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Flexible conducting polymer/reduced graphene oxide films: synthesis, characterization, and electrochemical performance.

Yang W, Zhao Y, He X, Chen Y, Xu J, Li S, Yang Y, Jiang Y - Nanoscale Res Lett (2015)

Bottom Line: The results indicate that a layer-ordered structure is constructed in this nanocomposite during the vacuum filtering process.The results reveal that a 193.7 F/g highly specific capacitance of nanocomposite film is achieved at a current density of 500 mA/g.This flexible and self-supporting nanocomposite film exhibits excellent cycling stability, and the capacity retention is 90.6 % after 1000 cycles, which shows promising application as high-performance electrode materials for flexible energy-storage devices.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (UESTC), Chengdu, 610054 People's Republic of China.

ABSTRACT
In this paper, we demonstrate the preparation of a flexible poly (3,4-ethylenedioxythiophene) -poly (styrenesulfonate)/reduced graphene oxide (PEDOT-PSS/RGO) film with a layered structure via a simple vacuum filtered method as a high performance electrochemical electrode. The PEDOT-PSS/RGO films are characterized by scanning electron microscopy (SEM), X-ray diffraction, Raman spectroscopy, and Fourier transform infrared (FT-IR) spectrometry. The results indicate that a layer-ordered structure is constructed in this nanocomposite during the vacuum filtering process. The electrochemical performances of the flexible films are characterized by electrochemical impedance spectroscopy, cyclic voltammetry, and galvanostatic charge/discharge. The results reveal that a 193.7 F/g highly specific capacitance of nanocomposite film is achieved at a current density of 500 mA/g. This flexible and self-supporting nanocomposite film exhibits excellent cycling stability, and the capacity retention is 90.6 % after 1000 cycles, which shows promising application as high-performance electrode materials for flexible energy-storage devices.

No MeSH data available.


(a) Raman spectra of pure RGO and PS/RG 1:1 films; (b) FT-IR spectra of RGO, and PS/RG 1:1 films
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Fig2: (a) Raman spectra of pure RGO and PS/RG 1:1 films; (b) FT-IR spectra of RGO, and PS/RG 1:1 films

Mentions: Raman and FT-IR spectroscopy provide powerful tools to further investigate the microstructure of composites. Fig. 2a shows the Raman spectra of pure RGO and PEDOT-PSS/RGO composite films. The Raman spectrum of RGO displays two typical bands centered at 1347 and 1579 cm−1, corresponding to the D-band and G-band, respectively. The D-band indicates the increasing of the sp3 domains and the decrease of the in-plane sp2 domains. The G-band, due to the E2g mode, is closely related to the vibration of sp2-bonded carbon atoms in a 2D graphene layer [23, 24]. The Raman band of PEDOT-PSS/RGO composite films (shown in Fig. 2b) at 985 cm−1 is assigned to oxyethylene ring deformation. The band at 1123 cm−1 is originated from C-O-C deformation. The bands at 1281 and 1363 cm−1 are originated from the Cα-Cα inter-ring and Cβ-Cβ stretch, respectively. The bands at 1432 and 1501 cm−1 are attributed to C = C symmetric stretch. The asymmetric Cα-Cβ bond is evidenced by the presence of band at 1561 cm−1 [23, 25]. The series of bands indicates the successful formation of PEDOT-PSS/RGO nanocomposites.Fig. 2


Flexible conducting polymer/reduced graphene oxide films: synthesis, characterization, and electrochemical performance.

Yang W, Zhao Y, He X, Chen Y, Xu J, Li S, Yang Y, Jiang Y - Nanoscale Res Lett (2015)

(a) Raman spectra of pure RGO and PS/RG 1:1 films; (b) FT-IR spectra of RGO, and PS/RG 1:1 films
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4440868&req=5

Fig2: (a) Raman spectra of pure RGO and PS/RG 1:1 films; (b) FT-IR spectra of RGO, and PS/RG 1:1 films
Mentions: Raman and FT-IR spectroscopy provide powerful tools to further investigate the microstructure of composites. Fig. 2a shows the Raman spectra of pure RGO and PEDOT-PSS/RGO composite films. The Raman spectrum of RGO displays two typical bands centered at 1347 and 1579 cm−1, corresponding to the D-band and G-band, respectively. The D-band indicates the increasing of the sp3 domains and the decrease of the in-plane sp2 domains. The G-band, due to the E2g mode, is closely related to the vibration of sp2-bonded carbon atoms in a 2D graphene layer [23, 24]. The Raman band of PEDOT-PSS/RGO composite films (shown in Fig. 2b) at 985 cm−1 is assigned to oxyethylene ring deformation. The band at 1123 cm−1 is originated from C-O-C deformation. The bands at 1281 and 1363 cm−1 are originated from the Cα-Cα inter-ring and Cβ-Cβ stretch, respectively. The bands at 1432 and 1501 cm−1 are attributed to C = C symmetric stretch. The asymmetric Cα-Cβ bond is evidenced by the presence of band at 1561 cm−1 [23, 25]. The series of bands indicates the successful formation of PEDOT-PSS/RGO nanocomposites.Fig. 2

Bottom Line: The results indicate that a layer-ordered structure is constructed in this nanocomposite during the vacuum filtering process.The results reveal that a 193.7 F/g highly specific capacitance of nanocomposite film is achieved at a current density of 500 mA/g.This flexible and self-supporting nanocomposite film exhibits excellent cycling stability, and the capacity retention is 90.6 % after 1000 cycles, which shows promising application as high-performance electrode materials for flexible energy-storage devices.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (UESTC), Chengdu, 610054 People's Republic of China.

ABSTRACT
In this paper, we demonstrate the preparation of a flexible poly (3,4-ethylenedioxythiophene) -poly (styrenesulfonate)/reduced graphene oxide (PEDOT-PSS/RGO) film with a layered structure via a simple vacuum filtered method as a high performance electrochemical electrode. The PEDOT-PSS/RGO films are characterized by scanning electron microscopy (SEM), X-ray diffraction, Raman spectroscopy, and Fourier transform infrared (FT-IR) spectrometry. The results indicate that a layer-ordered structure is constructed in this nanocomposite during the vacuum filtering process. The electrochemical performances of the flexible films are characterized by electrochemical impedance spectroscopy, cyclic voltammetry, and galvanostatic charge/discharge. The results reveal that a 193.7 F/g highly specific capacitance of nanocomposite film is achieved at a current density of 500 mA/g. This flexible and self-supporting nanocomposite film exhibits excellent cycling stability, and the capacity retention is 90.6 % after 1000 cycles, which shows promising application as high-performance electrode materials for flexible energy-storage devices.

No MeSH data available.