Graphene oxide doped polyaniline for supercapacitors

Wang, Hualan; Hao, Qingli; Yang, Xin; Lu, Lude; Wang, Xin

doi:10.1016/j.elecom.2009.03.036

Cited by 779 publications

(333 citation statements)

References 18 publications

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“…65 Wang et al used GO sheets as the substrate for growing PANI. 79 The PANI grown on GO sheets has a fibril morphology with diameters around 300 nm, whereas pure PANI synthesized in the system without GO is a granular aggregate. Although GO has poor electrical conductivity, the GO-doped PANI had a conductivity of 10 S cm À1 , higher than that of pristine PANI (2 S cm À1 ).…”

Section: Graphene/pani Compositesmentioning

confidence: 99%

“…79,80 Different from the powdery products prepared through chemical approaches, electrochemical polymerization yields mechanically stable composite films and they can be directly used as the electrodes of energy storage devices. Furthermore, electrochemical polymerization can be precisely controlled by the applied potential, current density, and polymerization time.…”

Section: Noncovalent Strategiesmentioning

confidence: 99%

See 1 more Smart Citation

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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Section: Graphene/pani Compositesmentioning

confidence: 99%

Section: Noncovalent Strategiesmentioning

confidence: 99%

Graphene/polymer composites for energy applications

Sun

Shi

2012

J Polym Sci B Polym Phys

236

120

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show abstract

“…Various materials have been investigated as the electrodes in ECs, including carboneous materials, 2-4 conducting polymers 5,6 and transition-metal oxides. 7,8 MnO 2 is generally considered to be the most promising transition metal oxides for the next generation of supercapacitors because of its high-energy density, low cost, environmental friendliness, and natural abundance.…”

Section: Abstract Mno 2; Ffwnts Pedot-pss Supercapacitor Effectivementioning

confidence: 99%

Design and Synthesis of Hierarchical MnO₂ Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes

Hou

Cheng

Hobson³

et al. 2010

Nano Lett.

908

562

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For efficient use of metal oxides, such as MnO 2 and RuO 2 , in pseudocapacitors and other electrochemical applications, the poor conductivity of the metal oxide is a major problem. To tackle the problem, we have designed a ternary nanocomposite film composed of metal oxide (MnO 2 ), carbon nanotube (CNT), and conducting polymer (CP). Each component in the MnO 2 /CNT/CP film provides unique and critical function to achieve optimized electrochemical properties. The electrochemical performance of the film is evaluated by cyclic voltammetry, and constant-current charge/discharge cycling techniques. Specific capacitance (SC) of the ternary composite electrode can reach 427 F/g. Even at high mass loading and high concentration of MnO 2 (60%), the film still showed SC value as high as 200 F/g. The electrode also exhibited excellent charge/discharge rate and good cycling stability, retaining over 99% of its initial charge after 1000 cycles. The results demonstrated that MnO 2 is effectively utilized with assistance of other components (fFWNTs and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) in the electrode. Such ternary composite is very promising for the next generation high performance electrochemical supercapacitors. KEYWORDS MnO 2; fFWNTs, PEDOT-PSS, supercapacitor, effective utilization.A s the limited availability of fossil fuel and the environmental impacts of a society based on such energy sources becoming more obvious, the need for renewable energy sources has attracted attentions of the world. Systems for electrochemical energy storage and conversion include batteries, fuel cells, and supercapacitors. Among them, supercapacitors, also known as electrical double layer capacitor, ultracapacitor, or electrochemical capacitor (EC), have attracted much attention because of their high power density, long cycle life (>100 000 cycles), and rapid charging-discharging rates.1 They can be applied in a large variety of applications, including consumer electronics, memory back-up systems, industrial power, energy management, public transportation, and military devices. More importantly, supercapacitors are critical components in the next generation all-electric cars and cars based on fuel cells that use hydrogen or alcohol as clean and renewable energy media.Various materials have been investigated as the electrodes in ECs, including carboneous materials, 2-4 conducting polymers 5,6 and transition-metal oxides. 7,8 MnO 2 is generally considered to be the most promising transition metal oxides for the next generation of supercapacitors because of its high-energy density, low cost, environmental friendliness, and natural abundance. 9,10The published results thus far established that the electrochemical performance of MnO 2 depended on their morphology, porosity, specific surface area, electrical conductivity and ionic transport within the pores. 11,12 In this context, layered mesoporous birnessite-type manganese oxide materials are attracting great interest due to their high surface area, low density, a...

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“…They have found that the sheet resistance reached 300Ω/m with 96.4% transparency. Very recently, a simple and practical solution-casting method has been used to prepare the graphene-based electrodes [22,23,32,34,37,47].…”

Section: Introducationmentioning

confidence: 99%

“…However, sustainability and price concerns give the need to be replaced for new transparent conductive materials with a high mechanical flexible material but low cost one [25]. Thus, there are daily efforts to fabricate transparent, conductive and flexible graphenebased material electrodes (TEs) and field effect transistors electrodes (FETs) [18][19][20][21][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40].…”

Section: Introducationmentioning

confidence: 99%

An experimental study of nonlinear behaviour of capacitance in graphene/carbon nanotube hybrid films

Alsawafi

Wang

Jin

et al. 2016

Eur. Phys. J. Appl. Phys.

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Graphene oxide doped polyaniline for supercapacitors

Cited by 779 publications

References 18 publications

Graphene/polymer composites for energy applications

Graphene/polymer composites for energy applications

Design and Synthesis of Hierarchical MnO₂ Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes

An experimental study of nonlinear behaviour of capacitance in graphene/carbon nanotube hybrid films

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Graphene oxide doped polyaniline for supercapacitors

Cited by 779 publications

References 18 publications

Graphene/polymer composites for energy applications

Graphene/polymer composites for energy applications

Design and Synthesis of Hierarchical MnO2 Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes

An experimental study of nonlinear behaviour of capacitance in graphene/carbon nanotube hybrid films

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Design and Synthesis of Hierarchical MnO₂ Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes