Sung Jong Yoo
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View article: Oxide-hybridized carbon as a catalyst support for efficient anion exchange membrane water electrolysis
Oxide-hybridized carbon as a catalyst support for efficient anion exchange membrane water electrolysis Open
The performance of anion exchange membrane water electrolysis, a key technology for achieving net-zero carbon emissions, can be improved by introducing an appropriate catalyst support. However, the ideal support material for water electrol…
View article: Development of Efficient Catalyst Layers for Proton Exchange Membrane Water Electrolysis: The Role of Catalyst Supports
Development of Efficient Catalyst Layers for Proton Exchange Membrane Water Electrolysis: The Role of Catalyst Supports Open
Proton exchange membrane water electrolysis (PEMWE) is a promising technology for green hydrogen production, but requires a high iridium (Ir) loading of ≈2.0 mg cm −2 in the anode catalyst layer (CL), which increases capital costs and hind…
View article: Long‐Term, Stable Alkaline Electrolysis with a Durable Crystalline Polybenzimidazole Membrane
Long‐Term, Stable Alkaline Electrolysis with a Durable Crystalline Polybenzimidazole Membrane Open
To overcome the shortcomings of conventional alkaline electrolyzers, polybenzimidazole (PBI) is used to develop novel alkaline electrolysis membranes. In this study, highly crystalline poly(2,2‐ p ‐phenylene‐5,5‐bibenzimidazole) ( p ‐PBI) …
View article: Enhancing Metal‐Support Interactions of Ru Catalysts via Relaxation of Oxygen Vacancies for Hydrogen Production
Enhancing Metal‐Support Interactions of Ru Catalysts via Relaxation of Oxygen Vacancies for Hydrogen Production Open
The stability of Ru‐based catalysts under harsh electrochemical conditions is a critical challenge limiting their practical application in energy conversion systems. In this study, Ru catalysts supported on ZrO 2‐x , CeO 2‐x , and ZrCeO 2‐…
View article: Phosphorus‐Doped Highly Crystalline Carbon for High Platinum Stability and Robust Support in Proton‐Exchange Membrane Fuel Cells
Phosphorus‐Doped Highly Crystalline Carbon for High Platinum Stability and Robust Support in Proton‐Exchange Membrane Fuel Cells Open
Proton‐exchange membrane fuel cells (PEMFCs) require durable and efficient catalyst supports to overcome the limitations of Pt‐based catalysts and conventional low‐crystalline carbon (LCC) supports, such as high cost, susceptibility to cor…
View article: Simultaneous immobilization of physically vaporized platinum alloy atoms for oxygen reduction electrocatalysis
Simultaneous immobilization of physically vaporized platinum alloy atoms for oxygen reduction electrocatalysis Open
In this work, we employ physical vapor deposition (PVD) to synthesize PtCu nanoparticles on carbon supports (PtCu/C) with varied Cu contents, followed by acid‐leaching to induce porosity and optimize catalyst structure. Characterization by…
View article: Electrode Structuring via Carbon Nanotubes and Nafion Ionomer–Coated TiO <sub>2</sub> Enhances the Durability of Proton Exchange Membrane Fuel Cells Under Carbon Corrosion Conditions
Electrode Structuring via Carbon Nanotubes and Nafion Ionomer–Coated TiO <sub>2</sub> Enhances the Durability of Proton Exchange Membrane Fuel Cells Under Carbon Corrosion Conditions Open
The widespread implementation of proton exchange membrane fuel cells (PEMFCs) is being delayed by their inadequate durability, particularly that of the cathode. To address this problem, two corrosion‐resistant additives are introduced to m…
View article: Se‐Assisted Modulation of Electronic Structure of Ruthenium Phosphide Nanotubes for Efficient Alkaline Hydrogen Evolution Reaction
Se‐Assisted Modulation of Electronic Structure of Ruthenium Phosphide Nanotubes for Efficient Alkaline Hydrogen Evolution Reaction Open
Anion‐exchange membrane water electrolysis (AEMWE) holds immense promise for hydrogen (H 2 ) production yet faces challenges due to the sluggish kinetics of the hydrogen evolution reaction (HER). Highly efficient and durable catalysts for …
View article: Enhancing Metal–Support Interactions of Ru Catalysts via Relaxation of Oxygen Vacancies for Hydrogen Production
Enhancing Metal–Support Interactions of Ru Catalysts via Relaxation of Oxygen Vacancies for Hydrogen Production Open
The stability of Ru-based catalysts under harsh electrochemical conditions is a critical challenge limiting their practical application in energy conversion systems. In this study, Ru catalysts supported on ZrO2-x, CeO2-x, and ZrCeO2-x wer…
View article: Atomic-level Ru-Ir mixing in rutile-type (RuIr)O2 for efficient and durable oxygen evolution catalysis
Atomic-level Ru-Ir mixing in rutile-type (RuIr)O2 for efficient and durable oxygen evolution catalysis Open
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 electrocatalysts because hete…
View article: A MoO <sub> <i>x</i> </sub> -incorporated RuAu composite electrocatalyst for the hydrogen evolution reaction in proton exchange membrane water electrolysis
A MoO <sub> <i>x</i> </sub> -incorporated RuAu composite electrocatalyst for the hydrogen evolution reaction in proton exchange membrane water electrolysis Open
The electrocatalytic activity of RuAu for the hydrogen evolution reaction is improved by the formation of a composite with MoO x through electrodeposition.
View article: A ruthenium–titania core–shell nanocluster catalyst for efficient and durable alkaline hydrogen evolution
A ruthenium–titania core–shell nanocluster catalyst for efficient and durable alkaline hydrogen evolution Open
Research strategy and synthesis of a core–shell Ru catalyst.
