NDLI: Solid polymer electrolytes based on squaric acid structure

Content Provider	Springer Nature Link
Author	Itoh, Takahito Hirai, Keita Kubo, Masataka
Copyright Year	2007
Abstract	Poly(squarate)s (PPS-1 and PPS-2) were synthesized by the reaction of squaryl dichloride with hydroquinone for PPS-1 and with 2,5-diethoxy-1,4-bis(trimethylsilyloxy)benzene for PPS-2, and the ionic conductivities, thermal properties, and electrochemical and thermal properties of their polymer electrolytes with LiN(CF$_{3}$SO$_{2}$)$_{2}$ were investigated. The ionic conductivity increased with increasing the lithium salt concentration for the PPS-1–LiN(CF$_{3}$SO$_{2}$)$_{2}$ electrolyte, and the highest ionic conductivities of 8.60 × 10$^{−5}$ S/cm at 100 °C and 9.57 × 10$^{−8}$ S/cm at 30 °C were found at the [Li] to [O] ratio of 2:1. And also, the ionic conductivity for the PPS-1–LiN(CF$_{3}$SO$_{2}$)$_{2}$ electrolyte increased with an increase in the lithium salt concentration, reached a maximum value at the [Li] to [O] ratio of 1:2, and then decreased. The highest ionic conductivity was to be 1.04 × 10$^{−5}$ S/cm at 100 °C and 1.71 × 10$^{−8}$ S/cm at 30 °C, respectively. Both polymer electrolytes exhibited relatively better electrochemical and thermal stabilities. Addition of the PPS-1 as a plasticizer into the poly(ethylene oxide) (PEO)–LiN(CF$_{3}$SO$_{2}$)$_{2}$ electrolyte system suppressed the crystallization of PEO, and improved the ionic conductivity at room temperature.
Starting Page	1
Ending Page	6
Page Count	6
File Format	PDF
ISSN	09477047
Journal	Ionics
Volume Number	14
Issue Number	1
e-ISSN	18620760
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-12-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Squaric acid structure Polymer electrolyte Ionic conductivity Electrochemical stability Thermal stability Plasticizer Electrical Power Generation and Transmission Renewable Energy Sources Condensed Matter Physical Chemistry Materials Science Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Engineering Materials Science Chemical Engineering

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