Won Il Kim

Modulating Chemical State of Cation Site for Fast and Reversible Na Ion Storage of Fluorophosphate Cathodes

Minjun Hwang, Juncheol Hwang, Gun Jang, Won Il Kim et autres

An ionic bond by modulating chemical states is proposed to facilitate the Na + diffusion kinetics of fluorophosphate cathodes for high-power-density sodium-ion batteries. Herein, the model of Na 3–2 x V 2– x Mo x (PO 4 ) 2 O 2 F …

kr, by (code pays fourni par la source)

Molecularly dispersed polyoxometalate clusters via polymeric ionic liquid for flexible zinc–air batteries

Hongdae Lee, Yoonbin Kim, Won Il Kim, Gun Jang et autres

kr, jp (code pays fourni par la source)

Two-dimensional polymeric metal phthalocyanines with anion fluxing and Li-ion-conducting properties for lithium metal full batteries

Jun Su Kim, Yoonbin Kim, Sang Ha Baek, Yonggoon Jeon et autres

Herein, we report the molecular engineering of anion-fluxing polymeric metal phthalocyanines (MTPs) by controlling the types of metal centers and incorporating lithiophilic linkers to achieve ultrastable Li metal batteries. Spectroscopic characterization, cryogenic transmission electron microscopy, and computational simulations demonstrate that the Co–N …

kr, jp (code pays fourni par la source)

Eutectic Transition and Interfacial Modulation of Multifunctional Ionic Liquid Additives for Subzero‐Temperature Lithium‐Ion Batteries

Jun Su Kim, Uddhav Kulkarni, Jeong Hee Park, Won‐Jang Cho et autres

Abstract Commercial lithium‐ion batteries (LIBs) suffer substantial performance degradation at subzero temperatures due to the increased viscosity of ethylene carbonate (EC)‐based electrolytes and a high energy barrier for lithium‐ion (Li⁺) desolvation at the graphite anode interface, posing critical challenges for applications in …

kr (code pays fourni par la source)

Redox‐Mediating Mo 2 C Nanoparticles Confined Within Nitrogen‐ and Phosphorus‐Codoped Amorphous Carbon Matrix for Lithium–Sulfur Batteries

Won Il Kim, Min Ju Kim, Hyunyoung Park, Minjun Hwang et autres

Lithium–sulfur batteries (LSBs) suffer from sluggish lithium polysulfides (LiPS) conversion and severe interfacial instability, which limit their rate performance and cycle life. Herein, we report a multifunctional interlayer comprising Mo 2 C nanoparticles confined within a nitrogen‐ and phosphorus‐codoped amorphous carbon matrix …

kr (code pays fourni par la source)

Stereoisomerism of multi-functional electrolyte additives for initially anodeless aqueous zinc metal batteries

Shengyang Huang, Hao Fu, Hyun Min Kwon, Min Sung Kim et autres

Stereoisomerism, arising from the distinctive spatial arrangements of atoms despite identical molecular formulae, often displays different chemical reactivities. Herein, we demonstrate how geometric isomerism of multifunctional electrolyte additives affects aqueous zinc metal batteries. Inspired by natural bacteria, we compared trans-butenedioic acid (fumaric …

kr, cn, es (code pays fourni par la source)

Ag‐Embedded Carbon Nanotube Bucky Papers for Lithium Metal Full Batteries

Jun Su Kim, Chanmin Park, Dong Hyun Min, Taehun Kang et autres

Lithium (Li) metal anodes have received significant attention owing to their high theoretical capacity and low redox potential. Herein, a 3D bucky paper‐based host is demonstrated, consisting of multi‐walled carbon nanotubes (MWCNT) and Ag nanoparticles, for the uniform and dense Li deposition. …

kr (code pays fourni par la source)

Removal of Metal Ions in Spin-on Hardmask Using Functionalized Porous Silica Adsorbents

Won Il Kim, Kiseok Lee, Hyo-Sik Kim, Mingi Choi et autres

The ongoing miniaturization of semiconductor devices necessitates continuous advancements in lithographic processes, which are critical for high-precision circuit formation. To prevent substrate damage during the etching step, a spin-on hardmask (SOH) layer is often introduced between the photoresist (PR) and the substrate. …

kr (code pays fourni par la source)

High-Voltage Lithium Batteries Enabled by Facile In Situ Fabrication of Monophasic Cellulose-Based Single-Ion Conductors

Seonghan Yu, Hyeyun Kim, Jaeho Shin, Junsu Kim et autres

The growing demand for high-energy-density, safe, and sustainable lithium-ion batteries (LIBs) necessitates the development of innovative electrolytes. Herein, we present a facile in situ preparation strategy for fabricating a high-performance single-ion conductor (SC). This SC is based on hydroxypropyl cellulose (HPC) integrated …

in, kr, us, pl, ca (code pays fourni par la source)

Ionic Structured Redox-Mediating Polymeric Sulfurs for Lithium–Sulfur Batteries

Won Il Kim, Jong Chan Shin, Min Ju Kim, Gun Jang et autres

Polymeric sulfur demonstrates immense capabilities as a promising active material for lithium–sulfur batteries (LSBs) owing to their ability to capture lithium polysulfides (LiPS) through the formation of covalent bonds. Herein, we demonstrate an ionic structured polymeric sulfur (IP-S) as a redox mediating …

kr, by (code pays fourni par la source)

Polyoxometalate Initiated In situ Conformal Coating of Multifunctional Hybrid Artificial Layers for High Performance Zinc Metal Anodes (Adv. Funct. Mater. 10/2025)

Jin Suk Byun, Won Il Kim, Sang Ha Baek, Hao Fu et autres

Zinc Metal Anodes In article number 2412577, Ho Seok Park and co-workers present a multifunctional organic/inorganic composite coating layer where polyoxometalate acts both as a Lewis acid initiator for 1,3-dioxolane (DOL) polymerization and a chemical-bridge between the Zn metal anode and ion-conductive …

kr, cn (code pays fourni par la source)

Hierarchically Structured Conductive Lanthanide Metal Organic Framework Nanorods for Ultrastable Flexible Magnesium Ion Capacitors

Hye Rin Park, Gun Jang, Jin Suk Byun, Yeonju Park et autres

Abstract Aqueous multivalent metal ion capacitors are very attractive owing to their high capacitance, low cost, environmental benignity, and safety. Herein, hierarchically structured, conductive lanthanide metal‐organic frameworks (MOFs) assembled by nanorods for ultrastable flexible magnesium ion capacitors (MICs) is designed. Three MOFs, …

kr (code pays fourni par la source)