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Ionic noise measurement in polymer electrolytes

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Abstract

Electrical noise associated with ion transport (termed as “ionic noise”) has been measured at different temperatures, using a lock-in amplifier and dynamic signal analyzer for a polymer electrolyte PEO:NH4I and its CdS dispersed composite. The ionic noise suddenly increases as the polymer passes through its phase transition at T g and T m. The T g-peak in the noise measurement appears more clearly than what it does in DTA/DSC or conductivity measurements. Therefore, we suggest the noise technique as a good probe for studying phase transitions in ion conducting solid electrolytes. Further, the present noise measurements also confirm the known results of DTA/DSC studies that both T g and T m of polymer electrolytes shift on the formation of composites.

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Authors and Affiliations

  1. Physics Department, Banaras Hindu University, Varanasi, 221005, India

    P. K. Singh & S. Chandra

  2. National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi, 110012, India

    D. P. Singh

  3. Physics Department, Indian Institute of Technology Delhi, New Delhi, 110016, India

    Neeraj Khare

  4. Max Planck Institute for Polymer Research Solid State Chemistry, Mainz, 55128, Germany

    Amreesh Chandra

Authors
  1. Amreesh Chandra
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  2. D. P. Singh
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  3. P. K. Singh
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  4. Neeraj Khare
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  5. S. Chandra
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Correspondence to S. Chandra.

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Chandra, A., Singh, D.P., Singh, P.K. et al. Ionic noise measurement in polymer electrolytes. Ionics 12, 349–352 (2006). https://doi.org/10.1007/s11581-006-0058-7

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  • DOI: https://doi.org/10.1007/s11581-006-0058-7

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