, Volume 25, Issue 1, pp 203–214 | Cite as

Synthesis and characterization of pectin-based biopolymer electrolyte for electrochemical applications

  • M. Muthukrishnan
  • C. Shanthi
  • S. SelvasekarapandianEmail author
  • R. Manjuladevi
  • P. Perumal
  • P. Chrishtopher Selvin
Original Paper


An attempt has been made to synthesize a polymer electrolyte based on biopolymer pectin with ammonium thiocyanate (NH4SCN) salt by solution casting technique. Amorphous/crystalline nature of the polymer electrolyte has been studied by X-ray diffraction technique. The complexation between polymer and salt has been confirmed by Fourier transform infrared spectroscopy. A shift in glass transition temperature of the pectin: NH4SCN electrolytes have been observed from the differential scanning calorimetry thermograms. Ionic conductivity of the electrolytes was measured through impedance spectroscopic technique. The frequency and temperature dependence of ionic conductivity has been studied. The highest conductivity of 1.5 × 10−3 S cm−1 was observed for 40 mol% pectin: 60 mol% NH4SCN sample. Transference number measurement was carried out to confirm the nature of the charge transport species in the polymer electrolyte. Electrochemical stability of the highest conducting sample was studied by linear sweep voltammetry (LSV). The value is found to be 3.69 V. Using highest proton-conducting membrane, a proton battery has been constructed.


Differential scanning calorimetry Transference number Impedance spectroscopy Linear sweep voltammetry 


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • M. Muthukrishnan
    • 1
    • 2
  • C. Shanthi
    • 1
  • S. Selvasekarapandian
    • 2
    • 3
    Email author
  • R. Manjuladevi
    • 2
  • P. Perumal
    • 2
    • 3
  • P. Chrishtopher Selvin
    • 3
  1. 1.Department of PhysicsSona College of TechnologySalemIndia
  2. 2.Materials Research CenterCoimbatoreIndia
  3. 3.Department of PhysicsBharathiar UniversityCoimbatoreIndia

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