구민수 교수

A novel strategy for introducing ion-permselective properties in a conventional polyethylene (PE) separator to inhibit the shuttle effect of polysulfides in high-performance lithium–sulfur batteries is reported.

Abstract Growing attention to the development of sustainable solar‐to‐energy conversion applications has resulted in the synthesis of promising and environment‐friendly nanomaterials as energy harvesters. Among various carbon nanomaterials, carbon dots (CDs) have received significant attention due to their excellent light absorption capability, broad absorption region, and superior photostability with enormous potential for solar energy applications. Therefore, utilizing and modulating the charg

This review focuses on the covalent functionalization of GO and presents various strategies to control its dispersibility, conductivity, and catalytic activity toward potential applications.

As the demand for next-generation electronics is increasing, organic and polymer-based semiconductors are in the spotlight as suitable materials owing to their tailorable structures along with flexible properties. Especially, polyimide (PI) has been widely utilised in electronics because of its outstanding mechanical and thermal properties and chemical resistance originating from its crystallinity, conjugated structure and π-π interactions. PI has recently been receiving more attention in the en

Growing environmental concern has increased the demand for clean energy, and various technologies have been developed to utilize renewable energy sources. With the development of highly efficient energy conversion and storage systems, fundamental studies on the electrochemistry of electrodes are critical because the functionality of most of these systems relies on interfacial electrochemical reactions that occur on the surfaces of the electrodes. In this context, efficient electrode design metho

Controlling the architecture of hybrid nanomaterial electrodes is critical for understanding their fundamental electrochemical mechanisms and applying these materials in future energy conversion and storage systems. Herein, we report highly tunable electrocatalytic multilayer electrodes, composed of palladium nanoparticles (Pd NPs) supported by graphene sheets of varying lateral sizes, employing a versatile layer-by-layer (LbL) assembly method. We demonstrate that the electrocatalytic activity i

Polyphenols have been investigated for their potential to mitigate inflammation in the context of atopic dermatitis (AD). In this study, epigallocatechin-3-gallate (EGCG)-based carbon dots (EGCG@CDs) were developed to enhance transdermal penetration, reduce inflammation, recapitulate superoxide dismutase (SOD) activity, and provide antimicrobial effects for AD treatment. The water-soluble EGCG@CDs in a few nanometers size exhibit a negative zeta potential, making them suitable for effective tran

In this study, a cobalt oxide (Co3O4) supercapacitor electrode is prepared using ultrafast annealing to enhance its supercapacitive performance. The Co3O4 active materials, synthesized through hydrothermal synthesis, are heat-treated using a conventional muffle furnace (constant heat annealing (CHA)) and ultrafast intensive pulsed light (IPL) flash annealing (instant heat annealing (IHA)). Structural and morphological analysis reveals that CHA Co3O4 has a nano-rope structure with micro-sheets. I

In the quest for sustainable and efficient hydrogen peroxide (H2O2) production, this study introduces an organic and inorganic hybrid photocatalyst synthesized through a facile self-polymerization of dopamine hydrochloride (DA) to polydopamine (PDA) on titanium dioxide (TiO2) nanoparticles. By meticulously optimizing the DA-to-TiO2 molar ratio, we achieved an optimal photocatalyst composition, designated as TiO2@PDA, that exhibits remarkable photocatalytic efficiency in H2O2 production under sim

In comparison with conventional inorganic photocatalysts, organic photoactive materials are promising photocatalysts owing to their high extinction coefficient and chemical tunability. However, their limited photocatalytic activity, induced by a low relative permittivity with high recombination energy, poses significant challenges. Herein, a highly efficient bifunctional photocatalytic hybrid multilayer electrode is designed by a versatile layer-by-layer (LbL) assembly of nanoscale graphene oxid

Abstract Solar-driven photocatalytic production of hydrogen peroxide (H2O2) requires only sunlight, oxygen, and water, making it a green and sustainable alternative to conventional H2O2 production processes. We present photocatalytic carbon dots (CDs) as a new candidate for high-performance H2O2 production. Owing to the generation of an excellent charge carrier and the presence of various oxygen-containing functional groups, CDs showed an outstanding H2O2 production capability of 609.4 μmol g-1