Direct measurement of electric resistivity of solid electrolyte interface using 4-point-probe technique

Jun Hyoung Park, Yong Seok Choi, Hyung Cheoul Shim, Jae Pyoung Ahn, Jae-chul Lee

Research output: Contribution to journalArticle

Abstract

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 × 10 5 Ω·m) comparable to those of typical insulators. In this study, using first principles calculations performed on the computational Li x F 1-x (0.25 < x < 0.75) phases, we elucidate the structural origin responsible for the measured resistivity of SEI by analyzing the electronic structures.

Original languageEnglish
Pages (from-to)67-70
Number of pages4
JournalJournal of Korean Institute of Metals and Materials
Volume57
Issue number1
DOIs
Publication statusPublished - 2019 Jan 1

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Electric conductivity
Solid electrolytes
Resistivity
Electrolyte
Probe
Electrical Resistivity
First-principles Calculation
Graphite
Insulator
Electron Microscopy
Electrical Properties
Electronic Structure
Battery
Electron microscopy
Electronic structure
Anodes
Electric properties
Cover
Contact
Experimental Results

Keywords

  • 4-point-probe technique
  • Ab-initio calculation
  • Li-ion battery
  • Resistivity
  • Solid electrolyte interface

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Modelling and Simulation
  • Surfaces, Coatings and Films
  • Metals and Alloys

Cite this

Direct measurement of electric resistivity of solid electrolyte interface using 4-point-probe technique. / Park, Jun Hyoung; Choi, Yong Seok; Shim, Hyung Cheoul; Ahn, Jae Pyoung; Lee, Jae-chul.

In: Journal of Korean Institute of Metals and Materials, Vol. 57, No. 1, 01.01.2019, p. 67-70.

Research output: Contribution to journalArticle

Park, Jun Hyoung ; Choi, Yong Seok ; Shim, Hyung Cheoul ; Ahn, Jae Pyoung ; Lee, Jae-chul. / Direct measurement of electric resistivity of solid electrolyte interface using 4-point-probe technique. In: Journal of Korean Institute of Metals and Materials. 2019 ; Vol. 57, No. 1. pp. 67-70.
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