Graphene oxide/polypyrrole nanocomposites: one-step electrochemical doping, coating and synergistic effect for energy storage

Zhu, Chengzhou; Zhai, Junfeng; Wen, Dan; Dong, Shaojun

doi:10.1039/c2jm16699b

Cited by 303 publications

(178 citation statements)

References 42 publications

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“…The bands at 1034 and 1294 cm -1 are attributed to the C-H deformation and C-N stretching vibrations, respectively. The strong absorption band at about 1175 cm -1 indicates the doping state of Ppy [2,7]. All of the above peaks can be seen from sample Ppy, GO/Ppy and PRGO/Ppy, confirming the coating of Ppy onto GO and PRGO sheets.…”

Section: Morphology and Structuresupporting

confidence: 51%

“…The bands at 3387 cm -1 and 1412 cm -1 were due to the vibration and deformation of C-OH groups respectively. And the adsorption band at 1053 cm -1 can be assigned to C-O stretching [2,7,[9][10][11]. It can be confirmed that through the chemical oxidization process the oxygen functional groups were attached on the GO sheets successfully.…”

Section: Morphology and Structurementioning

confidence: 49%

“…After partially reduction process, a broad reflection peak centered at 2θ=25.8 º was observed in the XRD pattern of PRGO ( Figure 3A), which can be correlated to an interlayer spacing of 0.35 nm the graphene sample, indicating a loosely packed graphene sheets in PRGO [7][8][9], and it is different from the crystalline graphite. The pure Ppy sample exhibits the most intense peak at 2θ=25.5 º (i.e., d=0.31 nm), which was ascribed to the planar aromatic pyrrole rings [2]. After the coating process, a new broad peak situated at around 23.4º and 24.2 was found for GO/Ppy8 and PRGO/Ppy8, respectively, almost the same as that of pure Ppy as shown in Figure 3B.…”

Section: Morphology and Structurementioning

confidence: 57%

“…However, it suffers from a serious disadvantage of poor cycling stability during the charge-discharge process due to the swelling and shrinkage of the conducting polymer [1,2]. One way to overcome this disadvantage is using a substrate, which serves as a support material for the electrochemical utilization of Ppy and also provides the path for electron transfer.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Soft Template Method to Graphene Oxide Nanosheet/Polypyrrole Nanofibers Hybrid as Supercapacitor Electrode Material

Xu¹,

Yang²,

Jiang³

et al. 2015

Proceedings of the 2015 International Conference on Materials, Environmental and Biological Engineering

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Abstract.A simple and effective method has been used to prepare graphene oxide and/or partially reduced graphene oxide-polypyrrole (GO/Ppy and PRGO/Ppy) composite with sandwich structures by using the soft template method. In the case of GO/Ppy8, a high specific capacitance of 456 F/g at a current density of 2 A/g and the capacitance retention ratio of about 68% when the current density increases from 300 mA/g to 5 A/g were obtained, indicating its potential for use as an electrode material for supercapacitors.

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Section: Morphology and Structuresupporting

confidence: 51%

Section: Morphology and Structurementioning

confidence: 49%

Section: Morphology and Structurementioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Soft Template Method to Graphene Oxide Nanosheet/Polypyrrole Nanofibers Hybrid as Supercapacitor Electrode Material

Xu¹,

Yang²,

Jiang³

et al. 2015

Proceedings of the 2015 International Conference on Materials, Environmental and Biological Engineering

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“…101 In this system, GO served as a weak electrolyte as well as an effective charge-balancing dopant for PPy. The specific capacitance of this film was tested to be 356 F g À1 at a discharge rate of 0.5 A g À1 and this value is 50% higher than that of pure PPy.…”

Section: Graphene/pani Compositesmentioning

confidence: 99%

Graphene/polymer composites for energy applications

Sun

Shi

2012

J Polym Sci B Polym Phys

236

120

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Graphene has wide potential applications in energyrelated systems, mainly because of its unique atom-thick twodimensional structure, high electrical or thermal conductivity, optical transparency, great mechanical strength, inherent flexibility, and huge specific surface area. For this purpose, graphene materials are frequently blended with polymers to form composites, especially when fabricating flexible devices. Graphene/polymer composites have been explored as electrodes of supercapacitors or lithium ion batteries, counter electrodes of dye-sensitized solar cells, transparent conducting electrodes and active layers of organic solar cells, catalytic electrodes, and polymer electrolyte membranes of fuel cells. In this review, we summarize the recent advances on the synthesis and applications of graphene/polymer composites for energy applications. The challenges and prospects in this field have also been discussed. V C 2012 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2013, 51, 231-253 KEYWORDS: composites; energy; fuel cell; graphene; lithium ion battery; redox polymers; solar cell; supercapacitor; synthesis INTRODUCTION Energy is one of the most important recent topics of concern to human society. To replace conventional fossil fuels, clean and renewable energies based on sunlight, wind, new chemicals, and biofuels are urgently demanded. Therefore, materials that can directly convert or store renewable energies are being extensively studied. Among them, graphene has recently attracted a great deal of attention because of its unique atom-thick two-dimensional (2D) structure 1,2 and excellent electrical, 2 thermal, 3 optical, and mechanical properties. 4,5 Graphene is a promising material for applications in various energy-related systems such as supercapacitors, 6-9 secondary batteries, 10-14 solar cells, 15-17 and fuel cells. [18][19][20] For this purpose, graphene materials are frequently blended with polymers to form functional composites. [21][22][23] The polymer component can improve the processability and/or flexibility of graphene materials, and also possibly provide them with new functions. To date, various graphene composites with insulating or conducting polymers (CPs) have been prepared through noncovalent 22 or covalent approaches. 24 They have also been applied as electrodes for supercapacitors and lithium ion batteries (LIBs), 25-29 counter electrodes of dye-sensitized solar cells (DSSCs), 15,30,31 and transparent conducting electrodes (TCEs) 32,33 or active layers of organic solar cells, 34 catalytic electrodes, and polymer electrolyte membranes of fuel cells. [35][36][37] This review focuses on summarizing the recent advances in the synthesis of graphene/polymer composites and their energy applications.

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2017

Cellulose Nanocrystals

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Graphene oxide/polypyrrole nanocomposites: one-step electrochemical doping, coating and synergistic effect for energy storage

Cited by 303 publications

References 42 publications

A Soft Template Method to Graphene Oxide Nanosheet/Polypyrrole Nanofibers Hybrid as Supercapacitor Electrode Material

A Soft Template Method to Graphene Oxide Nanosheet/Polypyrrole Nanofibers Hybrid as Supercapacitor Electrode Material

Graphene/polymer composites for energy applications

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