Preparation of conductive carbon films from polyacrylonitrile/graphene oxide composite films by thermal treatment

Baek, Ga Young; Lee, Hwa Su; Jung, Jin-Mook; Hwang, In-Tae; Shin, Junhwa; Jung, Chan-Hee; Choi, Jae‐Hak

doi:10.1016/j.jiec.2017.09.011

Cited by 37 publications

(13 citation statements)

References 36 publications

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“…As shown in Figure b, a closer investigation of the deconvoluted C 1s spectra for pristine PAN shows characteristic bonding structures which would reveal the chemical bonding with pristine PAN systems. The pristine PAN fiber is composed of C–C and CN bonds, which are characterized by the peaks situated at 286.8 and 287.3 eV, respectively . With pristine GO, the detailed C 1s spectra shown in Figure c demonstrate the existence of C–C, C–O, and CO bonds which are represented by the characteristic peaks at 283.7, 285.8, and 286.2 eV .…”

Section: Resultsmentioning

confidence: 96%

Hierarchically Structured Nitrogen-Doped Multilayer Reduced Graphene Oxide for Flexible Intercalated Supercapacitor Electrodes

Shi

Jang

Reza-Ugalde

et al. 2020

ACS Appl. Energy Mater.

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Intercalated flexible electrodes for energy storage devices have drawn significant research interests as they can provide high energy densities for powering electronics without sacrificing the overall flexibility. Herein, we report an intercalated reduced graphene oxide/polyacrylonitrile (rGO/PAN) flexible supercapacitor electrode fabricated via a layer-by-layer wet electrospinning (LLwES) process with diluted graphene oxide (GO) solution as the coagulation liquid and subsequent thermal reduction treatment. It was observed that a thin GO film was established on individual PAN nanofiber layer after the wet electrospinning process, while the subsequent thermal reduction of GO led to simultaneous stabilization of the PAN fibers and the creation of an interesting three-dimensional hierarchical carbon nanostructure suitable for flexible, high-performance electrochemical capacitor (EC) electrodes. The formation of gases during the thermal treatment expanded the electrospun PAN fiber layers and resulted in the formation of intercalated nitrogen-doped porosities. The resulting LLwES rGO/PAN system, thermally treated in a nitrogen atmosphere, demonstrated exceptional double-layer capacitance of 221 F/g at 10 mV/s, a controllable electrical conductivity of 125 S/m, and a stable cycling performance retaining a slightly increased capacitance after 10000 cycles.

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Section: Resultsmentioning

confidence: 96%

Hierarchically Structured Nitrogen-Doped Multilayer Reduced Graphene Oxide for Flexible Intercalated Supercapacitor Electrodes

Shi

Jang

Reza-Ugalde

et al. 2020

ACS Appl. Energy Mater.

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“…After EBI (EBI‐PPBs), the content of O atoms increased to 6.38% due to surface oxidation during EBI under ambient conditions. After stabilization (S‐EBI‐PPBs and TS‐PPBs), the content of O atoms significantly increased due to thermal oxidation during stabilization 25 . After carbonization (C‐S‐EBI‐PCBs and C‐TS‐PCBs), the content of C atoms increased, while the contents of O and N atoms decreased.…”

Section: Resultsmentioning

confidence: 99%

“…After stabilization (S-EBI-PPBs and TS-PPBs), the content of O atoms significantly increased due to thermal oxidation during stabilization. 25 After carbonization (C-S-EBI-PCBs and C-TS-PCBs), the content of C atoms increased, while The XPS C1s narrow spectra were analyzed to investigate the chemical structures. The C1s narrow spectra of the PPBs showed the characteristic peaks for C N (286.2 eV) and C C (285.2 eV), respectively (Figure 3).…”

