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Investigation of the Calciothermic Reduction of TiO<sub>2</sub> for the Green Production of Ti and TiH<sub>2</sub> Powders
친환경 Ti 및 TiH2 분말 제조를 위한 TiO2의 칼슘열환원에 대한 기초연구
Sung-Hun Park, Jungshin Kang, Ho-Sang Sohn
박성훈, 강정신, 손호상
Korean J. Met. Mater. 2024;62(3):190-203.   Published online 2024 Feb 28
DOI: https://doi.org/10.3365/KJMM.2024.62.3.190

Abstract
To develop an eco-friendly titanium (Ti) production process, the calciothermic reduction of titanium dioxide (TiO2) was investigated. The mechanism involved in the reduction of TiO2 using calcium (Ca) was examined. The influence of a molten salt, calcium chloride (CaCl2), on the calciothermic reduction was investigated by conducting experiments at 1123..... 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

                
Electrochemical Characteristics of Elastic, Non-Polar Polyurethane-Based Polymer Gel Electrolyte for Separator-Less Lithium-Ion Batteries
Alloyssius E.G. Gorospe, Dongwoo Kang, Dongwook Lee
Korean J. Met. Mater. 2023;61(8):616-624.   Published online 2023 Jul 20
DOI: https://doi.org/10.3365/KJMM.2023.61.8.616

Abstract
Lithium-ion batteries (LIBs) have undergone countless enhancements in the past decade, mainly improvements in the basic components: electrodes, electrolyte, and separator. The separator, which acts as a physical barrier between the two electrodes, does not directly participate in the charge and energy storage. However, it is involved in the safety, form..... More

                
Ion Exchange for the Purification of Co(II) or Ni(II) from Acidic and Ammonia Solutions in the Recycling of Spent Lithium-Ion Batteries
Thanh Tuan Tran, Man Seung Lee
Korean J. Met. Mater. 2022;60(12):902-911.   Published online 2022 Nov 25
DOI: https://doi.org/10.3365/KJMM.2022.60.12.902

Abstract
The recycling of critical metals like cobalt and nickel from spent lithium-ion batteries (LIBs) is of immense importance in sustainable manufacturing. This work aims to purify Co(II) and Ni(II) present in acidic and ammonia solutions using ion exchange. AG-1-X8 resin modified with thiocyanate anions (R4N+SCN resin) was used to separate..... More

                   Web of Science 1  Crossref 1
Lithiation/De-lithiation through Conversion and Alloying Reactions in MAPbBr<sub>3</sub> Single Crystal Flake Li-ion Battery Anodes
MAPbBr3 단결정 플레이크 리튬 이온 배터리 전극의 전환반응 및 합금화 반응을 통한 리튬이온 삽입/탈리
In-Seok Kang, Byoung-Nam Park
강인석, 박병남
Korean J. Met. Mater. 2022;60(11):845-850.   Published online 2022 Oct 31
DOI: https://doi.org/10.3365/KJMM.2022.60.11.845

Abstract
In this study, single-crystalline methylammonium lead tribromide (MAPbBr3, CH3NH3PbBr3) flakes with a higher theoretical specific capacity than methylammonium lead iodide (MAPbI3, CH3NH3PbI3), the prototype of organic/inorganic hybrid perovskite, were synthesized by the inverse temperature crystallization method. The combination of the additive-free electrophoretic deposition (EPD) system and the single crystal fabrication..... More

                
Selective Extraction of Cu(II) from the Hydrochloric Acid Leaching Solution of Spent Lithium-Ion Batteries by a Mixture of Aliquat 336 and LIX 63
Jiangxian Wen, Man Seung Lee
Korean J. Met. Mater. 2022;60(10):751-759.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.751

Abstract
The smelting reduction of spent LIBs produces metallic alloys containing Co, Cu, Fe, Mn, and Ni. These metallic alloys can be completely dissolved by 2 M HCl solution containing H2O2 as an oxidizing agent. Extraction of the leaching solution with D2EHPA results in a Fe(III) free raffinate. In this work,..... More

