Title :
Gel electrolyte system based on polyvinyl chloride with addition of LiClO4/propylene carbonate: structure, morphology, thermal and conductivity properties
Author :
Shilov, V.V. ; Gomza, Yu.P. ; Klepko, V.V. ; Slisenko, V.I. ; Vasil´kevich, A.A. ; Shembel, E.M. ; Burmistr, M.V. ; Pissis, P.
Author_Institution :
Inst. of Macromolecular Chem., Acad. of Sci., Kiev, Ukraine
fDate :
8/1/2002 12:00:00 AM
Abstract :
X-ray scattering, calorimetric, and quasi-elastic neutron scattering (QENS) investigations of the polymer gel electrolytes based on 20% PVC, containing 80% of propylene carbonate (PC)-LiClO4 solution as a liquid phase were made. It was established that after incorporating PC into the micropores of PVC gels the glass transition of PC increased by 3 K. This is, evidently, a reflection of an effect of confining liquid PC in the pores of PVC microphase-separated morphology. Addition of salt to the PVC-PC system results in raising Tg of both the pure PC and PVC-PC gel by 10 K. The SAXS data of pure PVC and PVC-PC and PVC-PC-LiClO4 indicate that the gels based on PVC consist of microdomains of a different composition. Single-particle and collective dynamics of solvent molecules in free state and in the pores of polymer gels based on PVC were studied by quasi-elastic neutron scattering technique.
Keywords :
X-ray scattering; differential scanning calorimetry; gels; glass transition; ionic conductivity; neutron diffraction; phase separation; polymer electrolytes; polymer solutions; self-diffusion; solvent effects; DSC; PVC; X-ray scattering; calorimetry; charge carrier motions; collective dynamics; conductivity properties; glass transition; microdomains; microphase-separated morphology; phase separation processes; plasticizers; polymer gel electrolytes; propylene carbonate-LiClO4 solution; quasi-elastic neutron scattering; self-diffusion processes; single-particle dynamics; thermal properties; three-dimensional correlation functions; Atomic measurements; Batteries; Glass; Morphology; Neutron spin echo; Polymer gels; Solvents; Temperature; Thermal conductivity; X-ray scattering;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TDEI.2002.1024432
