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Facile Electrode Manufacturing Strategy for Ultra-Low Cobalt Consumption in Oxygen Evolution Reaction
Hee Yoon Roh, Ki-Yong Yoon, Jaehoon Jeong, Kyung-Bok Lee, Dohyung Kim, Yangdo Kim, Juchan Yang
Korean J. Met. Mater. 2025;63(2):168-176.   Published online 2025 Feb 5
DOI: https://doi.org/10.3365/KJMM.2025.63.2.168

Abstract
Water splitting is a sustainable method of hydrogen production that is crucial for achieving carbon neutrality. However, the high cost of green hydrogen remains a major challenge. One strategy to reduce costs is the use of non-precious metal catalysts, such as Co, which is known for its excellent catalytic properties...... More

    
Performance Trade-Off in Nickel-Based Hydrogen Evolution Catalysts for Anion Exchange Membrane Water Electrolysis: Effects of the Nickel Oxidation State and Particle Size
음이온 교환막 수전해용 니켈 기반 수소 발생 반응 촉매의 니켈 산화수 및 입자 크기에 따른 성능 트레이드 오프 연구
Jaehun Lee, Nam In Kim, Song Jin, Junyoung Park, Jun Seok Ha, Chiho Kim, Jooyoung Lee, Yangdo Kim, Sung Mook Choi
이재훈, 김남인, 진송, 박준영, 하준석, 김치호, 이주영, 김양도, 최승목
Korean J. Met. Mater. 2025;63(2):161-167.   Published online 2025 Feb 5
DOI: https://doi.org/10.3365/KJMM.2025.63.2.161

Abstract
The development of green hydrogen through anion exchange membrane water electrolysis (AEMWE) is essential for achieving carbon neutrality. Developing non-precious-metal catalysts for the hydrogen evolution reaction (HER) is crucial for the commercialization of AEMWE. In this study, Ni-CeO2/C catalysts were synthesized via a co-precipitation method and a reduction heat treatment..... More

    
Discovery of Alloy Catalysts for Ammonia Decomposition by Machine Learning-Based Prediction of Adsorption Energies
기계 학습 기반 흡착에너지 예측을 통한 암모니아 분해용 합금 촉매 탐색
Byung Chul Yeo, So Yun Jeong, Jun Su Kim, Donghun Kim
여병철, 정소윤, 김준수, 김동훈
Korean J. Met. Mater. 2024;62(11):920-927.   Published online 2024 Nov 5
DOI: https://doi.org/10.3365/KJMM.2024.62.11.920

Abstract
Ammonia decomposition has gained significant attention as an eco-friendly method for hydrogen production because it creates no carbon dioxide emissions. While Ru catalysts are known for their high activity in ammonia decomposition, their high cost makes them uneconomical for commercial use. Therefore, it is essential to explore novel alloy catalysts..... More

                
Bimetallic CoM-ZIF/CdS Photocatalyst Including Transition Metals(M) for Solar Water Splitting
물 분해 수소생산을 위한 전이금속(M) 바이메탈형 CoM-ZIF/CdS 광촉매 제조
Joo Hyun Kim, Yurim Lee, Chaehyun An, Sumin Lee, Jung Hyeun Kim
김주현, 이유림, 안채현, 이수민, 김정현
Korean J. Met. Mater. 2024;62(9):713-720.   Published online 2024 Sep 5
DOI: https://doi.org/10.3365/KJMM.2024.62.9.713

Abstract
Recently, due to energy shortages and environmental pollution caused by the continued use of fossil fuels, there is a growing need for renewable sources to replace fossil fuels. ZIF-67 has a porous structure, a large surface area, high thermal and chemical stability, and a narrow band gap, so it is..... More

                
Simultaneous Removal of Gas-Phase Pollutants CO and NO Using Ni-Fe Bimetallic Oxides Catalyst
Ni-Fe bimetallic oxides 촉매의 CO, NO 가스상 오염물질 동시저감 특성
Woon-Gi Kim, Jae-Il Jung, Myeung-Jin Lee, Bora Jeong, Bora Ye, Heesoo Lee, Hong-Dae Kim
김운기, 정재일, 이명진, 정보라, 예보라, 이희수, 김홍대
Korean J. Met. Mater. 2024;62(2):115-124.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.115

