Macroscopic properties of single-crystalline and polycrystalline graphene on soft substrate for transparent electrode applications

Roh, Ji Soo; Jang, Jun Kyu; Kwon, Nayoung; Bok, Shingyu; Kim, Yu Jin; Jeon, Cheolho; Yoon, Hee Wook; Kim, Hyo Won; Lim, Byungkwon; Park, Ho Bum

doi:10.1016/j.carbon.2021.02.097

Cited by 8 publications

(9 citation statements)

References 54 publications

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“…An evident color change to black is confirmed when graphene is deposited on Ni plate specimens using the CVD method (Figure 2c,d). 28 Figure 2g presents smooth and homogeneous surface morphology of Gr@Ni−FC in which graphene was precipitated with a fast cooling rate over 100 °C/min in CH 4 partial pressure of 50 torr, as shown in Figure S3. 29 However, the graphene-coated Ni current collector with a slow cooling rate of 25 °C/min shows heterogeneous and bumpy surface morphology with the segregated graphene layers, as shown in Figure 2h.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The graphite pellet shows a smooth surface by the pelletizing manufacture processing, but the Ni plate specimen presents scratches due to the grinding manufacture processing, as shown in Figure e,f. An evident color change to black is confirmed when graphene is deposited on Ni plate specimens using the CVD method (Figure c,d) Figure g presents smooth and homogeneous surface morphology of Gr@Ni–FC in which graphene was precipitated with a fast cooling rate over 100 °C/min in CH 4 partial pressure of 50 torr, as shown in Figure S3 .…”

Section: Resultsmentioning

confidence: 99%

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Multilayered Graphene-Coated Metal Current Collectors with High Electrical Conductivity and Corrosion Resistivity for Flow-Electrode Capacitive Mixing

Lee

Roh

Hwang

et al. 2022

ACS Sustainable Chem. Eng.

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Flow-electrode capacitive mixing (F-CapMix) is a novel technology, harvesting electric energy from salinity gradient power. A continuously circulating flow-electrode enables constant electrical power generation without any intermittent step. Graphite is a widely used current collector because of its high electrical conductivity and corrosion resistivity to seawater for F-CapMix. However, insulating polyacrylate-based polymers should be employed for shaping the graphite body, resulting in reduced electrical conductivity, hindering efficient charge percolation in flow-electrodes. Metal current collectors are difficult to use because of their low corrosion resistance to seawater despite their good electrical conductivity. Here, we first report high electrical conductivity and corrosion-resistive multilayered graphene as a protective layer on metal current collectors in F-CapMix. The graphene is synthesized on metal current collectors through the chemical vapor deposition process. We study chemical and electrochemical aspects of protective layer-coated current collectors by controlling parameters for graphene growth on metal substrates. The multilayered graphene protective layer can not only prevent corrosion from seawater but also enable efficient charge percolation with high electrical conductivity. By employing multilayered graphene-coated Ni current collectors in the F-CapMix unit cell, an almost twice higher power density of 0.75 W•m −2 and current density of 22.3 A•m −2 could be achieved compared to those of graphite.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Multilayered Graphene-Coated Metal Current Collectors with High Electrical Conductivity and Corrosion Resistivity for Flow-Electrode Capacitive Mixing

Lee

Roh

Hwang

et al. 2022

ACS Sustainable Chem. Eng.

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“…[31] Besides, graphene is almost transparent to white light, and the transmittance is more than 97%. Graphene has a photonic resonance response in the ultra-wideband frequency spectrum, rendering it a broad application in energy batteries, [32][33][34] supercapacitors, [35,36] transparent electrodes, [37,38] and photoelectric. [39] Moreover, as the earliest discovered 2D material, the development of graphene's ink is more mature than other 2D materials and is commonly used as printing electrode because of its excellent electrical conductivity.…”

Section: Graphenementioning

confidence: 99%

Printed Electronics Based on 2D Material Inks: Preparation, Properties, and Applications toward Memristors

et al. 2023

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Printed electronics, which fabricate electrical components and circuits on various substrates by leveraging functional inks and advanced printing technologies, have recently attracted tremendous attention due to their capability of large‐scale, high‐speed, and cost‐effective manufacturing and also their great potential in flexible and wearable devices. To further achieve multifunctional, practical, and commercial applications, various printing technologies toward smarter pattern‐design, higher resolution, greater production flexibility, and novel ink formulations toward multi‐functionalities and high quality have been insensitively investigated. 2D materials, possessing atomically thin thickness, unique properties and excellent solution‐processable ability, hold great potential for high‐quality inks. Besides, the great variety of 2D materials ranging from metals, semiconductors to insulators offers great freedom to formulate versatile inks to construct various printed electronics. Here, a detailed review of the progress on 2D material inks formulation and its printed applications has been provided, specifically with an emphasis on emerging printed memristors. Finally, the challenges facing the field and prospects of 2D material inks and printed electronics are discussed.

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“…21,22 Unibody mesh layouts have been prepared by means of electrospinning, the anodic aluminium oxide (AAO) template method, cracked gel lm method, grain boundary lithography, and bio-inspired design method. [21][22][23][24][25][26] Such mesh layouts can be designed for regular and irregular cell congurations. Geometrically symmetrical ultrathin metallic meshes, such as square and hexagonal, have been reported for STCs.…”

Section: Introductionmentioning

confidence: 99%

Hierarchically engineered unibody Au mesh for stretchable and transparent conductors

et al. 2023

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Macroscopic properties of single-crystalline and polycrystalline graphene on soft substrate for transparent electrode applications

Cited by 8 publications

References 54 publications

Multilayered Graphene-Coated Metal Current Collectors with High Electrical Conductivity and Corrosion Resistivity for Flow-Electrode Capacitive Mixing

Multilayered Graphene-Coated Metal Current Collectors with High Electrical Conductivity and Corrosion Resistivity for Flow-Electrode Capacitive Mixing

Printed Electronics Based on 2D Material Inks: Preparation, Properties, and Applications toward Memristors

Hierarchically engineered unibody Au mesh for stretchable and transparent conductors

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