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

Takefumi Okumura; Shin Nishimura

doi:10.1295/koron.2016-0053

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

Takefumi Okumura, Shin Nishimura

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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 language	English
Pages (from-to)	139-143
Number of pages	5
Journal	KOBUNSHI RONBUNSHU
Volume	74
Issue number	2
DOIs	https://doi.org/10.1295/koron.2016-0053
Publication status	Published - Mar 2017

All Science Journal Classification (ASJC) codes

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

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10.1295/koron.2016-0053

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title = "Effect of plasticizer addition to poly(ethylene carbonate) based polymer electrolyte",

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.",

author = "Takefumi Okumura and Shin Nishimura",

year = "2017",

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doi = "10.1295/koron.2016-0053",

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T1 - Effect of plasticizer addition to poly(ethylene carbonate) based polymer electrolyte

AU - Okumura, Takefumi

AU - Nishimura, Shin

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N2 - 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.

AB - 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.

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

Abstract

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