Abstract
Many studies have been conducted on methods to remove air pollutants. Among them, a representative commercial technology for reducing nitrogen oxides (NOX) is selective catalytic reduction (SCR) using NH3 as a reductant. However, the NH3-SCR technology has problems, such as the need for additional NH3 gas (Active-SCR), the fact that..... More

                
Effect of Sulfur Contents in NiZnS Composite Photocatalysts on Solar Water Splitting
황 함량 변화가 NiZnS 복합광촉매의 태양광 물분해 효율에 미치는 영향
Joo Hyun Kim, Eun seon Kang, Jung Hyeun Kim
김주현, 강은선, 김정현
Korean J. Met. Mater. 2023;61(4):284-290.   Published online 2023 Mar 22
DOI: https://doi.org/10.3365/KJMM.2023.61.4.284

Abstract
Solar energy is attracting much attention as an eco-friendly source for future energy needs. Herein, NiZnS photocatalysts were synthesized with a hydrothermal method at various sulfur contents. The ZnS material is widely used as a photocatalyst because of its high stability, low toxicity, and excellent charge separation characteristics. Nickel is..... More

                   Web of Science 3  Crossref 3
Recent Studies on Bimetallic PtM Catalyst for the Oxygen Reduction Reaction in Polymer Electrolyte Membrane Fuel Cells
고분자 전해질 연료전지의 산소환원반응에 대한 Pt-M 합금 촉매의 최근 연구 동향
Yu-Jin Shim, Won Suk Jung
심유진, 정원석
Korean J. Met. Mater. 2021;59(10):741-752.   Published online 2021 Sep 6
DOI: https://doi.org/10.3365/KJMM.2021.59.10.741

Abstract
Due to environmental pollution and global warming, research on new energy sources that can replace fossil fuels is important. A fuel cell is an eco-friendly energy conversion system that discharges water, and uses hydrogen as fuel. Although platinum is a widely used catalyst in PEMFCs, it has commercial limitations because..... More

                   Crossref 2
Low Temperature Growth of One-Dimensional Al and Al<sub>2</sub>O<sub>3</sub> Nano/Micro-Structures Using Al and SnO<sub>2</sub> Powder Mixture
Al과 SnO2 혼합 분말을 사용한 일차원 Al과 Al2O3 나노/마이크로구조의 저온 성장
Geun-Hyoung Lee
이근형
Korean J. Met. Mater. 2021;59(9):677-681.   Published online 2021 Aug 4
DOI: https://doi.org/10.3365/KJMM.2021.59.9.677

Abstract
One-dimensional Al and Al2O3 nano/microstructures were fabricated via thermal oxidation of Al and SnO2 powder mixtures at temperatures below the melting point of Al (660 oC). Furthermore, the synthesis process was carried out in air at atmospheric pressure, which made the process very simple and easy. Sn metal particles with..... More

                   Web of Science 1  Crossref 1
Tellurium-Incorporated Nickel-Cobalt Layered Double Hydroxide and Its Oxygen Evolution Reaction
Jung-Il Lee, Hui Ra Chae, Jeong Ho Ryu
Korean J. Met. Mater. 2021;59(7):491-498.   Published online 2021 Jun 16
DOI: https://doi.org/10.3365/KJMM.2021.59.7.491

Abstract
Transition-metal-based layered double hydroxides (LDHs) have attracted substantial attention as highly efficient oxygen evolution reaction (OER) catalysts because they are earth-abundant, low-cost, and environmentally friendly materials with favorable adsorption/desorption energies for intermittent reactants. However, the application of these LDHs as high-performance electrocatalysts is often hindered by their relatively sluggish electronic..... More

                Supplementary       Web of Science 5  Crossref 6
Manufacturing Cu<sub>x</sub>Zn<sub>1-x</sub>S Photocatalysts and Their Solar H<sub>2</sub> Production Characteristics with Varying Cu Content
구리함량 변화에 따른 CuxZn1-xS 광촉매 제조 및 태양광 물분해 수소 생산 특성 연구
Soojin Kahng, Jung Hyeun Kim
강수진, 김정현
Korean J. Met. Mater. 2020;58(12):907-914.   Published online 2020 Dec 4
DOI: https://doi.org/10.3365/KJMM.2020.58.12.907