View article: Effects of precoating color formulation with coarse ground calcium carbonate and porous precipitated calcium carbonate on paperboard properties and printability
Effects of precoating color formulation with coarse ground calcium carbonate and porous precipitated calcium carbonate on paperboard properties and printability Open
To identify suitable pigments for the precoating of paperboard, the rheological properties of coating colors and their effects on the surface and printing properties of coated paperboard were evaluated with respect to the type and combinat…
View article: Instantaneous Thermal Energy for Swift Synthesis of Single‐Atom Catalysts for Unparalleled Performance in Metal–Air Batteries and Fuel Cells (Adv. Mater. 32/2024)
Instantaneous Thermal Energy for Swift Synthesis of Single‐Atom Catalysts for Unparalleled Performance in Metal–Air Batteries and Fuel Cells (Adv. Mater. 32/2024) Open
Single-Atom Catalysts This image depicts the key step in the synthesis process of our innovative FeN4-O-graphene catalyst for the electrochemical oxygen reduction reaction. During the thermal decomposition of DMF, CO is formed and combines…
View article: Ru<sub>2</sub>P/Ir<sub>2</sub>P Heterostructure Promotes Hydrogen Spillover for Efficient Alkaline Hydrogen Evolution Reaction (Adv. Energy Mater. 29/2024)
Ru<sub>2</sub>P/Ir<sub>2</sub>P Heterostructure Promotes Hydrogen Spillover for Efficient Alkaline Hydrogen Evolution Reaction (Adv. Energy Mater. 29/2024) Open
Hydrogen Evolution Reaction In article number 2401426, Sung Jong Yoo, Sang Uck Lee, Kwangyeol Lee, and co-workers utilized density functional theory calculations to identify promising combinations of Ir2P and Ru2P materials that facilitate…
View article: Instantaneous Thermal Energy for Swift Synthesis of Single‐Atom Catalysts for Unparalleled Performance in Metal–Air Batteries and Fuel Cells
Instantaneous Thermal Energy for Swift Synthesis of Single‐Atom Catalysts for Unparalleled Performance in Metal–Air Batteries and Fuel Cells Open
Based on experimental and computational evidence, phthalocyanine (Pc) compounds in the form of quaternary‐bound metal‐nitrogen (N) atoms are the most effective catalysts for oxygen reduction reaction (ORR). However, the heat treatment proc…
View article: High Free Volume Polyelectrolytes for Anion Exchange Membrane Water Electrolyzers with a Current Density of 13.39 A cm<sup>−2</sup> and a Durability of 1000 h (Adv. Sci. 5/2024)
High Free Volume Polyelectrolytes for Anion Exchange Membrane Water Electrolyzers with a Current Density of 13.39 A cm<sup>−2</sup> and a Durability of 1000 h (Adv. Sci. 5/2024) Open
High Free Volume Polyelectrolyte In article number 2306988, Hyun Woo Kang, Chi Hoon Park, Young Moo Lee, and co‐workers report a series of anion exchange polyelectrolytes (AEPs) with high free volume. The highly‐rigid‐twisted spirobisindan…
View article: A Review of Strategies to Improve the Stability of Carbon-supported PtNi Octahedral for Cathode Electrocatalysts in Polymer Electrolyte Membrane Fuel Cells
A Review of Strategies to Improve the Stability of Carbon-supported PtNi Octahedral for Cathode Electrocatalysts in Polymer Electrolyte Membrane Fuel Cells Open
Polymer electrolyte membrane fuel cells (PEMFCs) are green energy conversion devices, for which commercial markets have been established, owing to their application in fuel cell vehicles (FCVs). Development of cathode electrocatalysts, rep…
View article: Elucidating Template‐To‐Precursor Interactions for Synthesizing Highly Active Single Atomic Fe─N─C Electrocatalysts for the Oxygen Reduction Reaction
Elucidating Template‐To‐Precursor Interactions for Synthesizing Highly Active Single Atomic Fe─N─C Electrocatalysts for the Oxygen Reduction Reaction Open
Iron‐ and nitrogen‐doped carbon (Fe─N─C) catalysts have garnered attention owing to their high oxygen reduction reaction (ORR) activity, which is comparable to that of Pt/C catalysts. Among the various methods for designing Fe─N─C catalyst…
View article: Triptycene Branched Poly(aryl‐co‐aryl piperidinium) Electrolytes for Alkaline Anion Exchange Membrane Fuel Cells and Water Electrolyzers
Triptycene Branched Poly(aryl‐co‐aryl piperidinium) Electrolytes for Alkaline Anion Exchange Membrane Fuel Cells and Water Electrolyzers Open
Alkaline polymer electrolytes (APEs) are essential materials for alkaline energy conversion devices such as anion exchange membrane fuel cells (AEMFCs) and water electrolyzers (AEMWEs). Here, we report a series of branched poly(aryl‐co‐ary…
View article: High Free Volume Polyelectrolytes for Anion Exchange Membrane Water Electrolyzers with a Current Density of 13.39 A cm<sup>−2</sup> and a Durability of 1000 h
High Free Volume Polyelectrolytes for Anion Exchange Membrane Water Electrolyzers with a Current Density of 13.39 A cm<sup>−2</sup> and a Durability of 1000 h Open
The rational design of the current anion exchange polyelectrolytes (AEPs) is challenging to meet the requirements of both high performance and durability in anion exchange membrane water electrolyzers (AEMWEs). Herein, highly‐rigid‐twisted…