One-step laser induced conversion of a gelatin-coated polyimide film into graphene: Tunable morphology, surface wettability and microsupercapacitor applications

Wang, Wentao; Lu, Longsheng; Xie, Yingxi; Li, Zehong; Wu, Wenwang; Liang, Rongxuan; Tang, Yong

doi:10.1007/s11431-020-1609-4

Cited by 18 publications

(9 citation statements)

References 53 publications

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“…Our previous works have shown that the IR energy absorption and highly uneven temperature lead to a gas-phase reaction and the "recrystallization" of amorphous carbon into graphene; meanwhile, nano metal oxides are caused by a high-temperature oxidation of the metal ions in air. [36] The thermal stability property and MoO 2 contents in the MoO 2 /LIG composites are confirmed by thermogravimetric analysis (TGA), which is shown in Figure S2, Supporting Information. The weight loss of LIG combustion starts from ≈259.6 °C, when the LIG reacts with oxygen in the airflow to produce CO 2 , leaving only part of the MoO 2 .…”

Section: Lhdmentioning

confidence: 76%

Laser‐Induced Graphene/MoO₂ Core‐Shell Electrodes on Carbon Cloth for Integrated, High‐Voltage, and In‐Planar Microsupercapacitors

Lin

Chen

Wang

et al. 2021

Adv Materials Technologies

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Simple and scalable manufacturing of flexible energy storage units with high electrochemical performance is essential for wearable electronic devices. Herein, a carbon cloth (CC) coated with Mo ion homo‐dispersed hydrogel ink is used as a precursor for laser scribing, during which laser‐induced graphene/MoO2 (LIG/MoO2) is in‐situ synthesized on the substrate. By regulating the surface topography and nanoparticle distribution, the as‐prepared LIG/MoO2‐CC electrode shows a network structure composed of multiple core‐shell fibers. Among them, the carbon‐fiber core phase provides strong mechanical stability, and the in‐situ growth shell of LIG/MoO2 ensures high electrochemical performance. Experimentally, the MSCs assembled by interdigital electrodes can deliver an areal capacitance of 81.8 mF cm−2 and areal energy density of 113.7 μWh cm−2 at a power density of 2.5 mW cm−2, placing them among the best performing LIG‐based MSCs. Through the series‐parallel structure design of electrodes, the output voltage and total capacitance of MSCs can be adjusted according to the demands of actual applications, presenting a huge potential for integration with other wearable electronics.

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Section: Lhdmentioning

confidence: 76%

Laser‐Induced Graphene/MoO₂ Core‐Shell Electrodes on Carbon Cloth for Integrated, High‐Voltage, and In‐Planar Microsupercapacitors

Lin

Chen

Wang

et al. 2021

Adv Materials Technologies

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“…103 To improve the absorptivity of nearinfrared lasers to PI film, many approaches have been attempted, such as surface coating of light-absorbing material. 104 For example, gelatin, a gel with high viscosity and high absorptivity to the near-infrared laser, was used to coat on the surface of PI films before laser pyrolysis to prepare high-quality LIG films. 104 When the laser wavelength is further increased to mid-infrared, foam-like, few-layer, porous structured LIG can be achieved both in pulsed and CW operation modes (Figure 4A and Figure 6I 39 ).…”

Section: Laser Pyrolysismentioning

confidence: 99%

“…104 For example, gelatin, a gel with high viscosity and high absorptivity to the near-infrared laser, was used to coat on the surface of PI films before laser pyrolysis to prepare high-quality LIG films. 104 When the laser wavelength is further increased to mid-infrared, foam-like, few-layer, porous structured LIG can be achieved both in pulsed and CW operation modes (Figure 4A and Figure 6I 39 ). Accordingly, regardless of multiple lases 69 and other lightabsorbing materials coating on PI films, the induced products by mid-infrared CO 2 and ultraviolet lasers are closer to high-quality porous graphene.…”

