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M. KUMAR1,*
Polymer composites of polymer electrolyte (PEO/NH4ClO4) dispersed with organic polymer polyaniline or inorganic semiconductors Bi2S3/CuS in different weight ratios have been prepared and characterized. Preparation of composites is done by adding relevant amount of Bismuth nitrate or Cupper sulphate in a viscous solution of polymer PEO/NH4ClO4 complex. On sulfuration by bubbling H2S through it, the in situ formation and dispersal of Bi2S3 or CuS resulted. SEM/TEM studies showed the dispersal of particles from μm to nm sizes. Impedance plots have given the enhanced bulk conductivity of the composites than pristine polymer electrolyte. Wagner’s polarization studies confirm the mixed ionic + electronic behaviour of composites with the contribution due to electrons/holes as 8-30 % to the total conductivity. The overall bulk conductivity is increased too. Maier’s space charge model explains enhancement of dominating ionic conductivity behaviour with the addition of dispersed phase CuS, Bi2S3 or organic polyaniline in the pristine polymer electrolyte..
Polymer electrolyte composites, Mixed ionic + electronic conductivity, SEM, TEM.
M. KUMAR, Mixed ion and electronic conduction in polyethylene oxide based polymer electrolyte composites, Optoelectronics and Advanced Materials - Rapid Communications, 12, 11-12, November-December 2018, pp.737-743 (2018).
Submitted at: April 26, 2018
Accepted at: Nov. 29, 2018
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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