Poly[Bis-EDOT-Isoindigo]:
An Electroactive Polymer
Applied to Electrochemical Supercapacitors
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Abstract
Poly[6,6′-bis(ethylene-3,4-dioxythien-2-yl)]-<i>N</i>,<i>N</i>′-dialkylisoindigo (PBEDOT-iI)
was synthesized
and incorporated as an electroactive material into electrochemical
supercapacitors (ESCs) in type I and type III configurations. In type
I ESCs, PBEDOT-iI provides a specific power of ∼360 W/kg and
specific energy of ∼0.5 Wh/kg, while retaining about 80% of
its electroactivity over 10 000 cycles. In addition, we report
on the use of PBEDOT-iI in type III supercapacitors where operating
voltages as high as 2.5 V were achieved with specific energies of
ca. 15 Wh/kg, albeit with limited stability