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Inkjet printing of electrochemically-exfoliated graphene nano-platelets
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics. Qiqihar Univ, Coll Commun & Elect Engn, Qiqihar 161006, Heilongjiang, Peoples R China.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
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2016 (English)In: Synthetic metals, ISSN 0379-6779, E-ISSN 1879-3290, Vol. 220, 318-322 p.Article in journal (Refereed) Published
Abstract [en]

In this study, we report on a facile method of inkjet printing of graphene nano-platelets (GNPs). The GNPs are exfoliated from graphite by means of an electrochemical process in an inorganic salt based electrolyte. The electrochemically exfoliated GNPs with oxygen-bearing functional groups exhibit spectroscopic features similar to those of reduced graphene oxides. As a result, ink formulation with such GNPs for inkjet printing readily accomplishes without using stabilizer and various conductive objects are easily fabricated on different substrates by inkjet printing. The as-printed films of the electrochemically exfoliated GNPs deliver an electrical conductivity of 44 S/m, a typical value for as-printed pristine GNP films in the literature. A simple thermal treatment results in an improved DC conductivity by two orders of magnitude to ~2.5 × 103 S/m.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 220, 318-322 p.
Keyword [en]
Graphene; Electrochemical process; Inkjet printing
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:uu:diva-298103DOI: 10.1016/j.synthmet.2016.06.029ISI: 000383811300040OAI: oai:DiVA.org:uu-298103DiVA: diva2:944440
Funder
Swedish Foundation for Strategic Research , Dnr SE13-0061Swedish Research Council, 621-2014-5596
Available from: 2016-06-29 Created: 2016-06-29 Last updated: 2016-10-18Bibliographically approved

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