There is provided novel polycarbonate polymers and oligomers for use as electrolytes in electrochemical devices having a higher content of organic carbonates so as to enhance electrical conductivity. The polymers are prepared by a condensation reaction or by ester exchange.

Hay polímeros y oligomers proporcionados del polycarbonate de la novela para el uso pues los electrólitos en los dispositivos electroquímicos que tienen un contenido más alto de carbonatos orgánicos para realzar conductividad eléctrica. Los polímeros son preparados por una reacción de la condensación o por intercambio del éster.

 
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