期刊
BULLETIN OF MATERIALS SCIENCE
卷 27, 期 6, 页码 523-527出版社
INDIAN ACAD SCIENCES
DOI: 10.1007/BF02707280
关键词
polymer gel electrolytes; ionic conductivity; solvent free polymer electrolytes
An attempt has been made in the present work to prepare polyvinyl alcohol (PVA) based proton conducting gel electrolytes in ammonium thiocyanate (NH4SCN) solution and characterize them. DSC studies affirm the formation of gels along with the presence of partial complexes. The cole-cole plots exhibit maximum ionic conductivity (2-58 x 10(-3) S cm(-1)) for gel samples containing 6 wt% of PVA. The conductivity of gel electrolytes exhibit liquid like nature at low polymer concentrations while the behaviour is seen to be affected by the formation of PVA-NH4SCN complexes upon increase in polymer content beyond 5 wt%. Temperature dependence of ionic conductivity exhibits VTF behaviour.
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