Highly Conductive Water‐Based Polymer/Graphene Nanocomposites for Printed Electronics

Koutsioukis, Apostolos; Georgakilas, Vasilios; Belessi, Vassiliki; Zbořil, Radek

doi:10.1002/chem.201700997

Cited by 26 publications

(28 citation statements)

References 50 publications

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“…In the last few years, there has been tremendous interest about printing techniques and especially inks, as a new approach for large-scale, high-speed fabrication of printed electronics, in contrast with techniques already used (lithography, etc.). Carbon-based printing inks have already been studied extensively for the new era of printed electronics [13,14,17,18].…”

Section: Introductionmentioning

confidence: 99%

Fluorescent Carbon Dots Ink for Gravure Printing

Koutsioukis

Belessi

Georgakilas

2019

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In the present article, we describe the use of highly fluorescent carbon dots (CDs) for the preparation of an effective water-based carbon dot ink (CD-ink) for gravure printing. Carbon dots were prepared hydrothermally from citrate and triethylenetetramine, and mixed properly with certain resins that are used in gravure inks. The as-produced CD gravure ink was used successfully for printing high quality fluorescent images.

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Section: Introductionmentioning

confidence: 99%

Fluorescent Carbon Dots Ink for Gravure Printing

Koutsioukis

Belessi

Georgakilas

2019

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“…Figure 3c shows fingers (as shown in Figure 3c) are all clearly observed in the profilometer scans of the printed patterns with different thickness ( Figure S11, Supporting Information), which confirms that the gravure printing using this water-soluble ink has high resolution feature. These porous structures and the opening edges exposing to electrolyte in the printed graphene@PVA-H 3 PO 4 electrodes will be favorable to facilitate the electrolyte ions diffusion for utilizing the electrochemical surface area of graphene materials, [29] although the existence of PVA polymer between the conductive graphene sheets will decrease the electrical conductivity of graphene@ PVA-H 3 PO 4 electrodes due to the the polymer tunneling barriers, [26,27] as shown in Figure S13 (Supporting Information). During the printing process, since the printed graphene@PVA-H 3 PO 4 layer should be dried before printing another layer, the gully structures with rough surfaces existing in the patterns might be due to the weak spreading of new graphene@PVA-H 3 PO 4 ink on the former dry layer.…”

Section: Wwwadvelectronicmatdementioning

confidence: 99%

Water‐Soluble Hybrid Graphene Ink for Gravure‐Printed Planar Supercapacitors

Chang

Sai

et al. 2018

Adv Elect Materials

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efforts have been devoted to the design of graphene microstructures, most of graphene materials are difficult to be applied in all-solid-state planar supercapacitors because of their agglomerations due to the strong π-π interaction between the large basal planes and poor electrical conductivity in the fabricated microelectrodes. [13] This undesirable phenomenon significantly prevents the access of PVA-based gel electrolyte ions into the interplanar space, resulting in limited ion accessible surface area of graphene and sluggish ion transport kinetics so that there are lots of "dead surfaces" of graphene without contribution to the energy storage. [1] For reducing the graphene agglomerations, studies during the past few years were explored. Wu et al. used lithography to pattern reduced graphene oxide (RGO) microelectrodes for planar supercapacitors with areal capacitance around 0.32 mF cm −2 . [14] Meanwhile, Gao et al. directly used another laser writing to reduce graphene oxide (GO) paper and readily obtained a number of configurations for the RGO-based planar supercapacitors with an areal capacitance of 0.59 mF cm −2 . [15] El-Kady and Kaner further demonstrated a fabrication of graphene-based planar supercapacitors with an areal capacitance over 2.0 mF cm −2 by direct laser writing on graphite oxide films using a standard Light-Scribe DVD burner. [16] Although promising areal capacitances of graphene-based planar supercapacitors with fewer graphene agglomerations have been achieved by these microfabrication technologies, the global depositions of graphene material are usually required and patterned into interdigitated structures via etching or laser scribing, resulting in the complicated processing and wasting more graphene material.Selecting suitable microfabrication methods using proper graphene material is particularly crucial for enhancing the electrochemical performance of planar supercapacitors. As a powerful and cost efficient direct patterning method, printing technology attracts significant interest in graphene-based planar supercapacitors due to its simple processing and few material waste. [17][18][19] For example, Li et al., [13] Wang et al., [18] and Liu et al. [6] developed the full-inkjet-printing and screen printing for graphene-based planar supercapacitors. Although these two printing techniques provide the advantage of directly patterning the microelectrodes, to some extent, they usually face the risk of the nozzle clogging and nonuniform pattern when needing high resolution feature. Fortunately, gravure printing as one Flexible printed all-solid-state graphene-based planar supercapacitors have attracted great attentions for their potential applications in portable and wearable electronics. However, the limited ion accessible surface area and slow ion diffusion rate lead to low specific capacitance and poor rate performance. Increasing the diffussion of polyvinyl alcohol (PVA)-based gel electrolyte into the printed graphene microelectrodes is a great challenge for improving its energy storage...

