Solution-processed poly(3,4-ethylenedioxythiophene) nanocomposite paper electrodes for high-capacitance flexible supercapacitors
2016 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 4, no 5, 1714-1722 p.Article in journal (Refereed) PublishedText
Although the development of nanostructured poly(3,4-ethylenedioxythiophene) (PEDOT) with large capacitance and high mechanical flexibility is crucial for the realization of high-performance supercapacitors, such electrodes are generally very challenging to manufacture rapidly and inexpensively. Herein, a straightforward, fast and versatile approach for the fabrication of mechanically robust, highly conductive and flexible nanostructured PEDOT paper is described. The composite material, which can be made within 30 minutes using solution based reactions, exhibits a large surface area (137 m2 g-1) and low sheet resistance (1.4 [capital Omega] [square]-1) as well as high active mass loading (7.3 mg cm-2). Symmetric PEDOT paper-based supercapacitors are shown to provide high specific electrode capacitances (i.e. 90 F g-1, 920 mF cm-2, and 54 F cm-3) and excellent cycling stability (93% capacity retention after 15 000 cycles at 30 mA cm-2) in 1.0 M H2SO4. The electrochemical performance of the supercapacitors was also maintained at different bending angles demonstrating the flexibility of the devices. Given the widespread interest in PEDOT and its broad applicability, the present straightforward procedure for the fabrication of nanostructured PEDOT holds great promise for the realization of different flexible energy storage devices.
Place, publisher, year, edition, pages
2016. Vol. 4, no 5, 1714-1722 p.
Research subject Engineering Science with specialization in Nanotechnology and Functional Materials
IdentifiersURN: urn:nbn:se:uu:diva-272208DOI: 10.1039/C5TA10122KISI: 000368839200022OAI: oai:DiVA.org:uu-272208DiVA: diva2:893481
FunderSwedish Foundation for Strategic Research , RMA-110012Swedish Energy AgencyCarl Tryggers foundation