Section: Preparation Of Pcbsmentioning

confidence: 99%

Facile fabrication of polyacrylonitrile‐derived porous carbon beads via electron beam irradiation as anode materials for Li‐ion batteries

et al. 2021

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In this study, porous carbon beads (PCBs) as an anode material for Li-ion batteries (LiBs) were prepared from polyacrylonitrile (PAN) via electron beam irradiation (EBI). Porous PAN beads (PPBs) were irradiated with electron beams, stabilized under the optimized conditions, and finally carbonized to produce PCBs. EBI was introduced to shorten the conventional thermal stabilization. The results of N 2 physisorption measurement revealed that the PCBs had hierarchical pore structures. The PCB-based anodes exhibited an initial reversible capacity of 387 mAh g −1 at 0.2 C and a high capacity retention of 83.2% after 200 cycles. Therefore, the PCBs prepared via EBI are promising anode material for LiBs.

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“…3). Survey spectra shows three core level peaks of C 1 s, N 1 s and O 1 s obtained from PAN-nfs and PAN-TiO 2 [46][47][48]. A small extra peak was detected on PAN-TiO 2 sample at 457 eV and 463 eV which correspond to the Ti 2p3/2 and Ti 2p1/2 with a spin orbit splitting of ~ 6 eV (Fig.…”

Section: Characterization Of Pan-nfs and Pan-tio2mentioning

confidence: 94%

Photocatalytic and antifouling properties of electrospun TiO2 polyacrylonitrile composite nanofibers under visible light

Bode-Aluko

Pereao

Kyaw

et al. 2021

Materials Science and Engineering: B

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Polyacrylonitrile and its TiO 2 composites were electrospun into nanofibers in N, N'-dimethylformamide for photocatalysis and antifouling experiments. The resultants nanofibers were characterized using field emission scanning microscope, Fourier transform infrared spectroscopy, x-ray diffraction, x-ray photoelectron spectroscopy and contact angle analyses. Fourier transform infrared spectroscopy confirmed the formation of polyacrylonitrile-TiO 2 composite nanofibers with their diameter ranging from 10 to 340 nm. The x-ray photoelectron spectroscopy results indicate the formation of O-Ti-C bonds on polyacrylonitrile-TiO 2 matrix. polyacrylonitrile-TiO 2 and polyacrylonitrile nanofiber surfaces showed superhydrophobicity with water contact angle of 155 ± 1 and 154 ± 1, respectively at 120 s. The photocatalytic properties of polyacrylonitrile nanofibers and polyacrylonitrile-TiO 2 nanofibers were investigated under a simulated visible light source of 1000 W/m 2 using methylene blue. About 90% of methylene blue was degraded within 3 h of exposure using polyacrylonitrile-TiO 2 nanofibers while 55% methylene blue degradation was achieved for polyacrylonitrile nanofibers. Photoluminescence experiment conducted on both materials showed that polyacrylonitrile-TiO 2 could produce OH radicals 10-fold compared to polyacrylonitrile nanofibers. Antimicrobial tests were conducted using E. coli and Bacillus sp. The results showed that only polyacrylonitrile-TiO 2 under visible light hindered the growth of these bacteria with a greater effect on the Gram-positive bacterium, Bacillus sp. The photo-degradation and microbial growth inhibition properties of polyacrylonitrile-TiO 2 showed that the material could be used as an antifouling material under visible light.

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Preparation of conductive carbon films from polyacrylonitrile/graphene oxide composite films by thermal treatment

Cited by 37 publications

References 36 publications

Hierarchically Structured Nitrogen-Doped Multilayer Reduced Graphene Oxide for Flexible Intercalated Supercapacitor Electrodes

Hierarchically Structured Nitrogen-Doped Multilayer Reduced Graphene Oxide for Flexible Intercalated Supercapacitor Electrodes

Facile fabrication of polyacrylonitrile‐derived porous carbon beads via electron beam irradiation as anode materials for Li‐ion batteries

Photocatalytic and antifouling properties of electrospun TiO2 polyacrylonitrile composite nanofibers under visible light

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