Effect of plasticizer addition to poly(ethylene carbonate) based polymer electrolyte

Takefumi Okumura, Shin Nishimura

Research output: Contribution to journalArticle

Abstract

Properties of polymer solid electrolytes composed of poly(ethylene carbonate) [PEC], lithium bis(trifluoromethane sulfonimide) [LiTFSI, LiN(CF3SO2)2] and propylene carbonate [PC] as plasticizer have been analyzed using Raman spectroscopy and ac impedance spectroscopy. Including 14 wt% of PC in the PEC based polymer electrolyte with LiTFSI concentration of 0.2 mol per polymer repeat unit, made it possible to increase the ionic conductivity (σ) by one order of magnitude to a practical-use level of 1.3mScm-1 at 20°C. The correlation between • and temperature fits well the Williams-Landel-Ferry equation, so it is considered that ionic conductivity depends on thermal activation of the polymer chains. From the correlation between • and temperature, it is concluded that PC (with greater mobility than the polymer chains) partly solvates with lithium ions, and • is improved by lowering its activation energy.

Original languageEnglish
Pages (from-to)139-143
Number of pages5
JournalKobunshi Ronbunshu
Volume74
Issue number2
DOIs
Publication statusPublished - Mar 1 2017

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Plasticizers
electrolyte
Electrolytes
ethylene
Carbonates
Polymers
Ethylene
polymer
carbonate
Propylene
Ionic conductivity
lithium
Lithium
conductivity
Solid electrolytes
Raman spectroscopy
activation energy
Activation energy
temperature
Chemical activation

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Materials Science (miscellaneous)
  • Environmental Science(all)
  • Polymers and Plastics

Cite this

Effect of plasticizer addition to poly(ethylene carbonate) based polymer electrolyte. / Okumura, Takefumi; Nishimura, Shin.

In: Kobunshi Ronbunshu, Vol. 74, No. 2, 01.03.2017, p. 139-143.

Research output: Contribution to journalArticle

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