Section: Laser Pyrolysismentioning

confidence: 99%

Laser Processing of Flexible In-Plane Micro-supercapacitors: Progresses in Advanced Manufacturing of Nanostructured Electrodes

et al. 2022

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Flexible in-plane architecture micro-supercapacitors (MSCs) are competitive candidates for on-chip miniature energy storage applications owing to their light weight, small size, high flexibility, as well as the advantages of short charging time, high power density, and long cycle life. However, tedious and time-consuming processes are required for the manufacturing of high-resolution interdigital electrodes using conventional approaches. In contrast, the laser processing technique enables high-efficiency high-precision patterning and advanced manufacturing of nanostructured electrodes. In this review, the recent advances in laser manufacturing and patterning of nanostructured electrodes for applications in flexible in-plane MSCs are comprehensively summarized. Various laser processing techniques for the synthesis, modification, and processing of interdigital electrode materials, including laser pyrolysis, reduction, oxidation, growth, activation, sintering, doping, and ablation, are discussed. In particular, some special features and merits of laser processing techniques are highlighted, including the impacts of laser types and parameters on manufacturing electrodes with desired morphologies/structures and their applications on the formation of high-quality nanoshaped graphene, the selective deposition of nanostructured materials, the controllable nanopore etching and heteroatom doping, and the efficient sintering of nanometal products. Finally, the current challenges and prospects associated with the laser processing of in-plane MSCs are also discussed. This review will provide a useful guidance for the advanced manufacturing of nanostructured electrodes in flexible in-plane energy storage devices and beyond.

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“…The laser direct writing method has demonstrated the universal adaptability, facility, and variable-area patterns with high-resolution, which have no requirement for the solvents, the utilization of binder, additives, and the adjustment of the viscosity, surface tension, and wettability of the materials to be processed [100][101][102][103][104]. Our group reported on a Ti 3 C 2 T x MXene based Zn-ion hybrid MSCs employing the laser direct writing approach [62].…”

Section: Laser Scribingmentioning

confidence: 99%

Progress and Perspectives in Designing Flexible Microsupercapacitors

Liu

et al. 2021

Micromachines

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Miniaturized flexible microsupercapacitors (MSCs) that can be integrated into self-powered sensing systems, detecting networks, and implantable devices have shown great potential to perfect the stand-alone functional units owing to the robust security, continuously improved energy density, inherence high power density, and long service life. This review summarizes the recent progress made in the development of flexible MSCs and their application in integrated wearable electronics. To meet requirements for the scalable fabrication, minimization design, and easy integration of the flexible MSC, the typical assembled technologies consist of ink printing, photolithography, screen printing, laser etching, etc., are provided. Then the guidelines regarding the electrochemical performance improvement of the flexible MSC by materials design, devices construction, and electrolyte optimization are considered. The integrated prototypes of flexible MSC-powered systems, such as self-driven photodetection systems, wearable sweat monitoring units are also discussed. Finally, the future challenges and perspectives of flexible MSC are envisioned.

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One-step laser induced conversion of a gelatin-coated polyimide film into graphene: Tunable morphology, surface wettability and microsupercapacitor applications

Cited by 18 publications

References 53 publications

Laser‐Induced Graphene/MoO₂ Core‐Shell Electrodes on Carbon Cloth for Integrated, High‐Voltage, and In‐Planar Microsupercapacitors

Laser‐Induced Graphene/MoO₂ Core‐Shell Electrodes on Carbon Cloth for Integrated, High‐Voltage, and In‐Planar Microsupercapacitors

Laser Processing of Flexible In-Plane Micro-supercapacitors: Progresses in Advanced Manufacturing of Nanostructured Electrodes

Progress and Perspectives in Designing Flexible Microsupercapacitors

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One-step laser induced conversion of a gelatin-coated polyimide film into graphene: Tunable morphology, surface wettability and microsupercapacitor applications

Cited by 18 publications

References 53 publications

Laser‐Induced Graphene/MoO2 Core‐Shell Electrodes on Carbon Cloth for Integrated, High‐Voltage, and In‐Planar Microsupercapacitors

Laser‐Induced Graphene/MoO2 Core‐Shell Electrodes on Carbon Cloth for Integrated, High‐Voltage, and In‐Planar Microsupercapacitors

Laser Processing of Flexible In-Plane Micro-supercapacitors: Progresses in Advanced Manufacturing of Nanostructured Electrodes

Progress and Perspectives in Designing Flexible Microsupercapacitors

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Product

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Laser‐Induced Graphene/MoO₂ Core‐Shell Electrodes on Carbon Cloth for Integrated, High‐Voltage, and In‐Planar Microsupercapacitors

Laser‐Induced Graphene/MoO₂ Core‐Shell Electrodes on Carbon Cloth for Integrated, High‐Voltage, and In‐Planar Microsupercapacitors