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Ionic Conductivity Study on Hydroxyethyl Cellulose (HEC) doped with NH4Br Based Biopolymer Electrolytes

Author Affiliations

  • 1Advanced Materials Research Group, Renewable Energy Interest Group, Department of Physical Sciences, Faculty of Science and Technology, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, MALAYSIA

Res. J. Recent Sci., Volume 1, Issue (11), Pages 16-21, November,2 (2012)


A biopolymer electrolytes (BEs) based on hydroxyethyl cellulose (HEC) doped with NH4Br has been prepared via solution casting technique. XRD shows that all complexes are amorphous. Impedance of the electrolytes has been measured using electrical impedance spectroscopy (EIS) over the frequency range from 50 Hz to 1 MHz. The highest ionic conductivity obtained at room temperature is 3.61 x 10-4 Scm-1 for 25 wt. % of NHBr. The temperature-dependent of HEC based BEs system conductivity data obeys Arrhenius relationship. Conductivity enhancement in the HEC based BEs is caused not only by the increase in the concentration of NH4Br but also by the increase in mobility and diffusion coefficient of ions. Dielectric data were analyzed using complex permittivity ε and complex electrical modulus M for the sample with the highest ionic conductivity at various temperatures.


  1. Hooper A. and North J.M., The fabrication and performance of all solid state polymer-based rechargeable lithium cells, Solid State Ionics, , 1161–1166 (1983)
  2. Acosta J.L. and Morales E., Structural, morphological and electrical characterization of polymer electrolytes based on PEO/PPO blends, Solid State Ionics, 85 (1-4), 85–90 (1996)
  3. Kim J.Y. and Kim S.H., Ionic conduction behavior of network polymer electrolytes based on phosphate and polyether copolymers, Solid State Ionics, 124 (1–2), 91–99 (1999)
  4. Whang W.T. and Lu C.L., Effects of polymer matrix and salt concentration on the ionic conductivity of plasticized polymer electrolytes, J. Appl. Polym. Sci., 56 (12), 1635-1643 (1995)
  5. Machado G.O., Prud'homme R.E. and Pawlicka A., Conductivity and Thermal Analysis Studies of Solid Polymeric Electrolytes Based On Plasticized Hydroxyethyl Cellulose, e-Polymers, 115, 1-9 (2007)
  6. Mudigoudra B.S., Masti S.P. and Chougale R.B., Thermal Behavior of Poly (vinyl alcohol)/ Poly (vinyl pyrrolidone)/ Chitosan Ternary Polymer Blend Films, Res. J. Recent Sci., 1(9), 83-86 (2012)
  7. Kadir M.F.Z., Majid S.R. and Arof A.K., Plasticized chitosan–PVA blend polymer electrolyte based proton battery, Electrochim. Acta, 55 (4), 1475-1482 (2010)
  8. Pawlicka A. and Donoso J.P., Polymer Electrolytes based on Natural Polymers”, Woodhead Publishing Limited, Cambridge (2010)
  9. Lorcks J., Properties and applications of compostable starch-based plastic material, Polym. Degrad. Stab., 59 (1-3), 245-249 (1998)
  10. Miller K.S. and Krochta J.M., Oxygen and aroma barrier properties of edible films: A review. Trends Food Sci. Tech., 8 (7), 228-237 (1997)
  11. Hodge R.M., Edward G.H. and Simon G.P., Water absorption and states of water in semicrystalline poly(vinyl alcohol) films, Polym. J., 37(8), 1371-1376 (1996)
  12. Ramya C.S., Selvasekarapandian S., Savitha T., Hirankumar G., Baskaran R. and Angelo P.C., Conductivity and thermal behavior of proton conducting polymer electrolyte based on poly (-vinyl pyrrolidone), Eur. Polym. J., 42 (10), 2672-2677 (2006)
  13. Samsudin A.S., Khairul Wan. M. and Isa M.I.N., Characterization on the potential of carboxy methylcellulose for application as proton conducting biopolymer electrolytes, J. Non-Cryst. Solids, 358 (8), 1104-1112 (2012)
  14. Samsudin A.S. and Isa M.I.N., Structural and ionic transport study on CMC doped NH4Br: A new types of Biopolymer Electrolytes, J. Appl. Sci., 12 (2), 174-179 (2012)
  15. Shuhaimi N.E.A., Teo L.P., Majid S.R. and Arof A.K., Transport studies of NHNO doped methyl cellulose electrolyte, Synth. Met., 160 (9-10), 1040-1044 (2010)
  16. Schantz S. and Torell L.M., Evidence of dissolved ions and ion pairs in dilute poly (propylene oxide)-salt solutions, Solid State Ionics, 60 (1-3): 47-53 (1993)
  17. Samsudin A.S. and Isa M.I.N., Structural and electrical properties of carboxy methylcellulose- dodecyltrimethyl ammonium bromide-based biopolymer electrolytes system, Int. J. Polymer. Mater., 61 (1), 30-40 (2012)
  18. Raphael E., Avellaneda C.O., Manzolli B. and Pawlicka A., Agar-based films for application as polymer electrolytes, Electrochim. Acta, 55 (4), 1455-1459 (2010)
  19. Neyertz S. and Brown D. Local structure and mobility of ions in polymer electrolytes: A molecular dynamics simulation study of the amorphous PEONaI system, J. Chem. Phys., 104 (10), 3797-3809 (1996)
  20. Rajendran S. and Uma T., Experimental investigations on PVC–LiAsF–DBP polymer electrolyte systems, J. Power Sources, 87 (1-2), 218-222 (2000)
  21. Hashmi S.A., Kumar A., Maurya K.K. and Chandra S., Proton-conducting polymer electrolyte I. The polyethylene oxide NH CIO system, J. Phys. D: Appl. Phys., 23 (10), 1307-1314 (1990)
  22. Ramesh S. and Arof A.K., Electrical conductivity studies of polyvinyl chloride-based electrolytes with double salt system, Solid State Ionics, 136, 1197-1200 (2000)
  23. Rice M.J. and Roth W.L., Ionic transport in super ionic conductors: a theoretical model, J. Solid State Chem., 4 (2), 294-310 (1972)
  24. Yokota S., Ueno T., Kitaoka T. and Wariishi H., Molecular imaging of single cellulose chains aligned on a highly oriented pyrolytic graphite surface, Carbohydr. Res., 342 (17), 2593-2598 (2007)
  25. Majid S.R. and Arof A.K., Proton-conducting polymer electrolyte films based on chitosan acetate complexed with NHNO salt, Physica B, 355 (1), 78-82 (2005)
  26. Buraidah M.H. and Arof A.K. Characterization of chitosan/PVA blended electrolyte doped with NHI. J. Non-Cryst. Solids, 357 (16-17), 3261-3266 (2011)
  27. Govindaraj G., Baskaran N., Shahi K. and Monoravi P., Preparation, conductivity, complex permittivity and electric modulus in AgI-AgO-SeO-MoO glasses, Solid State Ionics,76 (1-2), 47-55 (1995)
  28. Ramesh S. and Arof A.K. Ionic conductivity studies of plasticized poly (vinyl chloride) polymer, Mater Sci. Eng. ., 85 (1), 11-15 (2001)
  29. Ramesh S., Koay H.L., Kumutha K. and Arof A.K., FTIR studies of pvc/pmma blend based polymer electrolytes, Spectrochim. Acta A., 66 (4-5), 1237-1242 (2007)