Investigation on the structure and the conductivity of plasticized polymer electrolytes (original) (raw)

Leiling Yang l)~7~artm ('plt ~l t'~d.t'tner Mat('rm/~. 1,¢et]mg Research l,~stilute ~!l' ('hcmtca/htdu.~try. I0(~013 B('!/in,~,,, t'.R ( 'hina Electrical properties of polymer electrolytes depend on the structure ot polym¢l matrix. It ~as reported that lranst)ortalion o1" carries in polymer electrolFles was correlated with tile segment movement oF the amorphous phase. D?namic properly of amorphous phase and the cwstallinit} of electrolyte would effecl the conducti~it~ of pol}mcr electrol}tes. The properties or" I)E() Li('F~SO~ modified with additives were investigated b~ conducti',ity measurement. I)S(' and ~tt-, "~F-NMR experiments. It was tbund [hat addilives would increase ~he conten! of amorphous phase and salt concentration m amorphous phase, and improve the dynamic property of amorphous phase. The spin-spin relaxation lime for the polymer matrix is also increased. It was indicated that the glass transition temperature of modified electrolFtcs was decreased from 21 (" Ior typical PE()-Li('F~S(), dectrolytes to about -48 C. These iml)ro~ements result in the increase of the conducf.iv il,v.