Enhancing charge storage of conjugated polymer electrodes with phenolic acids
2016 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 302, 324-330 p.Article in journal (Refereed) PublishedText
We here present studies of electrochemical doping of poly(1-aminoanthraquinone) (PAAQ) films with three structurally different phenolic acids. The examined phenolic acids (sinapic, ferulic and syringic acid) were selected due to their resemblance to redox active groups, which can be found in lignin. The outstanding electrochemical stability of PAAQ films synthesized for this work enabled extensive cycling of phenolic acid-doped PAAQ films. Potentiodynamic and charge discharge studies revealed that phenolic acid-doped PAAQ films exhibited enhanced capacitance in comparison to undoped PAAQ films, together with appearance of redox activity characteristics specific for each dopant. Electrochemical kinetic studies performed on microelectrodes affirmed the fast electron transfer for hydroquinone-to-quinone reactions with these phenolic compounds. These results imply the potential application of phenolic acids in cheap and degradable energy storage devices. (C) 2015 Elsevier B.V. All rights reserved.
Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2016. Vol. 302, 324-330 p.
Conjugated polymers; Phenolic acids; Quinones; Redox capacitor
IdentifiersURN: urn:nbn:se:liu:diva-124084DOI: 10.1016/j.jpowsour.2015.10.062ISI: 000366068800042OAI: oai:DiVA.org:liu-124084DiVA: diva2:897232
Funding Agencies|Knut and Alice Wallenberg foundation through the project Power Papers; Wallenberg Scholar grant2016-01-252016-01-192016-01-25