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Structural control of charge storage capacity to achieve 100% doping in vapor phase-polymerized PEDOT/tosylate

Rehmen, Junaiz ; Zuber, Kamil ; Modarresi, Mohsen ; Kim, Donghyun ; Charrault, Eric ; Jannasch, Patric LU ; Zozoulenko, Igor ; Evans, Drew and Karlsson, Christoffer LU (2019) In ACS Omega 4(26). p.21818-21826
Abstract
Vapor phase polymerization (VPP) is used to fabricate a series of tosylate-doped poly(3,4-ethylenedioxythiophene) (PEDOT) electrodes on carbon paper. The series of VPP PEDOT/tosylate coatings has varying levels of crystallinity and electrical conductivity because of the use (or not) of nonionic triblock copolymers in the oxidant solution during synthesis. As a result, the impact of the structure on charge storage capacity is investigated using tetra-n-butylammonium hexafluorophosphate (0.1 M in acetonitrile). The ability to insert anions, and hence store charge, of the VPP PEDOT/tosylate is inversely related to its electrical conductivity. In the case of no nonionic triblock copolymer employed, the VPP PEDOT/tosylate achieves... (More)
Vapor phase polymerization (VPP) is used to fabricate a series of tosylate-doped poly(3,4-ethylenedioxythiophene) (PEDOT) electrodes on carbon paper. The series of VPP PEDOT/tosylate coatings has varying levels of crystallinity and electrical conductivity because of the use (or not) of nonionic triblock copolymers in the oxidant solution during synthesis. As a result, the impact of the structure on charge storage capacity is investigated using tetra-n-butylammonium hexafluorophosphate (0.1 M in acetonitrile). The ability to insert anions, and hence store charge, of the VPP PEDOT/tosylate is inversely related to its electrical conductivity. In the case of no nonionic triblock copolymer employed, the VPP PEDOT/tosylate achieves electrochemical doping levels of 1.0 charge per monomer or greater (≥100% doping level). Such high doping levels are demonstrated to be plausible by molecular dynamics simulations and density functional theory calculations. Experiments show that this high doping level is attainable when the PEDOT structure is weakly crystalline with (relatively) large crystallite domains.
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ACS Omega
volume
4
issue
26
pages
21818 - 21826
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85076775877
  • pmid:31891059
ISSN
2470-1343
DOI
10.1021/acsomega.9b02710
language
English
LU publication?
yes
id
75efa241-6502-41af-a57b-3a75b941db38
date added to LUP
2019-09-25 07:42:06
date last changed
2020-03-12 03:00:33
@article{75efa241-6502-41af-a57b-3a75b941db38,
  abstract     = {Vapor phase polymerization (VPP) is used to fabricate a series of tosylate-doped poly(3,4-ethylenedioxythiophene) (PEDOT) electrodes on carbon paper. The series of VPP PEDOT/tosylate coatings has varying levels of crystallinity and electrical conductivity because of the use (or not) of nonionic triblock copolymers in the oxidant solution during synthesis. As a result, the impact of the structure on charge storage capacity is investigated using tetra-<i>n</i>-butylammonium hexafluorophosphate (0.1 M in acetonitrile). The ability to insert anions, and hence store charge, of the VPP PEDOT/tosylate is inversely related to its electrical conductivity. In the case of no nonionic triblock copolymer employed, the VPP PEDOT/tosylate achieves electrochemical doping levels of 1.0 charge per monomer or greater (≥100% doping level). Such high doping levels are demonstrated to be plausible by molecular dynamics simulations and density functional theory calculations. Experiments show that this high doping level is attainable when the PEDOT structure is weakly crystalline with (relatively) large crystallite domains.<br/>},
  author       = {Rehmen, Junaiz and Zuber, Kamil and Modarresi, Mohsen and Kim, Donghyun and Charrault, Eric and Jannasch, Patric and Zozoulenko, Igor and Evans, Drew and Karlsson, Christoffer},
  issn         = {2470-1343},
  language     = {eng},
  number       = {26},
  pages        = {21818--21826},
  publisher    = {The American Chemical Society (ACS)},
  series       = {ACS Omega},
  title        = {Structural control of charge storage capacity to achieve 100% doping in vapor phase-polymerized PEDOT/tosylate},
  url          = {http://dx.doi.org/10.1021/acsomega.9b02710},
  doi          = {10.1021/acsomega.9b02710},
  volume       = {4},
  year         = {2019},
}