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- 저자 : 마이두엉 (검색결과 1 건)
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3차원으로 정렬된 다공성 구조의 코어- 쉘 복합체 기반 고체 전해질 제조 및 전 기화학적 특성 평가
마이두엉 순천향대학교 미래융합대학원 2023 국내석사
Three-dimensionally ordered macroporous Core-Shell Composite Solid Polymer Electrolyte for All-Solid-State Li-ion Batteries Duong Thi Phuong Mai Department of Future Convergence Technology Graduated School, Soonchunhyang University Asan-si, Chungcheonam-do, Korea (Supervised by Professor Wook Ahn) Due to their highly versatile, excellent thermal stability and high safety, composite polymer electrolytes (CPEs) have considerable advantages in the development of all-solid-state batteries (ASSBs). Solid fillers have a significant impact on the electrochemical performances of CPEs and metal-organic frameworks (MOFs) are a new class of solid fillers that have recently gained significant attention for their ability to control ion migration. In this work, we report for the first time a new type of nanostructured three-dimensional ordered porous core-shell ZIF8@ZIF67 (3DCS) holds great promise and will pave the way for secure, long-lasting energy storage systems. The integrated electrolyte PEO-LiTFSI-1% 3DCS (PL3D1CS) preserves a high Li-transference number of 0.78 at room temperature, high ionic conductivity from 1.96 × 10-4 S.cm-1 to 4.23 x 10-3 S.cm-1 in the range temperature of 25-100oC, and an excellent electrochemical stability window of 6.2 V at 60oC. Moreover, the Li symmetric cells using PL3D1CS can stably cycle under 0.2, 0.4, and 0.6 mA.cm-2 without short-circuit at 60°C demonstrated this electrolyte to reduce Li dendrite formation. Owing to these outstanding merits, the LiFePO4/PL3D1CS/Li cell displayed excellent cycling stability at both room temperature and 60oC. Key Words: Metal-organic frameworks (MOFs), three-dimensionally material (3DOM), all-solid-state batteries (ASSBs), lithium-ion batteries (LIBs), solid polymer electrolytes (SPEs), Polyethylene oxide (PEO).
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