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The zwitterion effect in high-conductivity polyelectrolyte materials

Nature Materials volume 3, pages 29–32 (2004)Cite this article

Abstract

The future of lithium metal batteries as a widespread, safe and reliable form of high-energy-density rechargeable battery depends on a significant advancement in the electrolyte material used in these devices. Molecular solvent-based electrolytes have been superceded by polymer electrolytes in some prototype devices1, primarily in a drive to overcome leakage and flammability problems, but these often exhibit low ionic conductivity and prohibitively poor lithium-ion transport2,3,4. To overcome this, it is necessary to encourage dissociation of the lithium ion from the anionic polymer backbone, ideally without the introduction of competing, mobile ionic species. Here we demonstrate the effect of zwitterionic compounds, where the cationic and anionic charges are immobilized on the same molecule, as extremely effective lithium ion 'dissociation enhancers'. The zwitterion produces electrolyte materials with conductivities up to seven times larger than the pure polyelectrolyte gels, a phenomenon that appears to be common to a number of different copolymer and solvent systems.

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Figure 1
Figure 2: The effect of zwitterion addition on the conductivity of the polyelectrolyte systems.
Figure 3: The effect of zwitterion addition on the conductivity of the 50:50 P(AMPSLi-c-DMAA) copolymer system.
Figure 4: 7Li NMR spectra and diffusion coefficients of the gels with and without zwitterion.
Figure 5

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References

  1. Morris, R.S. & Dixon, B.G. J. Power Sources 119–121, 487–491 (2003).

    Article  Google Scholar 

  2. Gray, F.M. Polymer Electrolytes (Royal Society of Chemistry, Cambridge, 1991).

    Google Scholar 

  3. Gray, F.M. Solid Polymer Electrolytes–Fundamentals and Technological Applications (VCH, New York, 1991).

    Google Scholar 

  4. Scrosati, B., Croce, F. & Persi, L. Impedance spectroscopy study of PEO-based nano-composite polymer electrolytes. J. Electrochem. Soc. 147, 1718–1721 (2000).

    Article  CAS  Google Scholar 

  5. Sun, J., MacFarlane, D.R. & Forsyth, M. Lithium polyelectrolyte-ionic liquid systems. Solid State Ionics 147, 333–339 (2000).

    Article  Google Scholar 

  6. Tiyapiboonchaiya, C., Pringle, J.M., MacFarlane, D.R., Forsyth, M. & Sun, J. Polyelectrolyte-in-ionic-liquid electrolytes. Macromol. Chem. Phys. 204, 2147–2154 (2003).

    Article  CAS  Google Scholar 

  7. Yoshizawa, M., Hirao, M., Akita, K.I. & Ohno, H. Ion conduction in zwitterionic-type molten salts and their polymers. J. Mater. Chem. 11, 1057–1062 (2001).

    Article  CAS  Google Scholar 

  8. Ohno, H., Yoshizawa, M. & Ogihara, W. A new type of polymer gel electrolyte: zwitterionic liquid/polar polymer mixture. Electrochimica Acta. 48, 2079–2083 (2003).

    Article  CAS  Google Scholar 

  9. Pringle, J.M., Forsyth, C.M., Forsyth, M. & MacFarlane, D.R. The Zwitterion 1-butylimidazolium-3-(n-butanesulphonate) Acta Crystallogr. E59, 1759–1761 (2003).

    Google Scholar 

  10. Adebahr, J. et al. Ion transport in polymer electrolytes containing nanoparticulate TiO2: the influence of polymer morphology. Phys. Chem. Chem. Phys. 5, 720–725 (2003).

    Article  CAS  Google Scholar 

  11. Grosberg, A.Y. & Khokhlov, A.R. Statistical Physics of Macromolecules (AIP, New York, 1994).

    Google Scholar 

  12. Osawa, F. Polyelectrolytes (Marcel Dekker, New York, 1971).

    Google Scholar 

  13. Travas-Sejdic Steiner, J.R., Desilvestro, J. & Pickering, P. Ion conductivity of novel polyelectrolyte gels for secondary lithium-ion polymer batteries. Electrochim. Acta 46, 1461–1466 (2001).

    Article  Google Scholar 

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Authors and Affiliations

  1. School of Chemistry, Monash University, Wellington Road, Clayton, 3800, Victoria, Australia

    Churat Tiyapiboonchaiya, Jennifer M. Pringle, Patrick C. Howlett & Douglas R. MacFarlane

  2. School of Physics and Materials Engineering, Monash University, Wellington Road, Clayton, 3800, Victoria, Australia

    Jiazeng Sun, Nolene Byrne & Maria Forsyth

Authors
  1. Churat Tiyapiboonchaiya
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  2. Jennifer M. Pringle
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  3. Jiazeng Sun
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  4. Nolene Byrne
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  5. Patrick C. Howlett
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  6. Douglas R. MacFarlane
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  7. Maria Forsyth
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Correspondence to Douglas R. MacFarlane.

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Tiyapiboonchaiya, C., Pringle, J., Sun, J. et al. The zwitterion effect in high-conductivity polyelectrolyte materials. Nature Mater 3, 29–32 (2004). https://doi.org/10.1038/nmat1044

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