Screen-Printed High-Performance Flexible Electrothermal Films Based on Three-Dimensional Intercalation Graphene Nanosheets/MWCNT/Carbon Black Composite

Liao, Yi Hung; Tian, Yufei; Ma, Xiao‐Hua; Zhao, Meijun; Qian, Jun; Wang, Xin

doi:10.1021/acsami.0c10924

Cited by 40 publications

(38 citation statements)

References 31 publications

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“…From Figure 1, we can see that the folded and ultrathin GNSs are produced by liquid-phase stripping of Gt, which we have demonstrated in detail in previous work. 20,21 Figure 1b shows the morphology of carbon particles prepared by ball milling in the control experimental group. It can be seen that the particle size of CB after ball milling is mostly around 25 nm.…”

Section: Methodsmentioning

confidence: 99%

“…This work is based on the unique natural suspension stability of biological polysaccharide xanthan gum, combined with the excellent conductivity of carbon nanoconductive nanocomposites, long-term stability in the air environment, no harmful gas emissions, and other advantages, to prepare writable water-based environmental friendly graphene nanosheets (GNSs)/multiwalled carbon nanotubes (MWCNTs)/carbon black (CB) nanocomposite conductive ink. On the basis of our previous work, , the mass fraction of resin and conductive carbon materials in ink is reduced, and the stability and rheological properties of the ink are improved. GNSs were prepared by a liquid-phase stripping method, and formed a composite conductive filler with acid-treated MWCNTs (f-MWCNTs) and carbon black (CB).…”

Section: Introductionmentioning

confidence: 99%

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Flexible Electronics Directly Written with an Ultrastable Ballpoint Pen Based on a Graphene Nanosheets/MWCNTs/Carbon Black Nanocomposite

Liao

Tian

et al. 2020

ACS Appl. Electron. Mater.

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A writable ultrafine water-based conductive ink with excellent stability and no harmful gas emission was prepared. The mass fraction of carbon conductive particles was 4.95%, and the mean median particle size (D50) was as low as 5 μm. The size of conductive carbon particles in the ink was analyzed with continuous milling, and the phenomenon of reagglomeration of conductive particles with a small particle size and large specific surface area was explained. Moreover, the sheet resistance of the writable graphene nanosheets/multiwalled carbon nanotubes (MWCNTs)/carbon black nanocomposite conductive ink was 11.1 Ω•sq −1 . With a centrifugal speed of 3000 r/min for 15 min, the performance of the ink remained stable. Additionally, a stable conductive ballpoint pen was developed based on the writable conductive ink, and the excellent electrical and mechanical properties of the directly handwritten paper-based flexible circuit and the electrochemical properties of the directly handwritten paper-based chemical battery were tested.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexible Electronics Directly Written with an Ultrastable Ballpoint Pen Based on a Graphene Nanosheets/MWCNTs/Carbon Black Nanocomposite

Liao

Tian

et al. 2020

ACS Appl. Electron. Mater.

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“…Recently, it has been reported that the thermoelectric performance of TEG increased by using assisting materials, i.e., the conducting polymer and highly electrically conductive carbon black CB, and by introducing Bi 2 Te 3 with CNTs, and vice versa [22,62,68,75,87]. Young Du et al studied the effect of carbon black on the thermoelectric performance of a Bi 2 Te 3 -based thermoelectric generator.…”

Section: Organic-inorganic and Hybrid Matrixmentioning

confidence: 99%

Recent Advances in Materials for Wearable Thermoelectric Generators and Biosensing Devices

Sattar

Yeo

2022

Materials

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Recently, self-powered health monitoring systems using a wearable thermoelectric generator (WTEG) have been rapidly developed since no battery is needed for continuous signal monitoring, and there is no need to worry about battery leakage. However, the existing materials and devices have limitations in rigid form factors and small-scale manufacturing. Moreover, the conventional bulky WTEG is not compatible with soft and deformable tissues, including human skins or internal organs. These limitations restrict the WTEG from stabilizing the thermoelectric gradient that is necessary to harvest the maximum body heat and generate valuable electrical energy. This paper summarizes recent advances in soft, flexible materials and device designs to overcome the existing challenges. Specifically, we discuss various organic and inorganic thermoelectric materials with their properties for manufacturing flexible devices. In addition, this review discusses energy budgets required for effective integration of WTEGs with wearable biomedical systems, which is the main contribution of this article compared to previous articles. Lastly, the key challenges of the existing WTEGs are discussed, followed by describing future perspectives for self-powered health monitoring systems.

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“…Conductive carbon black (CB) is a kind of amorphous carbon with a large specific surface area, and the particle size is usually about 20–40 nm. Our previous research found that it can efficiently fill the network between GNSs and CNTs, so as to effectively reduce the percolation threshold …”

Section: Introductionmentioning

confidence: 99%

Large-Scale Production of Electrothermal Films with GNSs/CNTs/CB Three-Dimensional Structure Ink by Screen Printing

Zhang

Sun

et al. 2022

ACS Appl. Electron. Mater.

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With the development of flexible electronic technology, there is a growing demand for electrothermal materials that are environmentally friendly, safe, low-cost, and large-scale producible for efficiently solving thermal management issues. In this study, low-cost water-based carbon series electrothermal ink is prepared by a dispersion and grinding method, and the electrothermal films with various areas can be prepared on a large scale by screen printing. Simultaneously, the three-dimensional (3D) conductive network structure of graphene nanosheets (GNSs)/multiwalled carbon nanotubes (MWCNTs)/carbon black (CB) is built by the ball milling dispersion process. Due to the low percolation threshold network formed by GNSs/CNTs/CB, the prepared ink has excellent conductivity, and the square resistance (R sq ) reaches 4.3 Ω sq −1 with a thickness of 25 μm. Moreover, the saturation temperature (T s ) of the screen-printed electrothermal film (4 cm × 4 cm) can reach 165 °C with an input voltage of 10 V, and it has extremely low power consumption (444.75 cm 2 W −1 ). The electrothermal film also maintains relatively stable electrical properties in a bending test of 115 000 cycles. When the heating device (9 cm × 31 cm) is applied to the expanded polypropylene (EPP) box, the food temperature can be kept around 60 °C and the flavor can be well preserved.

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Screen-Printed High-Performance Flexible Electrothermal Films Based on Three-Dimensional Intercalation Graphene Nanosheets/MWCNT/Carbon Black Composite

Cited by 40 publications

References 31 publications

Flexible Electronics Directly Written with an Ultrastable Ballpoint Pen Based on a Graphene Nanosheets/MWCNTs/Carbon Black Nanocomposite

Flexible Electronics Directly Written with an Ultrastable Ballpoint Pen Based on a Graphene Nanosheets/MWCNTs/Carbon Black Nanocomposite

Recent Advances in Materials for Wearable Thermoelectric Generators and Biosensing Devices

Large-Scale Production of Electrothermal Films with GNSs/CNTs/CB Three-Dimensional Structure Ink by Screen Printing

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