Rapid and low-cost laser synthesis of hierarchically porous graphene materials as high-performance electrodes for supercapacitors

Wang, Fangcheng; Mei, Xuesong; Wang, Kedian; Dong, Xia; Gao, Meng; Zhai, Zhen; Lv, Jing; Zhu, Chenguang; Duan, Wenqiang; Wang, Wenjun

doi:10.1007/s10853-018-03247-0

Cited by 25 publications

(42 citation statements)

References 37 publications

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“…Figure a1–a5 and b1–b5 shows the FE-SEM images of GO and GO@PANI nanocomposite reduced by laser at different scales, respectively. It is observed that similar to the previous reports, , the ablated porous structure with continuous interconnected framework are formed in all samples. This is because the laser beam provides localized high temperature that causes chemical bond cleavage and sublimation of atoms to recombine into gaseous products, which lead to hydrodynamic drainage and porous structures .…”

Section: Resultssupporting

confidence: 90%

One-Step Fabrication of Flexible, Cost/Time Effective, and High Energy Storage Reduced Graphene Oxide@PANI Supercapacitor

Laelabadi

Moradian

Manouchehri

2020

ACS Appl. Energy Mater.

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The advances in micro-size and in-plane supercapacitors lead to produce the miniaturizing energy storage devices in portable and bendable electronics. Micro-supercapacitors have the unique electrochemical performance, such as high power density, fast charging, long cycle life and high safety. The reduction time and cost in fabrication processes of micro supercapacitors are important factors in micro-fabrication technology. In this work, a simple, scalable and cost-effective fabrication of interdigitated reduced graphene oxide@polyaniline flexible micro supercapacitors is presented. We found that in fabricating the interdigitated micro electrode patterns on PET substrate; the reduction of graphene oxide and growth of conducting polymer are rapidly performed simultaneously in one step by laser irradiation. The capacitance was 72 mF/cm 2 at 35µA/cm 2 current density. These highly capacitance micro supercapacitors demonstrate good stability and more than 93.5% of the capacitance retain after 1000 cycles at 0.7 mA/cm 2 current density.

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Section: Resultssupporting

confidence: 90%

One-Step Fabrication of Flexible, Cost/Time Effective, and High Energy Storage Reduced Graphene Oxide@PANI Supercapacitor

Laelabadi

Moradian

Manouchehri

2020

ACS Appl. Energy Mater.

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“…At discharge current of 0.5 mAcm -2 , the specific capacitance was 5 56.6 mFcm -2 and 9 mFcm -2 at 10 mAcm -2 . The LIG device 6 performance exhibited a high specific capacitance in 7 comparison to previously reported graphene-based SCs (Table 8 1) [19,48,49,50,51].…”

mentioning

confidence: 74%

“…Due to their large surface area, good electrical conductivity, porosity and excellent chemical stability, carbon-based materials are considered as promising candidates for energy storage applications [5]. Graphene as an interesting member of the carbon materials family has attracted great attention for supercapacitor applications due to its optimum physical and chemical properties, which includes its non-toxicity, 19 controllability and versatility [6,7,8,9,10]. Graphene and 20 reduced graphene oxide have been widely applied for 21 supercapacitor applications [11,12,13.14].…”

Section: Introductionmentioning

confidence: 99%

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High Performance Supercapacitor Based on Laser Induced Graphene for Wearable Devices

et al. 2020

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To ensure maximum comfort for the wearer, electronic components that include energy harvesters need to be mechanically conformable. In this context, we demonstrate a versatile, cost-effective and efficient method for fabricating graphene supercapacitor electrodes using Laser Induced Graphene (LIG). A CO2 laser beam instantly transforms the irradiated polyethersulfone polymer (PES) into a highly porous carbon structure. The LIG method was used to deposit graphene layers on graphite sheets to produce the supercapacitor electrodes. Graphene formation and morphology were examined and confirmed using several techniques including Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX) spectroscopy, Raman Spectroscopy and Fourier transform infrared spectroscopy (FTIR). Moreover, the electrochemical characterization was performed in different electrolytes (NaOH and KOH). At 5 mV s -1 , the LIG electrode achieved 165 mF cm -2 and 250 mF cm -2 in NaOH and KOH electrolytes, respectively. Consequently, we show that a wearable symmetric supercapacitor device with LIG electrodes achieved 98.5 mF cm -2 at 5 mV s -1 in KOH electrolyte. The device demonstrated an energy density of 11.3 µWh.cm -2 with power density of 0.33 mWcm -2 at 0.5 mA cm -2 . The retention of capacitance was 75% after 2000 cycles, with outstanding performance for the comparable graphene-based electrodes. These results further validate the use of LIG for developing flexible energy harvesters for wearable applications.

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“…[111][112][113] This method is environmentally friendly and likely to be cost-effective as compared to other Other reported methods such as the sol-gel technique have been used to prepare porous graphene aerogel for capacitor application 116 and laser engraving was implemented to create 3D hierarchically porous graphene for supercapacitor electrode application. 117 The combustion method is another approach employed to fabricate porous graphene from GO. 118 A bottomup strategy was devised by Moreno et al to create nanoporous graphene, which showed semiconducting and nanosieving functionalities.…”

Section: Other Promising Synthesis Routes To Fabricate Hgmentioning

confidence: 99%

Synthesis of holey graphene for advanced nanotechnological applications

et al. 2021

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Rapid and low-cost laser synthesis of hierarchically porous graphene materials as high-performance electrodes for supercapacitors

Cited by 25 publications

References 37 publications

One-Step Fabrication of Flexible, Cost/Time Effective, and High Energy Storage Reduced Graphene Oxide@PANI Supercapacitor

One-Step Fabrication of Flexible, Cost/Time Effective, and High Energy Storage Reduced Graphene Oxide@PANI Supercapacitor

High Performance Supercapacitor Based on Laser Induced Graphene for Wearable Devices

Synthesis of holey graphene for advanced nanotechnological applications

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