By adding different weight of CuBr 2(ratio n=/=24

16

12

8

4)in Polyoxyethylene(molecular weight=5×10 6)

We prepared a series of high polymer film of solid electrolyte T(EO) n-CuBr 2 with the method of mixed solution and evaporation in vacuum.Their complex impedance spectra were measured in detail at different hydrostatic pressure in the range from 0.1MPa to 300MPa.Through further spectra decomposition the dependence of ionic conductivity(or dielectric constant)on measuring frequency under different pressure was obtained respenctively.As a result of spectra analysis

the variation of ionic conductivity and dielectric constant with hydrostatic pressure in P(EO)n-CuBr2 film was calculated precisely.On the basis of X-Ray diffraction

above mentioned pressure effects were discussed tentatively according to the physical picture of ionic transport -passage and polarization mechanism of high polymer.Adding the plasticizers

propylene carbonate(CH3-CH-OCH2-OC=O

C4H6O3)with concentration of mol.ratio npc/ntotal=20% can enhance ionic conductivity under 120～300MPa one order of magnitude.