[LECTURE] SPECIAL LECTURE(May.07 Thu. 16:00) (Hongseok Jo, Jeonbuk National University)
- SAINT
- Hit629
- 2026-04-30
05/07 (목) 전문가초청특강은 전북대학교 기계공학과 조홍석 교수님을 모시고 진행합니다.
관심있는 분들의 많은 참석 부탁드립니다.
ㅁ주제: High-Capacity Thin-Film All-Solid-State Micro-Batteries Based on EHD-Sputtering Hybrid Process
ㅁ일시: 05/07 (목) 16:00
ㅁ장소: 제2종합연구동 83188호
ㅁ약력:
핵심 연구 분야
차세대 에너지 저장: 리튬 이온 배터리(LIB) 성능 향상 및 2D 소재(MXene) 응용
첨단 제조 공정: 전기수력학 기반 올인원(All-in-one) 배터리 연속 코팅 공정 개발
융합 기술: 에너지 하베스팅, 다기능 유연 센서(Flexible sensors), 투명 전극(TCEs) 및 열전달 제어 기술
주요 학력 및 경력
학력
* Doctor of Philosophy in Mechanical Engineering,4.08/4.5, (Sept. 2016 ~ Feb. 2020)
Korea University, Seoul, Korea / Advisor: Prof. Sam S. Yoon
* Master of Engineering in Mechanical Engineering, 4.33/4.5, (Mar. 2014 ~ Aug. 2016)
Korea University, Seoul, Korea / Advisor: Prof. Sam S. Yoon
* Bachelor of Science in Electrophysics, 4.07/4.5, (Mar. 2006 ~ Feb. 2014)
Kwangwoon University, Seoul, Korea
경력
- * Senior Researcher (National NanoFab Center (NNFC), Nano Convergence Technology Development, Dec.2024 to Aug.2025
- * Research Professor (SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University), July 2023 to Nov. 2024
- * Postdoctoral Research Fellow (Advisor : Prof. Seongpil An, Sungkyunkwan University), Jan. 2023 to June 2023
- * Postdoctoral Research Fellow (Advisor : Prof. Simon Park, University of Calgary), Mar. 2021 to Dec. 2022
- * Postdoctoral Research Fellow (Advisor : Prof. Seongpil An, Sungkyunkwan University), Mar. 2020 to Mar. 2021
ㅁ초록:
Thin-film all-solid-state batteries offer high stability, yet their areal capacity is fundamentally limited by electrode thickness constraints. This study proposes a novel hybrid architecture that integrates a sputtered silicon thin-film anode with a micro-scale thick-film cathode deposited via an electrohydrodynamic (EHD) electrostatic spray (E-spray) process. A significant challenge in such systems is that micro-sized cathode particles can induce severe localized stress on ultra-thin, brittle LiPON electrolytes, leading to mechanical fracture and short circuits. To address this, we engineered an EHD-sprayed polymer-ceramic composite solid electrolyte (CSE) interlayer to serve as a mechanical buffer. This CSE layer effectively dissipates concentrated stress, preserves the integrity of the LiPON, and enhances interfacial adhesion to reduce charge-transfer resistance. Scanning electron microscopy (SEM) confirmed that the ~1 μm-thick CSE layer successfully isolates the LiPON from the cathode active materials. The resulting full cell achieved an initial capacity of approximately 17 μAh at 0.05 C and demonstrated stable cycling performance over 100 cycles at 1 C without degradation. These findings highlight the potential of E-spray processes for versatile multi-material stacking and high-resolution integration in thin-film battery technologies.
Keywords : Electrostatic spray, Polymer-ceramic composite solid electrolyte, Thin-film solid-state battery