Inkjet Printing of Electrically Conductive Patterns of Carbon Nanotubes

Kordás, Krisztián; Mustonen, Tero; Tóth, Géza; Jantunen, Heli; Lajunen, Marja; Soldano, Caterina; Talapatra, Saikat; Kar, Swastik; Vajtai, Róbert; Ajayan, Pulickel M.

doi:10.1002/smll.200600061

Cited by 477 publications

(342 citation statements)

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“…1A), the paper was transformed into highly conductive paper with a low sheet resistance around 10 ⍀/sq (Fig. 1B), which is lower than previous reports by several orders of magnitude because of the ink formulation and the choice of substrates (18,19). Fig.…”

Section: Resultsmentioning

confidence: 62%

Highly conductive paper for energy-storage devices

Hu¹,

Choi²,

Yang³

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

1,137

898

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Paper, invented more than 2,000 years ago and widely used today in our everyday lives, is explored in this study as a platform for energy-storage devices by integration with 1D nanomaterials. Here, we show that commercially available paper can be made highly conductive with a sheet resistance as low as 1 ohm per square (⍀/sq) by using simple solution processes to achieve conformal coating of single-walled carbon nanotube (CNT) and silver nanowire films. Compared with plastics, paper substrates can dramatically improve film adhesion, greatly simplify the coating process, and significantly lower the cost. Supercapacitors based on CNT-conductive paper show excellent performance. When only CNT mass is considered, a specific capacitance of 200 F/g, a specific energy of 30 -47 Watt-hour/kilogram (Wh/kg), a specific power of 200,000 W/kg, and a stable cycling life over 40,000 cycles are achieved. These values are much better than those of devices on other flat substrates, such as plastics. Even in a case in which the weight of all of the dead components is considered, a specific energy of 7.5 Wh/kg is achieved. In addition, this conductive paper can be used as an excellent lightweight current collector in lithiumion batteries to replace the existing metallic counterparts. This work suggests that our conductive paper can be a highly scalable and low-cost solution for high-performance energy storage devices.conformal coating ͉ carbon nanotubes ͉ nanomaterial ͉ solution process P rintable solution processing has been exploited to deposit various nanomaterials, such as fullerene, carbon nanotubes (CNTs), nanocrystals, and nanowires for large-scale applications, including thin-film transistors (1-3), solar cells (4, 5), and energy-storage devices (6, 7), because the process is low-cost while maintaining the unique properties of the nanomaterials. In these processes, flat substrates, such as glass, metallic films, Si wafers, and plastics, have been used to hold nanostructure films. Nanostructured materials are usually first capped with surfactant molecules so that they can be well-dispersed as separated particles in a solvent to form ''ink.'' The ink is then deposited onto the flat substrates, followed by surfactant removal and solvent evaporation. To produce high-quality films, significant efforts have been spent on ink formulation and rheology adjustment. Moreover, because the surfactants are normally insulating, and thus limit the charge transfer between the nanomaterials, their removal is particularly critical. However, this step involves extensive washing and chemical displacement, which often cause mechanical detachment of the film from the flat substrate. Polymer binders or adhesives have been used to improve the binding of nanomaterials to substrates, but these can also cause an undesirable decrease in the film conductivity. These additional procedures increase the complexity of solution processing and result in high cost and low throughput. Here, we exploit paper substrates used in daily life to solve these issues a...

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Section: Resultsmentioning

confidence: 62%

Highly conductive paper for energy-storage devices

Hu¹,

Choi²,

Yang³

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

1,137

898

View full text Add to dashboard Cite

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“…DWNT and SWNT nanotubes were functionalized with carboxyl groups in concentrated nitric acid (6 M) for 24 hours at 80°C [21][22][23]. The acid/NT mixture was subsequently washed with distilled water and centrifuged several times until their aqueous solution reached neutral pH.…”

Section: Methodsmentioning

confidence: 99%

“…1A and C for DWNTas and SWNTas, respectively) and the carboxyl group functionalized nanotubes ( Fig. 1B and D for DWNTox and SWNTox, respectively) in the locality of the D band (disorder sp 3 band, around 1350 cm -1 ) and G band (corresponding stretching mode in graphene plane, around 1580 cm -1 ) of graphene sheet [22]. There is a significant increase of D-band intensity which is attributed to graphene sheet carbon sp 3 hybridization due to functionalization with oxygen containing groups; G/D ratio decreased from 11.3 for DWNTas to 2.8 for DWNTox, from 24.4 for SWNTas to 2.0 for SWNTox, reflecting strong functionalization of graphene sheet of both DW and SW carbon nanotubes with carboxyl containing groups.…”

Section: Raman Spectroscopymentioning

confidence: 98%

Electrochemical properties of double wall carbon nanotube electrodes

Pumera

2007

Nanoscale Res Lett

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Electrochemical properties of double wall carbon nanotubes (DWNT) were assessed and compared to their single wall (SWNT) counterparts. The double and single wall carbon nanotube materials were characterized by Raman spectroscopy, scanning and transmission electron microscopy and electrochemistry. The electrochemical behavior of DWNT film electrodes was characterized by using cyclic voltammetry of ferricyanide and NADH. It is shown that while both DWNT and SWNT were significantly functionalized with oxygen containing groups, double wall carbon nanotube film electrodes show a fast electron transfer and substantial decrease of overpotential of NADH when compared to the same way treated single wall carbon nanotubes.

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“…Recent successful examples include a spray method to produce SWNT thin film electrodes and supercapacitors [18,19], and use of the Meyer rod coating method to spread carbon nanotubes on paper for use in both supercapacitors and lithium ion batteries [20]. While the abovementioned methods typically produce continuous films of carbon nanotubes with no control over geometry and position, inkjet printing methods would provide the capability of printing carbon nanotube films in controlled geometries and at specific locations [21][22][23]. However, there have been few reports discussing the electrochemical characteristics of inkjet-printed SWNT films and their applications in supercapacitors.…”

mentioning

confidence: 99%

Inkjet printing of single-walled carbon nanotube/RuO2 nanowire supercapacitors on cloth fabrics and flexible substrates

et al. 2010

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Single-walled carbon nanotube (SWNT) thin film electrodes have been printed on flexible substrates and cloth fabrics by using SWNT inks and an off-the-shelf inkjet printer, with features of controlled pattern geometry (0.4-6 cm 2 ), location, controllable thickness (20-200 nm), and tunable electrical conductivity. The as-printed SWNT films were then sandwiched together with a piece of printable polymer electrolyte to form flexible and wearable supercapacitors, which displayed good capacitive behavior even after 1,000 charge/discharge cycles. Furthermore, a simple and efficient route to produce ruthenium oxide (RuO 2 ) nanowire/SWNT hybrid films has been developed, and it was found that the knee frequency of the hybrid thin film electrodes can reach 1,500 Hz, which is much higher than the knee frequency of the bare SWNT electrodes (~158 Hz). In addition, with the integration of RuO 2 nanowires, the performance of the printed SWNT supercapacitor was significantly improved in terms of its specific capacitance of 138 F/g, power density of 96 kW/kg, and energy density of 18.8 Wh/kg. The results indicate the potential of printable energy storage devices and their significant promise for application in wearable energy storage devices.

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Inkjet Printing of Electrically Conductive Patterns of Carbon Nanotubes

Cited by 477 publications

References 50 publications

Highly conductive paper for energy-storage devices

Highly conductive paper for energy-storage devices

Electrochemical properties of double wall carbon nanotube electrodes

Inkjet printing of single-walled carbon nanotube/RuO2 nanowire supercapacitors on cloth fabrics and flexible substrates

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