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A Study on the Treatment of Sodium Sulfate Waste Solution by Constant Current Control Bipolar Membrane Electrodialysis
정전류 제어 방식 바이폴라막 전기투석에 의한 황산나트륨 폐액 처리에 관한 연구
Minhyuk Seo, Youngjae Lee, Yeonchul Cho, Jaewoo Ahn
서민혁, 이영재, 조연철, 안재우
Korean J. Met. Mater. 2024;62(12):944-953.   Published online 2024 Nov 29
DOI: https://doi.org/10.3365/KJMM.2024.62.12.944

Abstract
As environmental pollution has intensified, the importance of recycling spent lithium-ion batteries (LIBs) has significantly increased. Valuable metals contained in LIBs are typically recovered through processes such as leaching, precipitation, and solvent extraction. However, these recycling processes require large amounts of sulfuric acid and caustic soda, resulting in the generation..... More

                
Alleviating the Polysulfide Shuttle Effect by Optimization of 3D Flower-Shaped Vanadium Dioxide for Lithium-Sulfur Batteries
이산화바나듐 나노플라워 구조 최적화를 통한 리튬-황 전지의 폴리설파이드 셔틀 효과 완화
Su Hwan Jeong, Hyeon-jun Choi, Sang Jun Lee, Dong Park Lee, Suyoon Eum, San Moon, Jong Hyuk Yun, Joo-Hyung Kim
정수환, 최현준, 이상준, 이동박, 엄수윤, 문산, 윤종혁, 김주형
Korean J. Met. Mater. 2023;61(11):849-856.   Published online 2023 Oct 29
DOI: https://doi.org/10.3365/KJMM.2023.61.11.849

Abstract
With the rapid development of portable devices and Energy Storage Systems (ESS), secondary batteries with high energy density and high capacity are in great demand. Among various candidates, Lithium-sulfur (Li-S) batteries have been considered for next-generation energy devices given their high theoretical capacity (1675 mAh g-1) and energy density (2500..... More

                   Web of Science 1  Crossref 2
Comparative Study on the Corrosion Behavior of Materials in Heat Recovery Steam Generators for Combined Cycle Power Plant, Based on Sulfuric Acid Concentrations: Carbon Steels vs. Duplex Stainless Steel (UNS S32205)
복합화력발전 내 배열회수 보일러용 소재(탄소강 계열 및 듀플렉스 스테인리스강(UNS S32205))의 황산농도에 따른 부식거동 비교 연구
Yu Sung Jang, Jin Sung Park, Seung Gab Hong, Sung Jin Kim
장유성, 박진성, 홍승갑, 김성진
Korean J. Met. Mater. 2023;61(11):830-841.   Published online 2023 Oct 29
DOI: https://doi.org/10.3365/KJMM.2023.61.11.830

Abstract
This study examined the effects of sulfuric acid concentrations on the corrosion behaviors of three types of commercial steels, conventional carbon steel (SA192), sulfuric acid dew resistant steel (S-TEN), and duplex stainless steel (S32205), considered to be potential materials for the heat recovery steam generator (HRSG) in combined cycle power..... More

                   Web of Science 1  Crossref 1
Bandgap Reduction and Enhanced Photoelectrochemical Water Electrolysis of Sulfur-doped CuBi<sub>2</sub>O<sub>4</sub> Photocathode
Eunhwa Kim, Sanghan Lee, Sangwoo Ryu
Korean J. Met. Mater. 2023;61(2):115-119.   Published online 2023 Jan 27
DOI: https://doi.org/10.3365/KJMM.2023.61.2.115

Abstract
As interest in hydrogen energy grows, eco-friendly methods of producing hydrogen are being explored. CuBi2O4 is one of the p-type semiconductor cathode materials that can be used for photoelectrochemical hydrogen production via environment-friendly water electrolysis. CuBi2O4 has a bandgap of 1.5 – 1.8 eV which allows it to photogenerate electrons..... More

                
Influence of Trace Amounts of Sulfur on the Microstructure and Mechanical Properties of Directionally Solidified Ni-Based Superalloy GTD-111
일방향응고한 GTD-111 초내열합금의 황 함량에 따른 미세조직 및 고온 기계적 특성
Dong-Soo Kang, Hyungsoo Lee, Dae Won Yun, Hi Won Jeong, Young-Soo Yoo, Seong-Moon Seo
강동수, 이형수, 윤대원, 정희원, 유영수, 서성문
Korean J. Met. Mater. 2022;60(10):782-792.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.782

