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  A micromolding method for transparent and flexible thin-film supercapacitors and hybrid supercapacitors

Liu, T., Yan, R., Huang, H., Pan, L., Cao, X., deMello, A., et al. (2020). A micromolding method for transparent and flexible thin-film supercapacitors and hybrid supercapacitors. Advanced Functional Materials, 30(46): 2004410. doi:10.1002/adfm.202004410.

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Liu, Tian, Autor
Yan, Runyu1, Autor           
Huang, Haijian, Autor
Pan, Long, Autor
Cao, Xiaobao, Autor
deMello, Andrew, Autor
Niederberger, Markus, Autor
Affiliations:
1Martin Oschatz, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2364733              

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Schlagwörter: flexible supercapacitors, micromolding, porous carbon, transparent hybrid supercapacitor, transparent supercapacitors
 Zusammenfassung: Thin-film supercapacitors are promising candidates for energy storage in wearable electronics due to their mechanical flexibility, high power density, long cycling life, and fast-charging capability. In addition to all of these features, device transparency would open up completely new opportunities in wearable devices, virtual reality or in heads-up displays for vehicle navigation. Here a method is introduced for micromolding Ag/porous carbon and Ag/NixFeyOz@reduced graphene oxide (rGO) into grid-like patterns on polyethylene terephthalate foils to produce transparent thin-film supercapacitors and hybrid supercapacitors. The supercapacitor delivers a high areal capacitance of 226.8 µF cm−2 at a current density of 3 µA cm−2 and with a transparency of 70.6%. The cycling stability is preserved even after 1000 cycles under intense bending. A hybrid supercapacitor is additionally fabricated by integrating two electrodes of Ag/porous carbon and Ag/NixFeyOz@rGO. It offers an areal capacitance of 282.1 µF cm−2 at a current density of 3 µA cm−2, a transparency of 73.3% and the areal capacitance only decreases slightly under bending. This work indicates that micromolding of nano- and micro-sized powders represents a powerful method for preparing regular electrode patterns, which are fundamental for the development of transparent energy storage devices.

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Sprache(n): eng - English
 Datum: 2020-09-092020
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1002/adfm.202004410
BibTex Citekey: doi:10.1002/adfm.202004410
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Titel: Advanced Functional Materials
  Andere : Adv. Funct. Mater.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Weinheim : Wiley-VCH Verlag GmbH
Seiten: - Band / Heft: 30 (46) Artikelnummer: 2004410 Start- / Endseite: - Identifikator: ISSN: 1616-301X