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Asymmetric Aqueous Supercapacitor Based on p- and n-Type Conducting Polymers
Linköping University, Sweden.
Linköping University, Sweden.
Chalmers University of Technology, Sweden.
Linköping University, Sweden.
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2019 (English)In: ACS Applied Energy Materials, ISSN 2574-0962Article in journal (Refereed) Epub ahead of print
Abstract [en]

We demonstrated an asymmetric aqueous supercapacitor made of p- and n-type conducting polymer electrodes. We used the high electron affinity (EA) n-type polymer poly(benzimidazobenzophenanthroline) (BBL) as the anode conducting material, and the low ionization potential (IP) p-type polar polythiophene p(g42T-T) as the cathode material. EABBL matches IPp(g42T-T), enabling the fabrication of all-organic asymmetric p/n-supercapacitors that function in aqueous electrolytes. The devices operate in a voltage window up to 1 V, yielding areal capacitances of 90 mF cm-2 and specific capacitances of 33 F g-1 as well as excellent cycling stability with almost 100% capacitance retention over 10 000 cycles.

Place, publisher, year, edition, pages
American Chemical Society , 2019.
Keywords [en]
aqueous electrolyte, asymmetric supercapacitor, conducting polymers, energy storage
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-39856DOI: 10.1021/acsaem.9b00853Scopus ID: 2-s2.0-85070725952OAI: oai:DiVA.org:ri-39856DiVA, id: diva2:1347219
Note

 Funding details: Suomen Kulttuurirahasto; Funding details: Vetenskapsrådet, VR; Funding details: VINNOVA; Funding details: Stiftelsen för Strategisk Forskning, SSF; Funding details: SFO-Mat-LiU 2009 00971; Funding details: Knut och Alice Wallenbergs Stiftelse; Funding text 1: The authors wish to thank Kosala Wijeratne, Anna Hofmann, and Ujwala Ail for useful comments on the work. The authors acknowledge financial support from the Swedish Research Council, the Swedish Foundation for Strategic Research, the Knut and Alice Wallenberg Foundation, ÅForsk, VINNOVA, and the Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linköping University (Faculty Grant SFO-Mat-LiU 2009 00971). T.-P.R. acknowledges support from the Finnish Cultural Foundation.

Available from: 2019-08-30 Created: 2019-08-30 Last updated: 2019-08-30Bibliographically approved

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CiteExportLink to record
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