A‐Yeon Kim

ORCID: 0009-0000-1957-5347
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About
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Research Areas
  • Advanced Battery Materials and Technologies
  • Advancements in Battery Materials
  • Advanced Battery Technologies Research
  • Supercapacitor Materials and Fabrication
  • Extraction and Separation Processes
  • Advanced battery technologies research
  • Semiconductor materials and devices
  • Polyoxometalates: Synthesis and Applications
  • Magnetic Properties and Synthesis of Ferrites
  • Chemical Synthesis and Characterization

Korea Institute of Science and Technology
2023-2025

Korea University
2023

Abstract Sulfide‐based all‐solid‐state batteries (ASSBs) are next‐generation batteries, which resolve the safety issues of energy storage systems. Elaborated intimate contact by providing constant external pressure using a customized cell is way to overcome chemo‐mechanical deterioration associated with interfacial issues; however, it not practical approach. Here, ASSBs evaluated adopting typical coin‐type at low (≈0.3 MPa) and confirmed that cathode more significant factor in lowering...

10.1002/aenm.202301220 article EN Advanced Energy Materials 2023-08-17

Abstract This study explores the impact of introducing vacancy in transition metal layer rationally designed Na 0.6 [Ni 0.3 Ru Mn 0.4 ]O 2 (NRM) cathode material. The incorporation Ru, Ni, and enhances structural stability during extensive cycling, increases operation voltage, induces a capacity increase while also activating oxygen redox, respectively, 0.7 0.2 V Ni0.1 (V-NRM) compound. Various analytical techniques including transmission electron microscopy, X-ray absorption near edge...

10.1007/s40820-024-01439-9 article EN cc-by Nano-Micro Letters 2024-07-08

Cu doping enhances the P3-Na 0.62 Mn 0.75 0.19 O 2 cathode's performance in sodium-ion batteries. It improves electrochemical properties, structural stability, and battery performance, making it a promising material for energy storage applications.

10.1039/d4ta07432g article EN Journal of Materials Chemistry A 2025-01-01

The introduction of the Li 6 PS 5 Cl solid electrolyte coating layer forms a better + ionic pathway within composite cathode. This enables high discharge capacity and long cycle life with intimate interfacial contact.

10.1039/d3ta03283c article EN Journal of Materials Chemistry A 2023-01-01

Abstract Understanding the oxygen‐redox reactions within Mn‐rich layered cathode materials is an important strategy to improve capacity of sodium‐ion batteries (SIBs) while satisfying demand for low cost and use abundant resources. Nonetheless, P2‐type Na y [A x Mn 1‐x ]O 2 compositions (where A = electro‐inactive elements) exhibit poor retention operation voltage along with a broad hysteresis. In addition, [TM TM transition metal) still suffers from in absence anion redox activity. This...

10.1002/aenm.202405112 article EN Advanced Energy Materials 2024-11-28

Lithium-ion batteries have been used as energy sources not only for small electronic devices but also high-capacity and high-energy-density applications such electric vehicles. However, the use of flammable organic liquid electrolytes in lithium-ion has raised safety concerns various applications. Therefore, solid-state using flame-retardant inorganic materials are considered a more reasonable direction future due to their high density. Solid electrolytes(SEs) divided into oxide-based,...

10.1149/ma2023-024745mtgabs article EN Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) 2023-12-22

Sulfide All-Solid-State Batteries In article number 2301220, Seung-Taek Myung, Hun-Gi Jung and co-workers present an investigation of the acceleration causes NCM cathode deterioration in sulfide all-solid-state batteries under low-pressure conditions. The one by-product Li6PS5Cl is sulfur/sulfide, which infused into grain boundary cathode, resulting a Li deficiency, affects active materials phase transformation.

10.1002/aenm.202370162 article EN Advanced Energy Materials 2023-10-01
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