Journal
ELECTROCHIMICA ACTA
Volume 218, Issue -, Pages 271-277Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.09.141
Keywords
Hybrid solid electrolyte; Solid-state lithium cell; Ceramic electrolyte; Polymer electrolyte; Room temperature operation
Categories
Funding
- Korea Electrotechnology Research Institute (KERI) Primary Research Program through Korea Research Council for Industrial Science Technology [16-12-N0101-16]
- Basic Science Research Program of the National Research Foundation of Korea (NRF)
- Ministry of Science, ICT and Future Planning [2014R1A2A2A01002154]
- Korea Evaluation Institute of Industrial Technology (KEIT) [16-12-N0101-16] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Organic-inorganic hybrid solid electrolytes composed of Li+-conducting lithium aluminum germanium phosphate (LAGP), poly(ethylene oxide) (PEO), lithium perchlorate and succinonitrile (SN) were prepared in the form of flexible thin film, and their electrochemical properties were investigated. The hybrid solid electrolytes showed high ionic conductivities ranging from 3.0 x 10(-5) to 1.1 x 10(-4) S cm(-1) at room temperature and exhibited good electrochemical stability. A solid-state Li/LiFePO4 cell assembled with hybrid solid electrolyte composed of 70 wt.% LAGP, 21 wt.% PEO-LiClO4 and 9 wt.% SN delivered a high discharge capacity and exhibited good capacity retention at ambient temperature. Good cycling performance of the cell resulted from the high ionic conductivity of the solid electrolyte and its good interfacial contacts with electrodes. (C) 2016 Elsevier Ltd. All rights reserved.
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