i and ii using a double roll laminator at several pressure values 5 5 18 kg cm and temperatures 110 125 u00b0 c after extraction of plasticizer in diethyl ether the laminated samples were dried for 1 hour at 70 u00b0 c in an air oven and cut into 75 u00d7 25 mm test strips peel strength at the separator electrode interface of the samples was tested using an instron model 5542 tensile tester at a strain rate of 200 min the results showed that the interface couples of the samples prepared according to the present invention registered substantial peel bond strength which depending upon the composition and type of electrode and the specific lamination conditions was of the order of 24 to 88 gf cm importantly this value markedly exceeds the peel strength between the three component layers of the celgard 2300 membrane which was separately determined to be between about 6 and 12 gf cm these data were inconclusive in determining the actual electrode separator interfacial bond strength however since in most instances bond failure occurred not at that interface but mostly within the body of the respective electrode composition layers it was thus apparent that the electrode separator interfacial bond effected by the present invention indeed exceeds the strength of the individual electrode composition layers additional peel test samples were similarly prepared and placed in sealed plastic laminate envelopes filled with a 1.