Storage of Energy. Polymeric Batteries

This distribution causes a problem the best-described conducting polymers interchange anions with the electrolyte, and the Li electrode liberates Li+during discharge. The salt accumulates in the electrolyte [Fig. 32(a)], requiring a great volume and mass in order to avoid the precipitation of the salt. This fact reduces the specific energy of the battery to impractical values. 

The main advantage of all these devices is the high potential of the individual cell, ranging between 2 and 4 V, depending on the polymeric electrode. One of the problems of these batteries, always observed but never explained, is that the electrodic potential decreases continuously 

New materials can improve the specific energy of the automobile battery, which is attracting most of the scientific effort. Nevertheless, an increase in specific power can only be obtained by a good understanding of the structural and molecular aspects that affect the electrochemistry of these materials. 

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