                   Web of Science 3  Crossref 2
Lithium Recovery from NCM Lithium Ion Battery by Carbonation Roasting Followed by Water Leaching
NCM계 리튬이온 전지 양극재의 탄산화 배소와 수침출 의한 Li 회수
Dae-Hyeon Lee, So-Yeon Lee, So-Yeong Lee, Ho-Sang Sohn
이대현, 이소연, 이소영, 손호상
Korean J. Met. Mater. 2022;60(10):744-750.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.744

Abstract
Lithium is a representative rare metal and ranks 32nd in abundance among elements in the earth’s crust. Lithium is used in a variety of applications, including the production of organolithium compounds, as an alloying addition to aluminum and magnesium, and as the anode in rechargeable lithium ion batteries especially for..... More

                   Crossref 1
Recovery of High-Purity Lithium Compounds from the Dust of the Smelting Reduction Process for Spent Lithium-Ion Batteries
Thanh Tuan Tran, Seong Ho Son, Man Seung Lee
손성호, 이만승
Korean J. Met. Mater. 2022;60(4):291-300.   Published online 2022 Mar 28
DOI: https://doi.org/10.3365/KJMM.2022.60.4.291

Abstract
The recovery of valuable metals such as cobalt, nickel, and lithium from spent lithium-ion batteries (LIBs) has attracted much attention. In this study, a hydrometallurgical process for the recovery of high-purity lithium compounds like Li2CO3 and Li3PO4 from dust containing Li, Co, Ni, Cu, Fe, Mn, and Si produced during..... More

                   Web of Science 2  Crossref 3
Ceramic-Coated Separator to Enhance Cycling Performance of Lithium-ion Batteries at High Current Density
높은 전류밀도에서 리튬이온배터리의 사이클 성능 향상을 위한 세라믹 코팅 분리막 연구
Kyusang Cho, Chandran Balamurugan, Hana Im, Hyeong-Jin Kim
조규상, 찬드라 발라무루간, 임하나, 김형진
Korean J. Met. Mater. 2021;59(11):813-820.   Published online 2021 Oct 28
DOI: https://doi.org/10.3365/KJMM.2021.59.11.813

Abstract
Given the global demand for green energy, the battery industry is positioned to be an important future technology. Lithium-ion batteries (LIBs), which are the most widely used battery in the market, are the focus of various research and development efforts, from materials to systems, that seek to improve their..... More

                   Web of Science 3  Crossref 3
Structure and Ion Conductivity Study of Argyrodite (Li<sub>5.5</sub>PS<sub>4.5</sub>Cl<sub>1.5</sub>) according to Cooling Method
냉각 방법에 따른 Argyrodite (Li5.5PS4.5Cl1.5)의 구조 및 이온전도성 연구
Sangwon Park, Jin-Woong Lee
박상원, 이진웅
Korean J. Met. Mater. 2021;59(4):247-255.   Published online 2021 Mar 24
DOI: https://doi.org/10.3365/KJMM.2021.59.4.247

Abstract
All solid-state batteries (ASSBs) are now anticipated to be an ultimate solution to the persistent safety issues of conventional lithium-ion batteries (LIBs). Contemporary society’s expanding power demands and growing energy consumption require energy storage with greater reliability, safety and capacity, which cannot be easily achieved with current state-of-the-art liquid-electrolyte-based LIBs...... More

                   Web of Science 4  Crossref 4
A Study on Lithium Hydroxide Recovery Using Bipolar Membrane Electrodialysis
바이폴라 전기투석을 이용한 수산화리튬 회수에 관한 기초 연구
Yeonchul Cho, Kihun Kim, Jaewoo Ahn, Jaeheon Lee
조연철, 김기훈, 안재우, 이재헌
Korean J. Met. Mater. 2021;59(4):223-232.   Published online 2021 Mar 24
DOI: https://doi.org/10.3365/KJMM.2021.59.4.223

Abstract
Bipolar electrodialysis was used in a process of desalting a lithium sulfate solution, converting it to lithium hydroxide and sulfuric acid, and concentrating and recovering them. The effects of the experimental variables such as applied voltage, the concentration of electrode solution, the concentration of raw material solution, volume ratio, and..... More

