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Differential Analysis of Surface-Dominated vs. Bulk-Dominated Electrochemical Processes in Lithium Iron Phosphate Cathodes
Byoung-Nam Park
Korean J. Met. Mater. 2024;62(8):624-630.   Published online 2024 Jul 31
DOI: https://doi.org/10.3365/KJMM.2024.62.8.624

Abstract
We employed electrophoretic deposition (EPD) using AC voltage to prepare lithium iron phosphate (LFP) Li-ion battery electrodes with varying the LFP thickness, to compare bulk-limited electro chemical reaction with the surface-limited electrochemical reactions. We analyzed the electrochemical performances of the thin and thick LFP electrodes at various scan rates. They..... More

                
Tuning Dielectric Constant of P3HT by Ultrasound-Induced Aggregation
Byoung-Nam Park
Korean J. Met. Mater. 2024;62(4):292-298.   Published online 2024 Mar 29
DOI: https://doi.org/10.3365/KJMM.2024.62.4.292

Abstract
Poly(3-hexylthiophene) (P3HT), a semiconducting polymer, is integral to the development of organic electronic devices. Its optoelectronic properties are significantly influenced by the nature of its intermolecular interactions, predominantly classified as J-type and H-type couplings. This study investigates the effect of sonication on the dielectric properties of P3HT, focusing on the..... More

                
Surfactant Composition Dependent Evolution of Electronic/Structural Properties of P3HT Nanoparticle Colloids Synthesized via Mini-Emulsion Technique
Byoung-Nam Park
Korean J. Met. Mater. 2024;62(4):284-291.   Published online 2024 Mar 29
DOI: https://doi.org/10.3365/KJMM.2024.62.4.284

Abstract
: This study investigates the influence of surfactant (sodium dodecyl sulfate, SDS) concentration on the size and optoelectronic properties of poly(3-hexylthiophene) (P3HT) nanoparticles (NPs) synthesized via the mini-emulsion technique. P3HT NPs were fabricated with varying SDS concentrations. The size dependent optoelectronic properties, including the highest occupied molecular orbital (HOMO) and..... More

                
Battery Cycle Stability in Additive-free MAX(Ti3AlC2) Li-ion Battery Anode
전기 영동 증착을 통한 첨가제 없는 MAX(Ti3AlC2) 리튬 이온 배터리 음극의 사이클 안정성
Jae-Young Hong, Byoung-Nam Park
홍재영, 박병남
Korean J. Met. Mater. 2023;61(2):84-90.   Published online 2023 Jan 27
DOI: https://doi.org/10.3365/KJMM.2023.61.2.84

Abstract
We fabricated an additive-free MAX(Ti3AlC2) phase Li-ion battery (LIB) electrode using the electrophoretic deposition (EPD) method. In this study, MAX, a precursor of MXene, which has recently been receiving great attention as a negative electrode material for LIBs, was manufactured as a coin cell through EPD rather than the conventional..... More

                   Web of Science 1  Crossref 1
Fabricating and Probing Forsterite Li-ion Battery Anode Electrodes
Forsterite 리튬 이온 배터리 음극 제조 및 전기화학적 반응 탐침
Dong-Ju Kim, Byoung-Nam Park
김동주, 박병남
Korean J. Met. Mater. 2022;60(11):851-857.   Published online 2022 Oct 31
DOI: https://doi.org/10.3365/KJMM.2022.60.11.851

Abstract
In an effort to minimize irreversible capacity loss and volume expansion, research on Si nanocomposite materials with a SiOx/Mg2SiO4/SiOx structure through a magnesiothermic reduction process (MTR) has attracted much attention from researchers. Mg2SiO4(forsterite) has been shown to improve the initial coulombic efficiency (ICE) by minimizing the irreversible capacity loss due..... More

                   Web of Science 2  Crossref 1
Lithiation/De-lithiation through Conversion and Alloying Reactions in MAPbBr3 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

                   Web of Science 1  Crossref 1
Effect of Co3O4/Additive Interface and Crystallite Size on Co3O4 Li-ion Battery Capacity and Cycle Stability
코발트 산화물 리튬 이온 배터리 용량 및 사이클 안정성에 대한 코발트 산화물/첨가제 계면 및 결정립 크기의 영향
Byoung-Nam Park
박병남
Korean J. Met. Mater. 2022;60(6):448-454.   Published online 2022 May 24
DOI: https://doi.org/10.3365/KJMM.2022.60.6.448

Abstract
Due to its high theoretical capacity in the conversion reaction, Co3O4, a transition metal oxide, has been attracting attention as an anode material for lithium-ion batteries. Comparing conventional slurry method with the electrophoretic deposition (EPD) method without additives (conductive agents and binders), we investigated the effect of the Co3O4/additive interface..... More

                   Web of Science 3  Crossref 3
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