Flexible Boron-Doped Laser-Induced Graphene Microsupercapacitors

Peng, Zhiwei; Ye, Ruquan; Mann, Jason A.; Zakhidov, Dante; Li, Yilun; Smalley, Preston R.; Lin, Jian; Tour, James M.

doi:10.1021/acsnano.5b00436

Cited by 607 publications

(424 citation statements)

References 55 publications

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“…The capacitance slightly decreases (96% of retention) as the number of cycles increases up to 10 000, confi rming the good electrochemical stability of the proposed devices, with stability performance comparable to recently published boron-doped LIG supercapacitors. [ 28 ] The LIG/PDMS supercapacitors show also excellent mechani cal performance without signifi cant sacrifi ce of their electrochemical storage properties. During the stretching and bending process, from 0% to 50% and from 0° to 160° respectively, the CVs of the LIG/PDMS device retain quasi-rectangular shapes and remain almost unchanged even at the high scan rate of 10 V s −1 indicating the remarkable stability under deformation of the here proposed energy storage devices ( Figure 4 ).…”

Section: Wileyonlinelibrarycommentioning

confidence: 99%

A Highly Stretchable Supercapacitor Using Laser‐Induced Graphene Electrodes onto Elastomeric Substrate

Lamberti

Clerici

Fontana

et al. 2016

Advanced Energy Materials

241

155

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(polyimide and polyetherimide) [ 20 ] that cannot provide the suitable mechanical properties required for stretchable energystorage devices.Herein we report a simple method to transfer the LIG porous layer obtained onto polyimide sheet to a transparent and elastomeric substrate such as PDMS (polydimethylsiloxane). Morphology and chemical-physical properties of the obtained material were deeply characterized by electron microscopy investigation, contact angle measurements and vibrational spectroscopy analysis. The as-fabricated electrodes were assembled into symmetric electrical double-layer supercapacitors and, thanks to the intrinsic mechanical properties of PDMS, the retention of energy-storage performance under bending and stretching conditions was demonstrated.The fabrication process of the LIG/PDMS electrodes is described in the experimental section (see also Supporting Information) and schematically represented in Figure 1 a-d: porous LIG pattern was obtained by a direct writing of polyimide sheet using a nanosecond CO 2 laser (a); afterward the PDMS was poured onto the written sample and the air was evacuated by a vacuum step in order to allow the full infi ltration of PDMS into the 3D network (b); after a thermal curing at 80 °C for 1 h the LIG/PDMS slide was manually peeled off from the polyimide sheet (c,d). The resulting composite material take advantage of the unique mechanical properties typical of elastomers (Figure 1 e) and of the good electrical conductivity and high surface area intrinsically present in LIG structures. Figure 1 f,g show the transparency of a logo pattern written on polyimide foil and then transferred onto PDMS slice respectively. The preservation of the electric conduction was tested by using LIG/PDMS composite to close a circuit (powering a green LED) as shown in Figure 1 h and by electrical measurements. Current-voltage characteristics shown in Figure S1 (Supporting Information) were recorded on the LIG/PDMS sample subjected to stretching in the range 0%-50%, confi rming the good maintenance of electrical properties.FESEM characterization was used to assess the morphology of the LIG sample before and after transfer onto PDMS substrate. Figure 2 a,b show the characteristic 3D foam-like structure of the laser-written LIG sample, which is composed of multilayer graphene walls. The holey foam-like structure, which is a result of the emission of gases during the irradiation process, [ 20,21 ] is actually well suited for both infi ltration with PDMS and impregnation with the electrolyte for supercapacitor application. Figure 2 c presents a cross-sectional view of a LIG sample after it is successfully transferred onto a PDMS substrate through the cast-and-peel process. Thanks to the effective infi ltration of PDMS, the LIG shows good adhesion to the underlying fl exible substrate. Moreover, as shown in Figure 2 d-f, a 3D structure of interconnected multilayer The fi eld of wearable electronics has been evolving very rapidly in the last few years due to the increasing demand for fl exi...