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“…For instance, p-phenylene diamine has been used simultaneously as reducing and functionalizing agent of graphene oxide, giving organically modified graphene nanosheets with high values of electrical conductivity [17,18]. Lately, graphene has been widely studied as conductive ink that could be used for printed electronics in several printing methods [19][20][21][22][23][24][25]. Both, electrical conductivity and dispersibility, into either, water or organic solvents, are the major requirements for the applicability of graphene as conductive inks.…”

Section: Introductionmentioning

confidence: 99%

“…Such graphene derivatives can be potentially used as inks in the most common printing technologies such as gravure, flexography, screen printing and ink-jet on a variety of substrates such as paper, polymer, glass or metal [19,[21][22][23][26][27][28][29]. Printed electronics are widely employed in the fields of packaging, printing and graphic arts, logistics, energy, medical and pharmaceutical, automotive, lighting and textiles [30].…”

Section: Introductionmentioning

confidence: 99%

“…Secor et al [29] showed that graphene dispersed in ethanol with ethyl cellulose as stabilizing agent and terpineol as solvent can act as ink for gravure printing creating lines with conductivities up to 10 4 S m −1 but only after annealing at 250 °C. Recently, Georgakilas et al [21] presented the fabrication of highly conductive water based gravure ink, based on a nanohybrid that combines pristine graphene nanosheets and hydroxylated MWNTs, with conductivities up to ~ 5000 S m −1 without any annealing procedure. In addition, highresolution gravure printing with graphene ink on corona treated PET foil has been developed by Knoll et al [31] for biomedical applications achieving sheet resistances up to ~ 15-20 Ohm sq −1 .…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous reduction and surface functionalization of graphene oxide for highly conductive and water dispersible graphene derivatives

et al. 2018

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A simple and effective preparation method for the simultaneous reduction and functionalization of graphene oxide (rGO) by 2,4-diamino benzene sulfonic acid has been developed. The derivatives exhibit excellent conductivity and high dispersibility in various solvents. The successful preparation of rGO and the presence of the sulfonated aromatic diamine on rGO surface has been confirmed by infrared and X-ray photoelectron spectroscopy, while, the analysis by micro-Raman spectroscopy indicated that the reduction/functionalization alters the lattice structure of GO by the increment the defect density when the 2,4-diamino benzene sulfonic acid is used. Moreover, the study of the dried products by X-ray diffraction spectroscopy suggested the turbostratic restacking of the exfoliated rGO into graphite-like nanostructures. The obtained derivative of simultaneous reduction and functionalization of GO was used for the preparation of highly conductive water-based gravure ink, which in turn, was successfully applied in printing on various flexible substrates, demonstrating its great potentiality in graphene-based flexible and printed electronics applications.

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Highly Conductive Water‐Based Polymer/Graphene Nanocomposites for Printed Electronics

Cited by 26 publications

References 50 publications

Fluorescent Carbon Dots Ink for Gravure Printing

Fluorescent Carbon Dots Ink for Gravure Printing

Water‐Soluble Hybrid Graphene Ink for Gravure‐Printed Planar Supercapacitors

Simultaneous reduction and surface functionalization of graphene oxide for highly conductive and water dispersible graphene derivatives

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