On the structural and impedance characteristics of Li- doped PEO, using n-butyl lithium in hexane as dopant

doi:10.1063/1.4862009

Title: On the structural and impedance characteristics of Li- doped PEO, using n-butyl lithium in hexane as dopant

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Abstract

Nowadays polymer based solid state electrolytes for applications in rechargeable battery systems are highly sought after materials, pursued extensively by various research groups worldwide. Numerous methods are discussed in literature to improve the fundamental properties like electrical conductivity, mechanical stability and interfacial stability of polymer based electrolytes. The application of these electrolytes in Li-ion cells is still in the amateur state, due to low ionic conductivity, low lithium transport number and the processing difficulties. The present work is an attempt to study the effects of Li doping on the structural and transport properties of the polymer electrolyte, poly-ethelene oxide (PEO) (Molecular weight: 200,000). Li doped PEO was obtained by treating PEO with n-Butyllithium in hexane for different doping concentrations. Structural characterization of the samples was done by XRD and FTIR techniques. Impedance measurements were carried out to estimate the ionic conductivity of Li doped PEO samples. It is seen that, the crystallinity of the doped PEO decreases on increasing the doping concentration. XRD and FTIR studies support this observation. It is inferred that, ionic conductivity of the sample is increasing on increasing the doping concentration since less crystallinity permits more ionic transport. Impedance measurements confirm the results quantitatively.

Authors:

Anand, P. B., E-mail: anandputhirath@gmail.com, E-mail: jayalekshmi@cusat.ac.in; Jayalekshmi, S., E-mail: anandputhirath@gmail.com, E-mail: jayalekshmi@cusat.ac.in ^[1]

Division for Research in Advanced Materials Department of Physics Cochin University of Science and Technology Cochin 22, Kerala (India)

Publication Date:: Tue Jan 28 00:00:00 EST 2014

OSTI Identifier:: 22264006

Resource Type:: Journal Article

Journal Name:: AIP Conference Proceedings

Additional Journal Information:: Journal Volume: 1576; Journal Issue: 1; Conference: OMTAT 2013: 2. international conference on optoelectronic materials and thin films for advanced technology, Kochi, Kerala (India), 3-5 Jan 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; DOPED MATERIALS; ELECTRIC CONDUCTIVITY; ELECTROLYTES; FOURIER TRANSFORMATION; HEXANE; INFRARED SPECTRA; LITHIUM; LITHIUM IONS; POLYMERS; SOLIDS; X-RAY DIFFRACTION

Citation Formats


                    Anand, P. B., E-mail: anandputhirath@gmail.com, E-mail: jayalekshmi@cusat.ac.in, and Jayalekshmi, S., E-mail: anandputhirath@gmail.com, E-mail: jayalekshmi@cusat.ac.in. On the structural and impedance characteristics of Li- doped PEO, using n-butyl lithium in hexane as dopant.  United States: N. p., 2014. 
        Web.  doi:10.1063/1.4862009.

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                    Anand, P. B., E-mail: anandputhirath@gmail.com, E-mail: jayalekshmi@cusat.ac.in, & Jayalekshmi, S., E-mail: anandputhirath@gmail.com, E-mail: jayalekshmi@cusat.ac.in. On the structural and impedance characteristics of Li- doped PEO, using n-butyl lithium in hexane as dopant.  United States.  https://doi.org/10.1063/1.4862009

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                    Anand, P. B., E-mail: anandputhirath@gmail.com, E-mail: jayalekshmi@cusat.ac.in, and Jayalekshmi, S., E-mail: anandputhirath@gmail.com, E-mail: jayalekshmi@cusat.ac.in. 2014.  
        "On the structural and impedance characteristics of Li- doped PEO, using n-butyl lithium in hexane as dopant".  United States.  https://doi.org/10.1063/1.4862009.

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@article{osti_22264006,

  title        = {On the structural and impedance characteristics of Li- doped PEO, using n-butyl lithium in hexane as dopant},

  author       = {Anand, P. B., E-mail: anandputhirath@gmail.com, E-mail: jayalekshmi@cusat.ac.in and Jayalekshmi, S., E-mail: anandputhirath@gmail.com, E-mail: jayalekshmi@cusat.ac.in},

  abstractNote = {Nowadays polymer based solid state electrolytes for applications in rechargeable battery systems are highly sought after materials, pursued extensively by various research groups worldwide. Numerous methods are discussed in literature to improve the fundamental properties like electrical conductivity, mechanical stability and interfacial stability of polymer based electrolytes. The application of these electrolytes in Li-ion cells is still in the amateur state, due to low ionic conductivity, low lithium transport number and the processing difficulties. The present work is an attempt to study the effects of Li doping on the structural and transport properties of the polymer electrolyte, poly-ethelene oxide (PEO) (Molecular weight: 200,000). Li doped PEO was obtained by treating PEO with n-Butyllithium in hexane for different doping concentrations. Structural characterization of the samples was done by XRD and FTIR techniques. Impedance measurements were carried out to estimate the ionic conductivity of Li doped PEO samples. It is seen that, the crystallinity of the doped PEO decreases on increasing the doping concentration. XRD and FTIR studies support this observation. It is inferred that, ionic conductivity of the sample is increasing on increasing the doping concentration since less crystallinity permits more ionic transport. Impedance measurements confirm the results quantitatively.},

  doi          = {10.1063/1.4862009},

  url          = {https://www.osti.gov/biblio/22264006},
  journal      = {AIP Conference Proceedings},

  issn         = {0094-243X},

  number       = 1,

  volume       = 1576,

  place        = {United States},

  year         = {Tue Jan 28 00:00:00 EST 2014},

  month        = {Tue Jan 28 00:00:00 EST 2014}

}

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