Publications

Showing 12 results for Author: Chanho Kim

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Sep, 2026

Journal

Cation-Diffusive Carbon Interlayers Stabilize Na Metal and Double the Current in Na-S Redox-Flow Batteries for Grid-Scale Energy Storage

The sodium-sulfur nonaqueous redox-flow batteries (Na-S NARFBs) using earth-abundant elements are highly attractive due to the low material cost and improved energy density for grid-scale energy storage. However, the low current performance, poor Na0/Na+ redox kinetics, and Na dendrite growth pose severe challenges. We introduce cation-diffusive layers (CDLs): thin and Na+…
Sep, 2026

Journal

Self-generated phosphate/oxysulfide passivation from dry-processed single-crystal NMC811 stabilizes argyrodite sulfide solid-state battery interfaces

Pushing sulfide all solid-state batteries (SSBs) beyond 500 Wh kg⁻¹ requires high voltage, high loading layered cathodes without accelerating sulfide electrolyte decomposition or losing interfacial contact. Polycrystalline NMC811 commonly fails under these conditions due to grain-boundary oxygen release, chemo-mechanical cracking, and growth of resistive cathode–electrolyt…
Sep, 2026

Journal

Unravelling electro-chemo-mechanical interplay in layered oxide cathode degradation in solid-state batteries

Solid-state batteries (SSBs) hold notable promise for advancing energy storage technologies. However, their commercial viability is limited by the poor cycle stability and complex degradation mechanism. This study underscores the pivotal role of electro-chemo-mechanical interactions in driving the failure of SSBs. Leveraging advanced x-ray imaging and spectroscopy techniqu…
Aug, 2026

Journal

Operando neutron radiography validates a parameter-free transport–kinetics model for thick solid-state battery cathodes

Tortuosity-weighted interfacial flux for lithium (TWIF-Li) predicts through-thickness Li gradients in thick composite all-solid-state cathodes without fitted parameters. Image-derived microstructures, GITT-derived concentration-dependent solid diffusion, and tortuosity-weighted interfacial kinetics reproduce operando neutron radiography across practical rates, delivering t…
Aug, 2026

Journal

Electrode Modification by Laser Ablation to Overcome Mechanical and Scalability Limitations of Solid-State Prealkylation of Electrode Architectures

In this work, laser ablation of Si electrode surfaces is utilized to provide localized strain relief during the Solid State Prealkylation of Electrode Architectures (SPEAR) process, in addition to volumetric expansion relief in the form of free volume channels across the electrode. A hexagonal mesh patterning was employed via laser ablation, where the hexagonal diameter (p…
Jun, 2026

Journal

Binder-Stabilized Carbon Fiber Hosts for High-Utilization Sodium–Polysulfide Flow Catholytes

Sodium-sulfur (Na-S) batteries hold promise as high-energy-density batteries for long-duration energy storage due to their high open circuit voltage and Earth-abundant active materials. However, low utilization of the sulfur active material limits the achievable specific capacity, especially when a liquid polysulfide catholyte is utilized. High-surface-area carbon material…
Apr, 2026

Journal

Self-Healing Lithium Dendrites through Spontaneous Passivating Layer Formation for Stable Solid-State Lithium–Metal Batteries

All-solid-state lithium–metal batteries have attracted significant attention, owing to their high energy density and superior safety. However, lithium–metal penetration through the solid electrolyte, leading to short-circuiting, remains a critical failure mode that demands comprehensive mitigation strategies. Most existing strategies are effective only prior to the initiat…
Sep, 2025

Journal

Pushing the Limits: Maximizing Energy Density in Silicon Sulfide Solid-State Batteries

For the first time, we demonstrate a silicon solid-state battery (SSB) architecture that achieves >400 Wh kg−1, approaching the theoretical limit for silicon-based SSBs. This configuration features a 99.9 wt% micro-Si, a thin sulfide solid electrolyte (SSE), and a high-loading NMC811. Key to these results is strategically selecting and evaluating the processing techniques,…
Sep, 2025

Journal

Promising performance of sulfide catholytes compared to halide alternatives in NMC811 cathodes for sheet-type sulfide solid-state batteries

Sulfide-based solid-state batteries (SSBs) show promise in achieving energy densities over 350 Wh/kg, yet challenges persist with their incorporation of high-voltage, nickel-rich layered oxide cathodes, such as LiNi₀. ₈Mn₀.₁Co₀.₁O₂ (NMC811), due to the poor oxidation stability of sulfide solid-state electrolytes (SSEs) like Li₆PS₅Cl (LPSCl). Although halide SSEs such as Li…
May, 2025

Journal

Effects of catholyte aging on high-nickel NMC cathodes in sulfide all-solid-state batteries

Sulfide solid-state electrolytes (SSEs) in all-solid-state batteries (SSBs) are recognized for their high ionic conductivity and inherent safety. The LiNi0.8Mn0.1Co0.1O2 (NMC811) cathode offers a high thermodynamic potential of approximately 3.8 V vs. Li/Li+ and a theoretical specific capacity of 200 mA h g−1. However, the practical utilization of NMC811 in sulfide SSBs fa…
May, 2025

Journal

Tailoring Binder Molecular Weight to Enhance Slurry-Cast NMC Cathodes for Sulfide Solid-State Batteries

We demonstrate for the first time the critical influence of binder molecular weight on the performance of slurry-cast lithium nickel manganese cobalt oxide (NMC) cathodes in sulfide-based all-solid-state batteries (SSBs). SSBs are increasingly recognized as a safer and potentially more efficient alternative to traditional Li-ion batteries, owing to the superior ionic condu…
May, 2025

Journal

Binder Effects on Processing, Mechanical Properties, and Performance of Thin Sulfide Solid-State Electrolytes

All-solid-state batteries (ASSBs) offer enhanced safety and energy density compared to conventional lithium-ion batteries by replacing flammable liquid electrolytes with solid-state electrolytes (SSEs). Among SSEs, sulfide-based electrolytes exhibit high ionic conductivity and mechanical deformability, making them promising candidates for next-generation energy storage. Ho…

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Publications

Cation-Diffusive Carbon Interlayers Stabilize Na Metal and Double the Current in Na-S Redox-Flow Batteries for Grid-Scale Energy Storage

Self-generated phosphate/oxysulfide passivation from dry-processed single-crystal NMC811 stabilizes argyrodite sulfide solid-state battery interfaces

Unravelling electro-chemo-mechanical interplay in layered oxide cathode degradation in solid-state batteries

Operando neutron radiography validates a parameter-free transport–kinetics model for thick solid-state battery cathodes

Electrode Modification by Laser Ablation to Overcome Mechanical and Scalability Limitations of Solid-State Prealkylation of Electrode Architectures

Binder-Stabilized Carbon Fiber Hosts for High-Utilization Sodium–Polysulfide Flow Catholytes

Self-Healing Lithium Dendrites through Spontaneous Passivating Layer Formation for Stable Solid-State Lithium–Metal Batteries

Pushing the Limits: Maximizing Energy Density in Silicon Sulfide Solid-State Batteries

Promising performance of sulfide catholytes compared to halide alternatives in NMC811 cathodes for sheet-type sulfide solid-state batteries

Effects of catholyte aging on high-nickel NMC cathodes in sulfide all-solid-state batteries

Tailoring Binder Molecular Weight to Enhance Slurry-Cast NMC Cathodes for Sulfide Solid-State Batteries

Binder Effects on Processing, Mechanical Properties, and Performance of Thin Sulfide Solid-State Electrolytes