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High-Performance Ultrathin Flexible Solid-State Supercapacitors Based on Solution Processable Mo1.33C MXene and PEDOT:PSS
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.
University of Gothenburg, Sweden.
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2018 (English)In: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 28, no 2, article id 1703808Article in journal (Refereed) Published
Abstract [en]

MXenes, a young family of 2D transition metal carbides/nitrides, show great potential in electrochemical energy storage applications. Herein, a high performance ultrathin flexible solid-state supercapacitor is demonstrated based on a Mo1.33C MXene with vacancy ordering in an aligned layer structure MXene/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) composite film posttreated with concentrated H2SO4. The flexible solid-state supercapacitor delivers a maximum capacitance of 568 F cm-3, an ultrahigh energy density of 33.2 mWh cm-3 and a power density of 19 470 mW cm-3. The Mo1.33C MXene/PEDOT:PSS composite film shows a reduction in resistance upon H2SO4 treatment, a higher capacitance (1310 F cm-3) and improved rate capabilities than both pristine Mo1.33C MXene and the nontreated Mo1.33C/PEDOT:PSS composite films. The enhanced capacitance and stability are attributed to the synergistic effect of increased interlayer spacing between Mo1.33C MXene layers due to insertion of conductive PEDOT, and surface redox processes of the PEDOT and the MXene.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2018. Vol. 28, no 2, article id 1703808
Keywords [en]
composite films; Mo1.33C; MXene; PEDOT:PSS; solid-state supercapacitors
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-144437DOI: 10.1002/adfm.201703808ISI: 000419454000003OAI: oai:DiVA.org:liu-144437DiVA, id: diva2:1176707
Note

Funding Agencies|Swedish Energy Agency [EM 42033-1]; SSF Synergy Grant FUNCASE; SSF Research Infrastructure Fellow program [RIF 14-0074, RIF14-0079]; Knut and Alice Wallenberg (KAW) Foundation [KAW 2015.0043]; Swedish Research Council (VR) [642-2013-8020]

Available from: 2018-01-23 Created: 2018-01-23 Last updated: 2018-02-20

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The full text will be freely available from 2018-11-22 00:01
Available from 2018-11-22 00:01

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Leiqiang, QinTao, QuanzhengEl Ghazaly, AhmedPersson, PerRosén, JohannaZhang, Fengling

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