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Self-assembled three-dimensional and compressible interdigitated thin-film supercapacitors and batteries
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.ORCID iD: 0000-0002-1978-3469
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.ORCID iD: 0000-0001-8622-0386
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2015 (English)In: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 6, 7259- p.Article in journal (Refereed) Published
Abstract [en]

Traditional thin-film energy-storage devices consist of stacked layers of active films on two-dimensional substrates and do not exploit the third dimension. Fully three-dimensional thin-film devices would allow energy storage in bulk materials with arbitrary form factors and with mechanical properties unique to bulk materials such as compressibility. Here we show three-dimensional energy-storage devices based on layer-by-layer self-assembly of interdigitated thin films on the surface of an open-cell aerogel substrate. We demonstrate a reversibly compressible three-dimensional supercapacitor with carbon nanotube electrodes and a three-dimensional hybrid battery with a copper hexacyanoferrate ion intercalating cathode and a carbon nanotube anode. The three-dimensional supercapacitor shows stable operation over 400 cycles with a capacitance of 25â €‰Fâ €‰g â '1 and is fully functional even at compressions up to 75%. Our results demonstrate that layer-by-layer self-assembly inside aerogels is a rapid, precise and scalable route for building high-surface-area 3D thin-film devices.

Place, publisher, year, edition, pages
Nature Publishing Group, 2015. Vol. 6, 7259- p.
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Polymer Technologies
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URN: urn:nbn:se:kth:diva-169664DOI: 10.1038/ncomms8259ISI: 000355539700001Scopus ID: 2-s2.0-84930666441OAI: oai:DiVA.org:kth-169664DiVA: diva2:824319
Note

QC 20150624

Available from: 2015-06-22 Created: 2015-06-22 Last updated: 2017-12-04Bibliographically approved

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Karabulut, ErdemWågberg, Lars

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