Research Achievements 5 페이지 | 포항공과대학교 친환경소재대학원

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Research Achievements

Total 189건 5 페이지

125

ICMEL [ICMEL] Prof. Kyoungdoc Kim: Revisiting precipitates in Al-Cu-Li alloys: Experiments and first-principles calculations of thermodynamic stability of Al2CuLi(T1) precipitate Abstract: We recently proposed two atomic structures of the Al2CuLi (T1) phase using first-principles density functional theory calculations. Here, we find that both the previously proposed T1 phases (Al6Cu4Li3, Al13Cu7Li6) are predic..

작성자 최고관리자 작성일 2024-05-17
124

ICMEL [ICMEL] Prof. Kyoungdoc Kim: Strengthening model development and effects of low diffusing solutes to coarsening resistance in aluminum alloys Abstract: A modified Orowan strengthening model is proposed to account for finite rod-shaped precipitates with hemispherical caps in aluminum alloy systems. A combined computational and experimental approach is used to study the influ..

작성자 최고관리자 작성일 2024-05-17
123

NEDL [NEDL] Prof. Changshin Jo: Flashlight treatment for instantaneous structuring of dense MXene film into porous MXene/TiO2 nanocomposite for lithium-ion battery anodes Abstract: MXenes, the two-dimensional metal carbides and nitrides, have been considered a new class of electrode materials with their noticeable performance in various energy storage systems. Furthermore, the unique property and morph..

작성자 최고관리자 작성일 2024-04-24
122

NEDL [NEDL] Prof. Changshin Jo: Carbon cloth modified by direct growth of nitrogen-doped carbon nanofibers and its utilization as electrode for zero gap flow batteries Abstract: The synthetic procedure and characterization of carbon nanofibers (CNFs) grown on carbon cloth (CC) are explored in this study, with a focus on their potential application as electrodes in vanadium redox flow batteries (VRFB..

작성자 최고관리자 작성일 2024-04-24
121

CSPL [CSPL] Prof. Jung-Wook Cho: Deciphering the Mixed-Alkali effect in supercooled oxide liquids: Results from dynamic and thermodynamic measurements The fundamental nature of the mixed-alkali effect (MAE) on viscosity, fragility index and glass transition of supercooled borate and phosphate liquids is studied using a combination of dynamic and thermodynamic measurements. The ne..

작성자 최고관리자 작성일 2024-03-12
120

NEDL [NEDL] Prof. Changshin Jo: Operational strategy for multiredox-reaction electrodes for long-lifespan Na-ion hybrid capacitors AbstractThe development of high-performance sodium storage materials is becoming necessary owing to the limited availability of lithium. Materials undergoing a multiredox-reaction mechanism are highly promising for sodium-ion batterie..

작성자 최고관리자 작성일 2023-10-26
119

NEDL [NEDL] Prof. Changshin Jo: Biopolymer-blended protective layer for use in stabilizing the zinc anode in metal battery applications AbstractMetallic Zn anodes have recently attracted attention for use in large-scale energy storage systems; however, controlling the nucleation and growth behaviors of Zn is essential owing to its poor reversibility. In this study, we..

작성자 최고관리자 작성일 2023-10-26
118

NEDL [NEDL] Prof. Changshin Jo: Thickness-ControllableElectrodeof Lithium Titanium Oxide Nanowire Sheetswith Multiple Stacked Morphology for Ultrahigh Areal Capacityand Stabilityof Lithium-IonBatteries AbstractNowadays, thickness optimization of an electrode is considered an effective approach to achieve a high energy density or high areal capacity of Li-ion batteries. In this paper, we report a simple electrospinning technique to d..

작성자 최고관리자 작성일 2023-10-26
117

NEDL [NEDL] Prof. Changshin Jo: Amorphous antimony oxide as reaction pathway modulator toward electrocatalytic glycerol oxidation for selective dihydroxyacetone production AbstractAchievement of an efficient and stable electrocatalytic glycerol oxidation reaction (EGOR) is limited by a lack of strategies for designing advanced electrocatalysts that satisfy the desired product selectivity, high electroca..

작성자 최고관리자 작성일 2023-10-26
116

NEDL [NEDL] Prof. Changshin Jo: Spinodal Decomposition Method for Structuring Germanium–Carbon Li-Ion Battery Anodes AbstractTo increase the energy density of lithium-ion batteries (LIBs), high-capacity anodes which alloy with Li ions at a low voltage against Li/Li+ have been actively pursued. So far, Si has been studied the most extensively because..

작성자 최고관리자 작성일 2023-10-26
115

NEDL [NEDL] Prof. Changshin Jo: Pseudocapacitive behavior of mesoporous tungsten oxide in aqueous Zn2+ electrolyte AbstractAqueous Zn-ion batteries or capacitors have attracted great interest for their potential use in grid-scale energy storage systems (ESSs). They have suitable properties such as high safety, low-cost materials, and stability of ..

작성자 최고관리자 작성일 2023-10-25
114

ADL [ADL] Prof. Yoon-Uk Heo: Direct observation of the ledge-typed twin boundary in a martensitic steel The structure at the {112} twin boundaries in martensitic steels has been extensively debated recently. On the one hand, it was claimed to be the omega phase, similar to Ti alloys. On the other hand, it was considered artifacts ind..

작성자 최고관리자 작성일 2023-09-14
113

ADL [ADL] Prof. Yoon-Uk Heo: Role of dislocation climb on twin boundary and antiphase boundary formations in inverse-spinel MnAl2O4 The defects, e.g., stacking faults (SFs), antiphase boundaries (APBs), and twin, have been considered the critical components commonly introduced during the synthesis process of spinel oxides. In this study, employing advanced tran..

작성자 최고관리자 작성일 2023-09-14
112

SSL [SSL] Prof. Sung-Joon Kim: Strong resistance to Zn-assisted liquid metal embrittlement of austenitic-TWIP/martensitic-HSLA multi-layered steel sheets additively manufactured by laser cladding Abstract: As a novel design idea to overcome a shortcoming of liquid metal embrittlement (LME) occurred frequently in twinning-induced plasticity (TWIP) steel, multi-layered steel (MLS) sheets consisting of austenitic TWIP and high-st..

작성자 최고관리자 작성일 2023-09-01
111

SSL [SSL] Prof. Sung-Joon Kim: Barricading Absorbed Hydrogen and Mitigating Hydrogen Embrittlement in High Mn Steel Through Superficial Strain-Induced ε-Martensite Abstract: This study reports a novel result on the effect of strain-induced superficial phase transformation on the mitigating hydrogen embrittlement of an austenitic high Mn steel. The obtained results revealed that the strain-induce..

작성자 최고관리자 작성일 2023-08-14
110

SSL [SSL]Prof. Sung-Joon Kim: Strain hardening analysis and deformation micromechanisms in high strength-high ductility metastable duplex stainless steels: Role of sustained stacking faults in the work ha… Abstract: The present research deals with work hardening analysis of two types (4Mn & 8Mn) high strength-high plasticity metastable duplex stainless steel (DSS). A three-stage (I, II, III) strain hardening rate (SHR) was recognize..

작성자 최고관리자 작성일 2023-08-14

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