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Section: Wileyonlinelibrarycommentioning

confidence: 99%

A Highly Stretchable Supercapacitor Using Laser‐Induced Graphene Electrodes onto Elastomeric Substrate

Lamberti

Clerici

Fontana

et al. 2016

Advanced Energy Materials

241

155

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“…Laser induced carbonization from polymer lms was rst demonstrated for the fabrication of high-performance carbon MSCs by using high-power CO 2 infrared pulse lasers and 522 nm pulse lasers. [45][46][47][48][49] Recently, we demonstrated the fabrication of highperformance all-solid-state exible carbon MSCs by laser direct writing on polyimide (PI) lms in air using a relatively low-power compact continuous-wave blue-violet semiconductor laser with a wavelength of 405 nm, the power of which can almost be totally absorbed by the PI lm. 50 We further conducted the similar laser direct writing process on PI lm with only changing the air to inert atmosphere with argon (Ar) gas, resulting in highly increased conductivity, specic surface area, and pore size distribution, thus greatly improved energy and power densities.…”

Section: -31mentioning

confidence: 99%

High-performance all-solid-state flexible carbon/TiO₂micro-supercapacitors with photo-rechargeable capability

Cai

Watanabe

2017

RSC Adv.

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A high-performance all-solid-state flexible interdigitated carbon/TiO 2 micro-supercapacitor (MSC) with photo-rechargeable capability was prepared by combining a laser direct writing technique with electrophoretic deposition of TiO 2 nanoparticles. The carbon/TiO 2 MSC shows the same excellent capacitive performance as the pure carbon MSC, such as high specific capacitance up to 27.3 mF cm À2 at a typical current density of 0.05 mA cm À2, excellent cycling stability, long-time stability, and mechanical stability. Under UV light irradiation, the carbon/TiO 2 MSC can be charged to above 100 mV, and still maintain 60 mV after 10 photo-charging cycles, demonstrating its photo-rechargeable capability. What's more, after 10 photo-charging cycles, the carbon/TiO 2 MSC shows no capacitive performance degradation, which can be attributed to the high structural stability of the carbon/TiO 2 MSC under UV light irradiation.

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“…Further analysis of the irradiated areas using transmission electron microscopy revealed that the laser process liberated carbon monolayers from the PI substrate, creating a porous graphene network on the sample surface. This discovery led to the now widespread use of laser-induced graphene for developing DLW capacitors [20][21][22] and sensors [23].…”

Section: Introductionmentioning

confidence: 99%

Direct laser write process for 3D conductive carbon circuits in polyimide

2017

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Direct laser writing (DLW) is a versatile materials processing technique often applied to device prototyping. However, a fast and cost effective DLW process for fabricating three-dimensional (3D) conductor-insulator composites has yet to be demonstrated. In this work, polyimide (PI) is established as a viable platform for creating 3D graphitic circuits through ultrafast DLW. Under optimized processing conditions, graphitic material with a resistivity of 6 Ω·cm was formed in the laser irradiated regions. A thermal and microstructural material model is proposed for the non-linear DLW process and its graphitic products. The process is demonstrated to be an inexpensive and rapid technique for creating electrical contacts to nanoscale components. Future applications of the technique range from nanowire power generation to 3D integrated photonic and electronic devices.0a The

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Flexible Boron-Doped Laser-Induced Graphene Microsupercapacitors

Cited by 607 publications

References 55 publications

A Highly Stretchable Supercapacitor Using Laser‐Induced Graphene Electrodes onto Elastomeric Substrate

A Highly Stretchable Supercapacitor Using Laser‐Induced Graphene Electrodes onto Elastomeric Substrate

High-performance all-solid-state flexible carbon/TiO₂micro-supercapacitors with photo-rechargeable capability

Direct laser write process for 3D conductive carbon circuits in polyimide

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Flexible Boron-Doped Laser-Induced Graphene Microsupercapacitors

Cited by 607 publications

References 55 publications

A Highly Stretchable Supercapacitor Using Laser‐Induced Graphene Electrodes onto Elastomeric Substrate

A Highly Stretchable Supercapacitor Using Laser‐Induced Graphene Electrodes onto Elastomeric Substrate

High-performance all-solid-state flexible carbon/TiO2micro-supercapacitors with photo-rechargeable capability

Direct laser write process for 3D conductive carbon circuits in polyimide

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Product

Resources

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High-performance all-solid-state flexible carbon/TiO₂micro-supercapacitors with photo-rechargeable capability