Abstract
Solar water splitting is an attractive method for producing hydrogen from renewable natural resources, and heterostructure photocatalysts have been widely investigated for photocatalytic applications. Hetero-component photocatalysts can reduce the charge recombination process by improving electron utilization, and are considered promising candidates for solar water splitting. Amongst various heterostructure systems, combinations..... More

                   Web of Science 7  Crossref 6
Recent Progress in First Principle Calculation and High-Throughput Screening of Electrocatalysts: A Review
전기화학촉매의 제일원리 계산 및 하이스루풋 스크리닝 연구 동향: 리뷰
Changsoo Lee, Kihoon Bang, Doosun Hong, Hyuck Mo Lee
이창수, 방기훈, 홍두선, 이혁모
Korean J. Met. Mater. 2019;57(1):1-9.   Published online 2018 Dec 14
DOI: https://doi.org/10.3365/KJMM.2019.57.1.1

Abstract
There are many ongoing efforts to develop sustainable, clean, efficient, and economical pathways to produce renewable energy sources to satisfy worldwide energy demands. Electrochemical conversion processes, such as water splitting, CO2 conversion and N2 electroreduction, have been considered as successful approaches to solve these energy issues. Over the past decade,..... More

                   Web of Science 5  Crossref 7
Pattern Formation of Highly Ordered Sub-20 nm Pt Cross-Bar on Ni Thin Film
Ni 박막 위 20 nm급 고정렬 Pt 크로스-바 구조물의 형성 방법
Tae Wan Park, Hyunsung Jung, Young-Rae Cho, Jung Woo Lee, Woon Ik Park
박태완, 정현성, 조영래, 이정우, 박운익
Korean J. Met. Mater. 2018;56(12):910-914.   Published online 2018 Dec 5
DOI: https://doi.org/10.3365/KJMM.2018.56.12.910

Abstract
Since catalyst technology is one of the promising technologies to improve the working performance of next generation energy and electronic devices, many efforts have been made to develop various catalysts with high efficiency at a low cost. However, there are remaining challenges to be resolved in order to use the..... More

                   Crossref 3
Synthesis and Characterization of ZnO/TiO<sub>2</sub> Photocatalyst Decorated with PbS QDs for the Degradation of Aniline Blue Solution
Jong-Ho Lee, Hong-Joo Ahn, Jeong-Il Youn, Young-Jig Kim, Su-Jeong Suh, Han-Jun Oh
Korean J. Met. Mater. 2018;56(12):900-909.   Published online 2018 Dec 5
DOI: https://doi.org/10.3365/KJMM.2018.56.12.900

Abstract
A ZnO/TiO2 photocatalyst decorated with PbS quantum dots (QDs) was synthesized to achieve high photocatalytic efficiency for the decomposition of dye in aqueous media. A TiO2 porous layer, as a precursor photocatalyst, was fabricated using micro-arc oxidation, and exhibited irregular porous cells with anatase and rutile crystalline structures. Then, a..... More

                   Crossref 12
Properties of the Catalytic Nickel Silicides for a Dye-Sensitized Solar Cell
염료감응형 태양전지용 니켈실리사이드 촉매재료의 물성 연구
Taeyeul Park, Kwangbae Kim, Ohsung Song
박태열, 김광배, 송오성
Korean J. Met. Mater. 2017;55(6):440-445.   Published online 2017 Jun 1
DOI: https://doi.org/10.3365/KJMM.2017.55.6.440

Abstract
We have investigated the properties of nickel silicides as catalysts for dye-sensitized solar cells (DSSCs) by preparing several nickel silicide layers with a 100 nm-Ni/Si (100) structure using silicidation annealing for 30 minutes at 300 ℃ – 900 ℃. X-ray diffraction (XRD), four-point probe, field emission scanning electron microscope (FE-SEM),..... More

       Crossref 1
Fabrication of Porous Titania Particles from Complex Fluids by Spray Drying Process and Their Applications
Young-Sang Cho
Korean J. Met. Mater. 2017;55(4):264-273.   Published online 2017 Apr 6
DOI: https://doi.org/10.3365/KJMM.2017.55.4.264

Abstract
In this study, a spray drying system was used to prepare macroporous titania micro-particles for applications including UV blocking materials and photocatalysts. To synthesize the macroporous particles a colloidal templating method using polymeric beads as sacrificial templates and a titania nano-colloid as precursor material was adopted. The resulting porous titania..... More

       Crossref 1
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