (NCP-MX/NF) using dip-coating hydrothermal method, followed by phosphorization. Due the abundance of active sites, enhanced electronic kinetics, sufficient electrolyte accessibility...
Abstract The success of proton exchange membrane water electrolysis (PEMWE) depends on active and robust electrocatalysts to facilitate oxygen evolution reaction (OER). Heteroatom-doped-RuO x has emerged as a promising because heteroatoms suppress lattice participation in the OER, thereby preventing destabilization surface Ru catalyst degradation. However, identifying suitable achieving their atomic-scale coupling with atoms are nontrivial tasks. Herein, steer pathway away from involvement...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPillaring of a layered double hydroxide by polyoxometalates with Keggin-ion structuresTaehyun Kwon and Thomas J. PinnavaiaCite this: Chem. Mater. 1989, 1, 4, 381–383Publication Date (Print):July 1989Publication History Published online1 May 2002Published inissue 1 July 1989https://pubs.acs.org/doi/10.1021/cm00004a001https://doi.org/10.1021/cm00004a001research-articleACS PublicationsRequest reuse permissionsArticle...
Abstract Dissolution of Ir oxides in Ir‐based catalysts, which is closely linked to the catalyst activity and stability toward oxygen evolution reaction (OER) acidic media, a critical unresolved problem commercialization water electrolysis. Doping foreign elements into can accomplish an optimal combination oxidation states that conducive leaching‐resistance active catalytic sites. Here, it reported Pt doping IrO x ‐based nanoframe beneficial both terms stability. The Pt‐doped achieves mass...
Designing an efficient and durable electrocatalyst for the sluggish oxygen evolution reaction (OER) at anode remains foremost challenge in developing proton exchange membrane (PEM) electrolyzers. Here, a highly active cactus-like nanoparticle with exposed heterointerface between IrO2 low oxidation state Ru by introducing trace amount of Mn dopant is reported. The heterostructure fabrication relies on initial mixing Ir phases before electrochemical to produce conjoined Ru/IrO2...
Abstract Commercialization of energy conversion technologies, such as water electrolysis or fuel cells, has become a common prioritized goal in academia and industry due to the accelerated environmental crisis caused by rapid increase demand for fossil fuel‐based resources. However, these state‐of‐the‐art technologies require use expensive noble metal‐based electrocatalysts, which significantly undermine feasibility their commercial success. The introduction less elements into namely,...
Abstract The development of highly active electrocatalysts is crucial for the advancement renewable energy conversion devices. design core–shell nanoparticle catalysts represents a promising approach to boost catalytic activity as well save use expensive precious metals. Here, simple, one‐step synthetic route reported prepare hexagonal nanosandwich‐shaped Ni@Ru nanoparticles (Ni@Ru HNS), in which Ru shell layers are overgrown regioselective manner on top and bottom, around center section Ni...
Efficient charge transfer from<italic>in situ</italic>formed PtO<sub>x</sub>to catalytically active RuO<sub>2</sub>in hetero-interfaced Au@Pt/RuO<sub>2</sub>nanowires effectively prevents the overoxidation of RuO<sub>2</sub>to soluble species during OER, leading to durable OER catalysis.
Abstract Developing efficient, economical, and stable catalysts for the oxygen evolution reaction is pivotal producing large‐scale green hydrogen in future. Herein, a vanadium‐doped nickel‐iron oxide supported on nickel foam (V‐NiFe 2 O 4 /NF) introduced, synthesized via facile hydrothermal method as highly efficient electrocatalyst water electrolysis. X‐ray photoelectron absorption spectroscopies reveal synergistic interaction between vanadium dopant nickel/iron host material, which tunes...
Hydrogen Evolution Reaction In article number 2305035, Jin Young Kim, Mu-Hyun Baik, Kwangyeol Lee, and co-workers present a CrOx-doped Co9S8/CuCrS2 mosaic hetero-nanocatalyst for hydrogen evolution reaction in neutral conditions. The CrOx dopants enhance water adsorption/dissociation facilitate electron transfer to Co sites, optimizing generation. innovative design integrates oxophilic HER-active domains, demonstrating exceptional performance stability, paving the way advanced catalysts...