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Kim, Youngsik
YK Research
Research Interests
  • Ionic conducting ceramic electrolyte membranes, energy conversion and storage materials and devices

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Electrochemical properties of a ceramic-polymer-composite-solid electrolyte for Li-ion batteries

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Title
Electrochemical properties of a ceramic-polymer-composite-solid electrolyte for Li-ion batteries
Author
Lee, Seoung SooLim, Young JunKim, Hyun WooKim, Jae-KwangJung, Yeon-GilKim, Youngsik
Issue Date
2016-01
Publisher
ELSEVIER SCIENCE BV
Citation
SOLID STATE IONICS, v.284, pp.20 - 24
Abstract
This study reports on the fabrication of a ceramic-polymer-composite electrolyte with liquid electrolyte, consisting of Li1.3Ti1.7Al0.3(PO4)3 (LTAPO) ceramic powder, polytetrafluoroethylene (PTFE) polymer and 1 M LiPF6 in EC/DMC liquid electrolyte. The morphologies of the LTAPO, LTAPO-PTFE composite membrane, and LTAPO-PTFE-LiPF6-EC/DMC composite electrolyte were analyzed using a scanning electron microscopy (SEM). The effect of the liquid electrolyte on the ionic conductivity of the prepared ceramic-polymer electrolyte was investigated using electrochemical impedance spectroscopy (EIS). The room temperature ionic conductivities of the LTAPO-PTFE-LiPF6-EC/DMC composite electrolyte and the LTAPO ceramic electrolyte exhibited 2.94 × 10- 4 S/cm and 8.36 × 10- 4 S/cm, respectively. The first charge capacity of the LTAPO-PTFE-LiPF6-EC/DMC composite electrolyte cell reached 118 mAh/g at 0.06 mA/cm2 current density. The electrochemical performance of the ceramic-polymer-composite electrolyte cell was better than that of the ceramic solid electrolyte cell.
URI
https://scholarworks.unist.ac.kr/handle/201301/17995
URL
http://www.sciencedirect.com/science/article/pii/S0167273815004257
DOI
10.1016/j.ssi.2015.11.020
ISSN
0167-2738
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