Korea Institute of Energy Research

Post-Functionalized Vinyl-Addition Polynorbornenes as Modular Platforms for Anion Exchange Membranes: Structure–Property Relationships

Abstract Fully hydrocarbon-based anion exchange membranes (AEMs) were developed through a facile post-polymerization strategy using vinyl-addition polynorbornene (VA-PNB) backbones. A high-molecular-weight poly(5-vinyl-2-norbornene) (PVNB) precursor was synthesized via chemoselec...

Dynamic surface reconstruction during oxygen evolution enabled by exsolution in Al-doped LaNiO3 for efficient AEM water electrolysis

Surface reconstruction during oxygen evolution reaction (OER) has been considered a key mechanism governing the catalytic activity and durability of perovskite oxides. However, effective materials design strategies to regulate surface reconstruction remain limited. In this study,...

Layer-by-Layer Electrode Design Integrating a Macroporous Carbon-Nanotube Skeleton for an Anion-Exchange Membrane Water Electrolyzer

Abstract Three-dimensional porous electrodes (anodes and cathodes) using only non-noble-metal electrocatalysts are important for enhancing the performance of anion-exchange membrane water electrolysis (AEMWE), contributing to reduced green-hydrogen production costs. This study de...

Sodium‐Induced Process Window Expansion Enables High‐Performance Solution‐Processed CISSe Thin‐Film Solar Cells for Tandem Applications

ABSTRACT This work reports a sodium‐enabled breakthrough in air‐processable N,N‐dimethylformamide (DMF) molecular ink routes for CuIn(S,Se) 2 (CISSe) solar cells. Excess Na incorporation significantly expands the otherwise narrow air annealing temperature (AAT) window required fo...

Synergistic Engineering of Membrane–Electrode Interfaces via Surface Patterning in Anion Exchange Membrane Water Electrolysis

ABSTRACT The membrane–electrode interface critically governs the performance and durability of anion exchange membrane (AEM) water electrolysis, yet engineering these interfaces in pre‐formed hydrocarbon AEMs remains challenging due to their high glass‐transition temperatures and...

Towards a universal ovarian cancer biomarker model: clinical validation of Trx1 and CA125 dual strategy

Abstract Background Ovarian cancer is the fifth leading cause of cancer-related mortality in women, with early detection being critical for improving patient outcomes. Current diagnostic biomarkers, including Cancer antigen 125 (CA125), human epididymis protein 4 (HE4), and their...

Plasma‐Engineered Polyethylene‐Reinforced Anion Exchange Membranes With Low Ionic Resistance and Low Hydrogen Crossover for Water Electrolysis

ABSTRACT Anion exchange membrane water electrolysis (AEMWE) enables low‐cost green hydrogen production but remains limited by the delicate balance among ionic resistance, gas crossover, and mechanical durability in hydrocarbon‐based membranes. Although reinforced composite membra...

Imaging optimization of FIB cross sections for reliable porosity analysis of PEMFC cathode catalyst layers

Abstract Focused ion beam–scanning electron microscopy (FIB–SEM) was used to investigate the effects of acceleration voltage, beam current, and cryogenic conditions on the cross-sectional preparation of proton exchange membrane fuel cell (PEMFC) cathode catalyst layers. Milling a...

Uncertainty-Aware Adaptive Edge Blocking in Heterophilic Graph Neural Networks

Graph Neural Networks (GNNs) deliver strong performance through message passing (MP), yet they can become fragile when graphs contain many heterophilic links or when edge types are predicted incorrectly. Earlier analyses suggest that signed message propagation can reduce over-smo...

Reconfiguration of Localized Ruthenium Surface via Incorporating Single Platinum Atoms for Favorable Hydrogen Oxidation Catalysis

ABSTRACT Despite the fact that only 2% of active sites can satisfy hydrogen oxidation reaction (HOR) activity thanks to fast kinetics, the fuel cell anode is still dependent on catalysts with large amounts of platinum (Pt). Herein, a minimal‐cost ruthenium catalyst bearing ultral...