Juyeon Han

Study on the Interfacial Behavior of W CMP on SiGe Film for Disruptive Semiconductor Devices

Jeehwan Heo, Juyeon Han, SangWon BYUN, Seokjun Hong et autres

For over 40 years, semiconductor design rule has been continuously shrunk, but the industry has reached a point where further miniaturization is challenging. As a result, simply scaling down is no longer sufficient for developing new products, and the focus has shifted …

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Residual‐Lithium‐to‐LiF Conversion Enables a LiF–Fluorinated Carbon Interphase for Reconstruction‐Resistant Ni‐Rich Cathodes

Pangyu Kim, Juyeon Han, Junhyeok Kim, Young‐Hoon Kim et autres

ABSTRACT High nickel layered oxide cathodes offer high energy density but suffer from rapid degradation caused by residual lithium and surface reconstruction into electrochemically inactive NiO rock‐salt phases. Here, we introduce a monomer‐derived fluorine surface engineering route for Li[Ni 0.90 Co 0.05 …

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Breaking SEI-CEI feedback loops by separator-driven interphase engineering in high-voltage Li metal batteries

Juyeon Han, Subeen Park, Eunha Seo, Junyeong Lee et autres

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Anion-dominant coordinated weakly solvating ether electrolyte for silicon anodes

Dain Kim, Juyeon Han, Subeen Park, Hyunjin Kim et autres

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Optimizing the Imidazolium Cation Alkyl Chain Length in Water‐in‐Ionic Liquid Electrolytes for Enhanced Interfacial Stability in Aqueous Zinc‐Ion Batteries

E. S. Seo, Juyeon Han, Jeeyoung Yoo

Abstract Aqueous Zn‐ion batteries (AZIBs) show promise for large‐scale energy‐storage applications due to Zn being Earth‐abundant and their stability. Nevertheless, the translational viability of these systems is curtailed by nonuniform Zn electrodeposition, particularly dendritic growth, and by multiple parasitic reactions occurring at …

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Aligned Nanostructures Resolve Zn 2+ Transport Bottlenecks via Interfacial Kinetics–Diffusion Coupling in Aqueous Zinc‐Ion Batteries

Juyeon Han, E. S. Seo, Subeen Park, Se Hun Lee et autres

Abstract Aqueous zinc‐ion batteries (AZIBs) have garnered significant attention as a safe and cost‐effective alternative to lithium‐ion batteries for grid‐scale energy storage. However, their performance is hindered by sluggish Zn 2+ diffusion within the cathode and structural degradation. While pre‐intercalation strategies have …

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Ultrasonic synthesis of conducting polymers intercalated potassium vanadate nanofiber composites as cathode for aqueous zinc-ion batteries

Juyeon Han, Yongyeol Park, Ok Sung Jeon, Dongpyo Hong et autres

Aqueous zinc-ion batteries (AZIBs) have gained attention as next-generation energy storage systems due to their safety, cost-effectiveness, and eco-friendliness. However, their commercialization is hindered by the structural instability and low electrochemical performance of cathode materials. Herein, we present poly(3,4-ethylenedioxythiophene) (PEDOT)-intercalated potassium vanadate …

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Anisotropic Ion‐Guiding Hydrogel Electrolyte with High‐Water Affinity for Zn Ion Battery

Juyeon Han, Sung Won Jung, Sungeun Heo, Bumgyu Choi et autres

Abstract Aqueous zinc‐ion batteries (AZIBs) are a promising alternative to lithium‐ion batteries, boasting superior safety, eco‐friendliness, and cost‐effectiveness. Despite these advantages, performance issues such as irregular Zn deposition and cathode material dissolution remain challenging. This study introduces an intrinsically anisotropic ion‐guiding hydrogel …

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Uniformization of Electron Distribution at Grain Boundaries via Work Function Adjusting Interlayer to Prevent Li‐Filament Formation Within Solid Electrolytes

Jeewon Lee, Heebae Kim, Young Pyo Jeon, Huding Jin et autres

Abstract With the increasing demand for safe all‐solid‐state lithium metal batteries (ASSLMBs), preventing Li‐filament formation has become a critical issue in inorganic solid‐electrolytes (ISEs). Fundamentally, uniformizing electronic properties at the microstructure is key to preventing the reduction of Li‐ions, which strongly induces …

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Anion-Rich Interface via a Self-Assembled Monolayer toward a Long-Lifespan Li Metal Battery

Byeongyun Min, Seonmi Pyo, Juyeon Han, Huding Jin et autres

Due to the extremely high energy density of Li metal, Li metal batteries are regarded as one of the most promising candidates for next-generation energy storage systems. However, interfacial issues, particularly the unstable solid electrolyte interphase (SEI) and lithium dendritic growth, hinder …

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Voltage Noise Failure Induced by Li Dendritic Micro‐Penetration in All‐Solid‐State Li‐Metal Battery with Composite Solid Electrolyte

Heejun Yun, Eunji J. Lee, Juyeon Han, Eunbin Jang et autres

Abstract All‐solid‐state Li‐metal batteries (ASSLBs) are the most attractive next‐generation batteries due to intrinsic safety and high energy density. Particularly, composite solid electrolyte (CSE)‐based ASSLBs, highly compatible with conventional Li‐ion batteries, are nearing commercialization. However, the understanding of ASSLBs’ failure remains deficient, …

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Strategic Atomic Interaction Modification for Highly Durable Inorganic Solid Electrolytes in Advanced All‐Solid‐State Li‐Metal Batteries

Heebae Kim, Eunbin Jang, Jinil Cho, Seonmi Pyo et autres

All‐solid‐state Li‐metal battery (ASSLB) represents advantageous energy storage system for automotive applications. For ASSLB, inorganic solid electrolyte is essential in determining safety and cycling performance. However, significant challenges persist in practical construction of ASSLB with optimized electrolyte. Specifically, electrolyte's structural instability influencing …

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