Correlation between the segmental motion and ionic conductivity of poly(ether urethane)-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">LiClO</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>complex studied by positron spectroscopy

Wang, B.; Li, S. Q.; Wang, S. J.

doi:10.1103/physrevb.56.11503

Cited by 37 publications

(19 citation statements)

References 26 publications

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“…In particular, VTF behaviours of viscosity and conductivity have been reported for ionic liquids [35]. Empirically, the VTF parameters can be obtained by fitting the conductivity data in terms of the linearized relationship [36]…”

Section: Thermal Properties Morphology and Ionic Conductivitymentioning

confidence: 99%

Lithium ion conducting PVdF-HFP composite gel electrolytes based on N-methoxyethyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)-imide ionic liquid

Ferrari

Quartarone

Mustarelli

et al. 2010

Journal of Power Sources

225

136

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Blends of PVdF-HFP and ionic liquids (ILs) are interesting for application as electrolytes in plastic Li batteries. They combine the advantages of the gel polymer electrolytes (GPEs) swollen by conventional organic liquid electrolytes with the nonflammability, and high thermal and electrochemical stability of ILs. In this work we prepared and characterized PVdF-HFP composite membranes swollen with a solution of LiTFSI in ether-functionalized pyrrolidinium-imide ionic liquid (PYRA 12O1 TFSI). The membranes were filled in with two different types of silica: (i) mesoporous SiO 2 (SBA-15) and (ii) a commercial nano-size one (HiSil TM T700). The ionic conductivity and the electrochemical properties of the gel electrolytes were studied in terms of the nature of the filler. The thermal and the transport properties of the composite membranes are similar. In particular, room temperature ionic conductivities higher than 0.25 mS cm −1 are easily obtained at defined filler contents. However, the mesoporous filler guarantees higher lithium transference numbers, a more stable electrochemical interface and better cycling performances. Contrary to the HiSil TM-based membrane, the Li/LiFePO 4 cells with PVdF-HFP/PYRA 12O1 TFSI-LiTFSI films containing 10 wt% of SBA-15 show good charge/discharge capacity, columbic efficiency close to unity, and low capacity losses at medium Crates during 180 cycles.

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Section: Thermal Properties Morphology and Ionic Conductivitymentioning

confidence: 99%

Lithium ion conducting PVdF-HFP composite gel electrolytes based on N-methoxyethyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)-imide ionic liquid

Ferrari

Quartarone

Mustarelli

et al. 2010

Journal of Power Sources

225

136

View full text Add to dashboard Cite

show abstract

“…It is well known that ion transport in polymer electrolytes is very much coupled to the polymer chain and segmental motions. Neutron scattering, nuclear magnetic resonance (NMR), X-ray diffraction (XRD) and computer simulation studies carried out recently [9][10][11][12][13][14] revealed such a correlation between ion transport and segmental relaxation. Hence, it becomes important to understand the segmental relaxation process to gain more insights towards the understanding of ion transport process.…”

Section: Introductionmentioning

confidence: 97%

Segmental relaxation and ion transport in polymer electrolyte films by dielectric spectroscopy

Natesan

Karan

Rivera

et al. 2006

Journal of Non-Crystalline Solids

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“…Recently, there is a great attention for the study of ion transport in these polymer electrolytes. Ion transport in these polymer electrolytes is not only controlled by ionic motion, but also coupled with segmental motion of host polymers [14]. A study of ion transport mechanism in polymer electrolytes is a great challenge from scientific viewpoint due to the intrinsic complexity of coupled motion.…”

Section: Introductionmentioning

confidence: 99%

Effect of plasticizers on ionic conductivity and dielectric relaxation of PEO-LiClO4 polymer electrolyte

Das

Ghosh

2015

Electrochimica Acta

156

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Correlation between the segmental motion and ionic conductivity of poly(ether urethane)-LiClO4complex studied by positron spectroscopy

Cited by 37 publications

References 26 publications

Lithium ion conducting PVdF-HFP composite gel electrolytes based on N-methoxyethyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)-imide ionic liquid

Lithium ion conducting PVdF-HFP composite gel electrolytes based on N-methoxyethyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)-imide ionic liquid

Segmental relaxation and ion transport in polymer electrolyte films by dielectric spectroscopy

Effect of plasticizers on ionic conductivity and dielectric relaxation of PEO-LiClO4 polymer electrolyte

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