Activation barriers provide insight into the mechanism of self-discharge in polypyrrole

Henrik Olsson, Maria Strømme, Leif Nyholm, Martin Sjödin

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Conducting polymers are envisioned to play a significant role in the development of organic matter based electrical energy conversion and storage systems. However, successful utilization of conducting polymers relies on a fundamental understanding of their inherent possibilities and limitations. In this report we studied the temperature dependence of the self-discharge in polypyrrole and show that the rate of self-discharge is kinetically controlled by a polymer intrinsic endergonic electron transfer reaction forming a reactive intermediate. We further show that this intermediate is intimately linked to a process known as overoxidation. This process is general for most, if not all, p-doped conducting polymers irrespective of medium. The results herein are therefore expected to significantly impact the development of future energy storage systems with conducting polymer based components.

Original languageEnglish
Pages (from-to)29643-29649
Number of pages7
JournalJournal of Physical Chemistry C
Volume118
Issue number51
DOIs
Publication statusPublished - 2014 Dec 26
Externally publishedYes

Fingerprint

polypyrroles
Polypyrroles
Conducting polymers
conducting polymers
Chemical activation
activation
energy storage
Energy storage
energy conversion
electric power
Energy conversion
Biological materials
Polymers
electron transfer
temperature dependence
polypyrrole
Electrons
polymers
Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

Activation barriers provide insight into the mechanism of self-discharge in polypyrrole. / Olsson, Henrik; Strømme, Maria; Nyholm, Leif; Sjödin, Martin.

In: Journal of Physical Chemistry C, Vol. 118, No. 51, 26.12.2014, p. 29643-29649.

Research output: Contribution to journalArticle

Olsson, Henrik ; Strømme, Maria ; Nyholm, Leif ; Sjödin, Martin. / Activation barriers provide insight into the mechanism of self-discharge in polypyrrole. In: Journal of Physical Chemistry C. 2014 ; Vol. 118, No. 51. pp. 29643-29649.
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