Effect of Anion Size on the Conductivity Behaviour of Hexanoyl Chitosan-Based Polymer Electrolytes

Tan Winie; F.H. Muhammad; N.H.A. Rosli

doi:10.4028/www.scientific.net/AMR.545.317

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 545Effect of Anion Size on the Conductivity Behaviour...

Effect of Anion Size on the Conductivity Behaviour of Hexanoyl Chitosan-Based Polymer Electrolytes

Abstract:

Films of hexanoyl chitosan containing lithium perchlorate (LiClO₄) or lithium triflouromethanesulfonate (LiCF₃SO₃) were prepared by solution casting technique. The effect of anion size on the conductivity behaviour of hexanoyl chitosan has been investigated. The conductivity of 4.15 × 10^-7 S/cm and 4.07 × 10^-6 S/cm were achieved for the hexanoyl chitosan-LiClO₄ and hexanoyl chitosan-LiCF₃SO₃ electrolyte system at 50wt.% of salt concentration, respectively. The Rice and Roth model was used to analysis quantitatively the obtained conductivity trends for the prepared electrolyte systems. The diffusion coefficients of cations and anions were calculated from the conductivity and transference number measurements. This is followed by the discussion on the diffusion coefficients of ClO₄^- and CF₃SO₃^- anion.

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Periodical:

Advanced Materials Research (Volume 545)

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317-320

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.545.317

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July 2012

Authors:

Tan Winie, F.H. Muhammad, N.H.A. Rosli

Keywords:

Conductivity, Hexanoyl Chitosan, LiCF₃SO₃, LiClO₄

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