TY - JOUR
T1 - Stable deep doping of vapor-phase polymerized poly(3,4-ethylenedioxythiophene)/ionic liquid supercapacitors
AU - Karlsson, Christoffer
AU - Nicholas, James
AU - Evans, Drew
AU - Forsyth, Maria
AU - Strømme, Maria
AU - Sjödin, Martin
AU - Howlett, Patrick C.
AU - Pozo-Gonzalo, Cristina
PY - 2016
Y1 - 2016
N2 - Liquid-solution polymerization and vapor-phase polymerization (VPP) have been used to manufacture a series of chloride- and tosylate-doped poly(3,4-ethylenedioxythiophen(PEDOT) carbon paper electrodes. The electrochemistry, specific capacitance, and specific charge were determined for single electrodes in 1-ethyl-3-methylimidazolium dicyanamide (emim dcionic liquid electrolyte. VPP-PEDOT exhibits outstanding properties with a specific capacitance higher than 300 Fg-1, the highest value reported for a PEDOT-based conducting polymer, and doping levels as high as 0.7 charges per monomer were achieved. Furthermore, symmetric PEDOT supercapacitor cells with the emim dca electrolyte exhibited a high specific capacitance (76.4 Fg-1) and high specific energy (19.8 Whkg-1). A Ragone plot shows that the VPP-PEDOTcells combine the high specific power of conventional (“pure”) capacitors with the high specific energy of batteries, a highly sought-after target for energy storage.
AB - Liquid-solution polymerization and vapor-phase polymerization (VPP) have been used to manufacture a series of chloride- and tosylate-doped poly(3,4-ethylenedioxythiophen(PEDOT) carbon paper electrodes. The electrochemistry, specific capacitance, and specific charge were determined for single electrodes in 1-ethyl-3-methylimidazolium dicyanamide (emim dcionic liquid electrolyte. VPP-PEDOT exhibits outstanding properties with a specific capacitance higher than 300 Fg-1, the highest value reported for a PEDOT-based conducting polymer, and doping levels as high as 0.7 charges per monomer were achieved. Furthermore, symmetric PEDOT supercapacitor cells with the emim dca electrolyte exhibited a high specific capacitance (76.4 Fg-1) and high specific energy (19.8 Whkg-1). A Ragone plot shows that the VPP-PEDOTcells combine the high specific power of conventional (“pure”) capacitors with the high specific energy of batteries, a highly sought-after target for energy storage.
KW - Doping
KW - Electrochemistry
KW - Ionic liquids
KW - Polymerization
KW - Polymers
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U2 - 10.1002/cssc.201600333
DO - 10.1002/cssc.201600333
M3 - Article
C2 - 27325487
AN - SCOPUS:84977123751
VL - 9
SP - 2112
EP - 2121
JO - ChemSusChem
JF - ChemSusChem
SN - 1864-5631
IS - 16
ER -