A5077558935- Advancements in Battery Materials
- Supercapacitor Materials and Fabrication
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Electrochemical sensors and biosensors
- Advanced Photocatalysis Techniques
- Electrochemical Analysis and Applications
- Electrocatalysts for Energy Conversion
- Advanced Chemical Physics Studies
- Conducting polymers and applications
- Advanced biosensing and bioanalysis techniques
- MXene and MAX Phase Materials
- Advanced Battery Technologies Research
- Inorganic Chemistry and Materials
- 2D Materials and Applications
- Nanocluster Synthesis and Applications
- Graphene research and applications
- Luminescence Properties of Advanced Materials
- Advanced Nanomaterials in Catalysis
- Inorganic Fluorides and Related Compounds
- Chemical Synthesis and Characterization
- Nanoplatforms for cancer theranostics
- Gas Sensing Nanomaterials and Sensors
- Perovskite Materials and Applications
- Covalent Organic Framework Applications
Dongguk University
2016-2025
Korea Advanced Institute of Science and Technology
1996-2024
CCCC Highway Consultants (China)
2023
Government of the Republic of Korea
2015-2020
Seoul Institute
2017-2020
Korea Atomic Energy Research Institute
2018
Materials Research Center
2015-2017
Korea Basic Science Institute
2010-2013
LG (South Korea)
2003-2010
LG Chem (South Korea)
2001-2010
Abstract Rechargeable alkaline batteries (RABs) have received remarkable attention in the past decade for their high energy, low cost, safe operation, facile manufacture, and eco-friendly nature. To date, expensive electrode materials current collectors were predominantly applied RABs, which limited real-world efficacy. In present work, we propose a scalable process to utilize electronic waste (e-waste) Cu wires as cost-effective collector high-energy wire-type RABs. Initially, vertically...
By considering the qualitative benefits associated with solution rheology and mechanical properties of polymer semiconductors, it is expected that polymer-based electronic devices will soon enter our daily lives as indispensable elements in a myriad flexible ultra low-cost flat panel displays. Despite more than decade research focused on designing synthesizing state-of-the-art semiconductors for improving charge transport characteristics, current mobility values are still not sufficient many...
Hierarchical hollow spheres of Fe2O3@polyaniline are fabricated by template-free synthesis iron oxides followed a post in- and exterior construction. A combination large surface area with porous structure, fast ion/electron transport, mechanical integrity renders this material attractive as lithium-ion anode, showing superior rate capability cycling performance. As service to our authors readers, journal provides supporting information supplied the authors. Such materials peer reviewed may...
PdCu bimetallic nanoparticles (NPs) having mixed disordered face-centered cubic (fcc) and ordered body-centered (B2-type) phases enhance the kinetics of oxygen reduction/evolution reaction by significant reduction overpotentials, which leads to superb round-trip efficiency ∼80%. In addition, catalyst demonstrates a remarkable cyclic enhancement in stability an outstanding rate capability even at high current density 5000 mA gcarbon−1. Our first-principles calculations demonstrate that low...
Fast ion transport is essential for high rate capability in rechargeable battery operation. Recently, an ultrafast aluminum-ion was experimentally demonstrated through the reversible intercalation/deintercalation of chloroaluminate anions (AlCl4–) graphitic-foam cathodes. Using first-principles calculations, herein, we report that unique structural characteristic graphitic foam, i.e., mechanical flexibility few-layered graphene nanomaterials, plays a key role battery. We found AlCl4– stored...
Abstract The operating principle of conventional water electrolysis using heterogenous catalysts has been primarily focused on the unidirectional charge transfer within heterostructure. Herein, multidirectional concept adopted heterostructured to develop an efficient and robust bifunctional catalyst, which comprises perovskite oxides (La 0.5 Sr CoO 3– δ , LSC) potassium ion-bonded MoSe 2 (K-MoSe ). complementary from LSC K endows with electron-rich surface increased electrical conductivity,...
Transition metal selenides (TMSs) have enthused snowballing research and industrial attention due to their exclusive conductivity redox activity features, holding them as great candidates for emerging electrochemical devices. However, the real-life utility of TMSs remains challenging owing convoluted synthesis process. Herein, a versatile in situ approach design nanostructured high-energy solid-state hybrid supercapacitors (HSCs) is demonstrated. Initially, rose-nanopetal-like NiSe@Cu2 Se...
Tungsten disulfide (WS2) has recently emerged as a nontrivial material for electrochemical applications; however, boundaries associated with its 1T and 2H phases limit performance. Here, this issue is addressed by evolving dual-phase 1T-2H WS2 heterostructure that combines two different directly on the current collector. The resulting demonstrated 2D transformable phase structure, large interlayer distance, highly exposed edge-active sites. Theoretical calculations confirmed formed after...
Water electrolysis is emerging as a promising renewable-energy technology for the green production of hydrogen, which representative and reliable clean energy source. From economical industrial perspectives, development earth-abundant non-noble metal-based bifunctional catalysts, can simultaneously exhibit high catalytic activities stabilities both hydrogen evolution reaction (HER) oxygen (OER), critical; however, to date, these types catalysts have not been constructed, particularly,...
The development of effective oxygen evolution reaction (OER) and urea oxidation (UOR) on heterostructure electrocatalysts with specific interfaces characteristics provides a distinctive character. In this study, nanocubes (NCs) comprising inner cobalt oxysulfide (CoOS) NCs outer CoFe (CF) layered double hydroxide (LDH) are developed using hydrothermal methodology. During the sulfidation process, divalent sulfur ions (S
We studied the lithiation of Al2O3 and found energetically most favorable composition Li3.4Al2O3 using ab initio molecular dynamics simulations. The calculated Li/Al ratio corresponding volume expansion agree well with reported experimental observations. Al atoms accept electrons from incoming Li during lithiation, leading to formation various structures, that is, isolated atoms, dimers, trimers, ring- chain-type clusters. in optimal concentration diffuse faster by four (five) orders...
A non-labeled, portable plasmonic biosensor-based device was developed to enable the ultra-sensitive and selective detection of Salmonella typhimurium in pork meat samples. Specifically, a sensor, using self-assembly gold nanoparticles (AuNPs) achieve regulated diameter 20 nm for AuNP monolayers, used conduct high-density deposition on transparent substrate, which produced longitudinal wavelength extinction shifts via localized surface plasmon resonance (LSPR) signal. The aptamers conjugated...
Most Li-O2 batteries suffer from sluggish kinetics during oxygen evolution reactions (OERs). To overcome this drawback, we take the lesson other catalysis researches that showed improved catalytic activities by employing metal alloy catalysts. Such research effort has led us to find Pt3Co nanoparticles as an effective OER catalyst in batteries. The superior activity was reflected substantially decreased overpotentials and cycling/rate performance compared those of Density functional theory...
Despite the exceptionally large capacities in Li ion batteries, Si has been considered inappropriate for applications Na batteries. We report an atomic-level study on applicability of a anode batteries using ab initio molecular dynamics simulations. While crystalline is not suitable alloying with atoms, amorphous can accommodate 0.76 atoms per atom, corresponding to specific capacity 725 mA h g(-1). Bader charge analyses reveal that sodiation electrode continues until before local Na-rich...