                   Web of Science 2  Crossref 5
A Method of Synthesizing Lithium Hydroxide Nanoparticles Using Lithium Sulfate from Spent Batteries by 2-Step Precipitation Method
Soyeong Joo, Hyun-Woo Shim, Jin-Ju Choi, Chan-Gi Lee, Dae-Guen Kim
Korean J. Met. Mater. 2020;58(4):286-291.   Published online 2020 Mar 10
DOI: https://doi.org/10.3365/KJMM.2020.58.4.286

Abstract
In this work, LiOH was synthesized using highly soluble Li2SO4. To enhance efficiency, this synthesis was performed using the precipitation method, and the correlation between each experimental condition and the synthesis of LiOH was investigated. The particle size and crystalline properties were tailored by controlling various experimental conditions, including the..... More

                   Web of Science 5  Crossref 6
A Study on the Separation and Concentration of Li from Li-Containing Waste Solutions by Electrodialysis
리튬함유 폐액으로부터 전기투석에 의한 리튬의 분리·농축 연구
Jueun Lee, Hongil So, Yeonchul Cho, Inhwan Jang, Jaewoo Ahn, Jaeheon Lee
이주은, 소홍일, 조연철, 장인환, 안재우, 이재헌
Korean J. Met. Mater. 2019;57(10):656-662.   Published online 2019 Sep 6
DOI: https://doi.org/10.3365/KJMM.2019.57.10.656

Abstract
Electrodialysis was used to develop a highly efficient process for concentrating and recovering Li from the Li-containing waste solution that is generated after recovering Co and Ni from a leach solution of waste cathode materials of Li ion batteries. The optimum conditions were investigated by comparing the concentration of Li..... More

                   Web of Science 4  Crossref 6
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 7  Crossref 8
Study on the Optimum Conditions for Synthesizing a Cathode Active Material Precursor in Li-Ion Batteries Using a Taylor Reactor
테일러 반응기를 이용한 최적의 리튬이차전지용 양극활물질 전구체 합성 조건 선정을 위한 연구
Deokhyun Han, Iljeong Park, Minjun Kim, Daeweon Kim, Hangchul Jung
한덕현, 박일정, 김민준, 김대원, 정항철
Korean J. Met. Mater. 2019;57(6):360-365.   Published online 2019 May 16
DOI: https://doi.org/10.3365/KJMM.2019.57.6.360

Abstract
Li(Ni1-x-yCoxMny)O2 (NCM) materials, which are the cathode active material for lithium ion batteries, have been developed and widely used as an alternative to lithium cobalt oxide, because of the high cost of cobalt. To synthesize high quality NCM materials, it is important to control the process manufacturing of the NCM..... More

                   Web of Science 10  Crossref 5
Recovery of Lithium as Li<sub>3</sub>PO<sub>4</sub> from Waste Water in a LIB Recycling Process
폐리튬이온전지 재활용 공정 폐액으로부터 리튬의 회수를 위한 인산리튬 침전 특성 연구
Young-Jun Song
송영준
Korean J. Met. Mater. 2018;56(10):755-762.   Published online 2018 Oct 5
DOI: https://doi.org/10.3365/KJMM.2018.56.10.755

Abstract
This study was conducted to obtain engineering design data for a process to recover lithium in the form of Li3PO4 from the waste water of a lithium ion battery (LIB) recycling process. The influence of temperature, pH, and concentration on the solubility of Li3PO4 and the reaction rate in the..... More

                   Crossref 16
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
Fabrication of Si/SiO<sub>x</sub> Anode Materials by a Solution Reaction-Based Method for Lithium Ion Batteries
Hyeon-Woo Yang, Jung-Ho Lee, Sang-Chul Jung, Seung-Taek Myung, Woo-Seung Kang, Sun-Jae Kim
Korean J. Met. Mater. 2016;54(10):780-786.   Published online 2016 Oct 5
DOI: https://doi.org/10.3365/KJMM.2016.54.10.780

Abstract
Si/SiOx composite anodes were prepared using a facile solution reaction-based method. Their initial capacity was significantly improved to 1.3 times that of SiOx by incorporating 3 wt% silicon nanoparticles into the SiOx. The capacity retention of the Si/SiOx anodes after 50 charge-discharge cycles was significantly enhanced, to 99%, compared with..... More

       Crossref 5
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