Park, Jun-Hyoung Choi, Yong-Seok Shim, Hyung Cheoul Ahn, Jae-Pyoung Lee, Jae-Chul 2024-01-19T21:02:39Z 2024-01-19T21:02:39Z 2022-01-25 2019-01 1738-8228 https://pubs.kist.re.kr/handle/201004/120493 Lack of understanding on the electrical properties of the solid electrolyte interface (SEI) has been one of the major hurdles for developing fast charging Li-ion batteries. Here, we report our preliminary experimental result on the measurement of the electrical resistivity of SEI using the direct-contact technique based on electron microscopy combined with 4-point-probe micro-electrical method. We observed that the SEI layer, which covers uniformly the surface of the graphite anode, exhibits a high resistivity (2.3 x 10(5) Omega.m) comparable to those of typical insulators. In this study, using first principles calculations performed on the computational LixF1-x (0.25 < x < 0.75) phases, we elucidate the structural origin responsible for the measured resistivity of SEI by analyzing the electronic structures. Korean KOREAN INST METALS MATERIALS Direct Measurement of Electric Resistivity of Solid Electrolyte Interface Using 4-Point-Probe Technique Article 10.3365/KJMM.2019.57.1.67 1 KOREAN JOURNAL OF METALS AND MATERIALS, v.57, no.1, pp.67 - 70 KOREAN JOURNAL OF METALS AND MATERIALS 57 1 67 70 N scie scopus kci ART002426300 000454937800009 2-s2.0-85062810021 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article ANODE MATERIALS INTERPHASE FILMS SEI Li-ion battery solid electrolyte interface resistivity 4-point-probe technique ab-initio calculation