https://scholarworks.unist.ac.kr/handle/201301/117 2026-05-13T09:46:58Z 2026-05-13T09:46:58Z Im, Junehyun Oh, Hyeseong Jeong, Kyeong-Min https://scholarworks.unist.ac.kr/handle/201301/91592 2026-04-27T02:00:49Z 2026-04-02T15:00:00Z

Title: Design Strategy of High-Energy-Density LFP Electrodes via Dry Processing Author(s): Im, Junehyun; Oh, Hyeseong; Jeong, Kyeong-Min Abstract: Thick LFP electrodes are unavoidable due to the intrinsically low capacity and density of LFP, yet conventional wet processes suffer from severe binder migration and compositional inhomogeneity. Through dry electrode processing, this study proposes design guidelines for optimized high-energy-density LiFePO₄ (LFP) cathodes for both single-crystal(SC) and polycrystalline(PC) materials by quantitatively analyzing each processing step.

2026-04-02T15:00:00Z Park, Seungho Oh, Hyeseong Kim, Yeji Jeong, Kyeong-Min https://scholarworks.unist.ac.kr/handle/201301/91591 2026-04-27T02:00:48Z 2026-04-02T15:00:00Z

Title: Equivalent-Circuit-Based Interpretation of Interfacial Polarization in Aqueous Anode Slurry Impedance Author(s): Park, Seungho; Oh, Hyeseong; Kim, Yeji; Jeong, Kyeong-Min Abstract: A unified impedance framework for both cathode and anode slurry systems is established using slurry impedance spectroscopy (SIS). The impedance response reflects interfacial polarization and conductive network formation, enabling direct correlation between slurry microstructure and electrode performance. In particular, the relaxation frequency (fₚₑₐₖ) serves as a direct descriptor of binder–particle interfacial state. This approach provides a predictive methodology for optimizing slurry formulation and electrode design.

2026-04-02T15:00:00Z Kim, Sung-Tae Jeon, Byeong-Jin Jeong, Kyeong-Min https://scholarworks.unist.ac.kr/handle/201301/91590 2026-04-27T02:00:46Z 2026-04-02T15:00:00Z

Title: Durable High-Silicon-Content Anodes via Rheology-Guided Design of Polymer binder-Particle Networks Author(s): Kim, Sung-Tae; Jeon, Byeong-Jin; Jeong, Kyeong-Min Abstract: As silicon content increases, electrical connectivity within the electrode becomes increasingly dependent on the structural stability of the carbon–binder domain (CBD). The viscoelastic CBD network exhibits incomplete elastic recovery during cycling, leading to interfacial gaps with silicon and the disruption of electrical pathways. These polymer-particle network originate during slurry process and are reflected in rheological responses. In this study, a new approach that correlates slurry viscoelasticity with cell performance to provide insights for improving the structural stability of high-silicon content anodes.

2026-04-02T15:00:00Z Kim, Minsol Kim, Gyu-Sang Lee, Si-Heon Oh, Hyeseong Jeon, Byeong-Jin Jeong, Kyeong-Min https://scholarworks.unist.ac.kr/handle/201301/91589 2026-04-27T02:00:45Z 2026-04-02T15:00:00Z

Title: Effect of Conductive Additive Morphology on Pore Evolution and AM-SE Interfacial Contact in Sulfide-Based ASSB Cathodes Author(s): Kim, Minsol; Kim, Gyu-Sang; Lee, Si-Heon; Oh, Hyeseong; Jeon, Byeong-Jin; Jeong, Kyeong-Min Abstract: All-solid-state batteries (ASSBs) offer high energy density and improved safety by utilizing lithium metal anodes and non-flammable solid electrolytes. In ASSBs, ion transport occurs through solid–solid interfaces. Thus, the electrode microstructure, governed by the properties of its components, is critical to electrochemical performance. In this study, ASSB cathodes incorporating onedimensional (1D) conductive additives (CAs) were fabricated and analyzed. The additives were categorized by their length and compaction characteristics into low aspect ratio (L-AR) and high aspect ratio (H-AR). Their effects on cathode densification, active material (AM)– solid electrolyte (SE) interfacial contact, and ionic– electronic transport were systematically investigated. Based on these results, morphology-driven design strategies for improving the cycling stability of ASSB cathodes are proposed.

2026-04-02T15:00:00Z