One-step laser direct writing of boron-doped electrolyte as all-solid-state microsupercapacitors

Mu, Xuemei; Du, Jingwei; Li, Yan; Bai, Hao; Zhao, Hao; Wei, Zhiming; Huang, Baoyu; Sheng, Yingzhuo; Zhang, Zhenxing; Xie, Erqing

doi:10.1016/j.carbon.2018.12.039

Cited by 33 publications

(15 citation statements)

References 42 publications

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“…The value of the areal capacitance of G‐CNT‐X devices is much better than that of the reported graphene‐based and/or CNT‐based MSCs, especially considering the precondition of current collectors free in our system (Table S1, Supporting Information). [ 10,25,39,49–64 ] The volumetric capacitance of the devices is also calculated based on the thickness of the electrodes of G‐CNT‐X devices and is plotted in Figure S19, Supporting Information, which is also sound in value.…”

Section: Resultsmentioning

confidence: 99%

Direct Graphene‐Carbon Nanotube Composite Ink Writing All‐Solid‐State Flexible Microsupercapacitors with High Areal Energy Density

Wang

Zhang

Wang

et al. 2020

Adv Funct Materials

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The advancement of miniaturized electronic devices requires the development of high-performance microsupercapacitors. The low areal energy density of microsupercapacitors with the interdigitated architecture is the major challenge hindering the application. Here, a simple method for the scalable fabrication of all-solid-state, flexible microsupercapacitors is demonstrated by direct graphene-carbon nanotube composite ink writing technology. The microsupercapacitors demonstrate good electrochemical performance with a high areal energy density of 1.36 µWh cm -2 and power density of 0.25 mW cm -2 , good cycling stability, and excellent mechanical flexibility. The method developed here sheds light on the simple method of preparing high-performance, all-solid-state, flexible microsupercapacitors in a straightforward and scalable process.

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Section: Resultsmentioning

confidence: 99%

Direct Graphene‐Carbon Nanotube Composite Ink Writing All‐Solid‐State Flexible Microsupercapacitors with High Areal Energy Density

Wang

Zhang

Wang

et al. 2020

Adv Funct Materials

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“…As mentioned above, laser-pyrolyzed carbon can be easily patterned in a microscale based on laser direct writing. Many studies have demonstrated the use of this technique to fabricate microsupercapacitors [ 21 , 22 , 23 , 24 ]. The produced carbon exhibited a promising electrochemical performance [ 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Laser Pyrolysis of Imprinted Furan Pattern for the Precise Fabrication of Microsupercapacitor Electrodes

et al. 2020

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The design or dimension of micro-supercapacitor electrodes is an important factor that determines their performance. In this study, a microsupercapacitor was precisely fabricated on a silicon substrate by irradiating an imprinted furan micropattern with a CO2 laser beam under ambient conditions. Since furan is a carbon-abundant polymer, electrically conductive and porous carbon structures were produced by laser-induced pyrolysis. While the pyrolysis of a furan film in a general electric furnace resulted in severe cracks and delamination, the laser pyrolysis method proposed herein yielded porous carbon films without cracks or delamination. Moreover, as the imprinting process already designated the furan area for laser pyrolysis, high-precision patterning was achieved in the subsequent laser pyrolysis step. This two-step process exploited the superior resolution of imprinting for the fabrication of a laser-pyrolyzed carbon micropattern. As a result, the technical limitations of conventional laser direct writing could be overcome. The laser-pyrolyzed carbon structure was employed for microsupercapacitor electrodes. The microsupercapacitor showed a specific capacitance of 0.92 mF/cm2 at 1 mA/cm2 with a PVA-H2SO4 gel electrolyte, and retained an up to 88% capacitance after 10,000 charging/discharging cycles.

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“…For example, Zhang's team demonstrated a direct laser writing (460 nm laser) method to prepare carbonized nanofiberbased MSCs, which displayed an initial specific capacitance of 4 mF cm À2 and excellent cycling stability with a retention of 180% after 7600 cycles [192]. Furthermore, Mu et al developed an easier and more ingenious strategy for carbon-based MSCs fabrication, in which the symmetric MSC was fabricated through only a one-step carbonization of the solid-state electrolyte (boron-doped PVA/ H 2 SO 4 electrolyte) with laser direct writing (406 nm semiconductor laser at 0.78 W) [193]. Afterwards, the interdigitated crosslinked porous carbon fiber microelectrodes (Fig.…”

Section: Laser Carbonizationmentioning

confidence: 99%

“…In addition to the commonly used PI substrate, some other substrates have also been attempted to prepare LIG, which provides wide material source for MSCs fabrication via LIG technology. Available substrates include carbon nanospheres [201], wood [202], lignin films [203], polyether ether ketone (PEEK) [204], polyetherimide [205], polysulfone (PSU) [206], cross-linked polystyrene (PS) and [193]. Copyright 2018, Elsevier.…”

Section: Laser Induced Graphenementioning

confidence: 99%

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Laser fabrication of functional micro-supercapacitors

Wang

Yang

2021

Journal of Energy Chemistry

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One-step laser direct writing of boron-doped electrolyte as all-solid-state microsupercapacitors

Cited by 33 publications

References 42 publications

Direct Graphene‐Carbon Nanotube Composite Ink Writing All‐Solid‐State Flexible Microsupercapacitors with High Areal Energy Density

Direct Graphene‐Carbon Nanotube Composite Ink Writing All‐Solid‐State Flexible Microsupercapacitors with High Areal Energy Density

Laser Pyrolysis of Imprinted Furan Pattern for the Precise Fabrication of Microsupercapacitor Electrodes

Laser fabrication of functional micro-supercapacitors

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