Abstract
The influence of trace amounts of sulfur (S) on the microstructural evolution, tensile and creep properties in directionally solidified (DS) Ni-based superalloy GTD-111 were systematically investigated. Doping of S in the range of < 1 to 154 ppm resulted in the formation of a Ti2SC-type carbosulfide phase near the coarse..... More

                   Web of Science 2  Crossref 3
Separation of Pd(II) and Zn(II) from Sulfuric Acid Solution by Commercial Extractants
황산용액에서 상용화 추출제에 의한 팔라듐(II)과 아연(II)의 분리
Si Jeong Song, Viet Nhan Hoa Nguyen, Man Seung Lee
송시정, Viet Nhan Hoa Nguyen, 이만승
Korean J. Met. Mater. 2022;60(2):132-140.   Published online 2022 Jan 12
DOI: https://doi.org/10.3365/KJMM.2022.60.2.132

Abstract
Spent electroplating solutions contain a small amount of Pd(II). This Pd(II) can be concentrated by cementation with zinc metal powder. In order to recover pure palladium, a hydrometallurgical process consisting of leaching followed by solvent extraction was developed in this work. First, suitable extractants for the selective extraction of Pd(II)..... More

                   Web of Science 2  Crossref 2
Selective Extraction of Cu(II) from Sulfuric Acid Leaching Solutions of Spent Lithium Ion Batteries Using Cyanex 301
폐리튬 이차전지 황산침출용액에서 Cyanex 301에 의한 구리(II)의 선택적 추출
Se Ah Lee, Man Seung Lee
이세아, 이만승
Korean J. Met. Mater. 2019;57(9):596-602.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.596

Abstract
Spent lithium ion batteries contain cobalt, copper, lithium, manganese and nickel. Recovery of these metals with high purity from spent lithium ion batteries is of importance. A sulfuric acid solution is generally employed for the treatment of spent lithium ion batteries, but it is difficult to separate these metal ions..... More

                   Web of Science 9  Crossref 10
Sulfur Poisoning of Ni Anode as a Function of Operating Conditions in Solid Oxide Fuel Cells
고체산화물 연료전지의 운전 조건에 따른 니켈 전극 황 피독 현상
Ho Seong Lee, Hyun Mi Lee, Hyung-Tae Lim
이호성, 이현미, 임형태
Korean J. Met. Mater. 2018;56(12):893-899.   Published online 2018 Dec 5
DOI: https://doi.org/10.3365/KJMM.2018.56.12.893

Abstract
In the present study, we investigated the sulfur poisoning of the Ni anode in solid oxide fuel cells (SOFCs) as a function of operating conditions. Anode supported cells were fabricated, and sulfur poising tests were conducted as a function of current density, H2S concentration and humidity in the anode gas...... More

                   Crossref 2
Effect of Preparation Methods on the Electrochemical Performance of All-solid-state Li-S Batteries
탄소-황 복합 전극 제조 방법에 따른 리튬-황 전고체 전지 성능 변화
Han Ul Choi, Ju Sung Jin, Hyung-Tae Lim
최한울, 진주성, 임형태
Korean J. Met. Mater. 2017;55(7):503-508.   Published online 2017 Jul 4
DOI: https://doi.org/10.3365/KJMM.2017.55.7.503

Abstract
All-solid-state Li-S batteries were fabricated with lithium silicide anodes (Li4.4Si), sulfide-based glass electrolyte (Li2S-P2S5), and a sulfur composite cathode. The sulfur based composite cathode was prepared using two methods; (Case 1) mortar-mixing and (Case 2) planetary ball milling at a rotation speed of 370 rev/min for 15 min. SEM analysis..... More

       Crossref 2
Comparative Study on the Corrosion Behavior of Materials in Heat Recovery Steam Generators for Combined Cycle Power Plant, Based on Sulfuric Acid Concentrations: Carbon Steels vs Duplex Stainless Steel (UNS S32205)
복합화력발전 내 배열회수 보일러용 소재 (탄소강 계열 및 듀플렉스 스테인 리스강(UNS S32205))의 황산농도에 따른 부식거동 비교 연구

Published online 1999 Nov 30
Abstract
: This study examined the effects of sulfuric acid concentrations on the corrosion behaviors of three types of commercial steels, conventional carbon steel (SA192), sulfuric acid dew resistant steel (S-TEN), and duplex stainless steel (S32205), considered to be potential materials for the heat recovery steam generator (HRSG) in combined cycle power plants. Based... More
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