A Functional Organic Battery

Significance

An organic battery was constructed using polymer P1, which contains a high density of pendant nitroxide radical functional groups. The reversible electrochemical formation of the oxoammonium cation from a nitroxide radical forms the basis of charge storage in this battery. To avoid dissolving the polymer in an electrolyte solution while fabricating the battery, a radical-compatible photocrosslinking strategy was developed using a bisazide photocrosslinker. Using this strategy, cathode-active films of P1 were produced and the resulting battery could be reversibly charged and discharged for up to 1000 cycles.