Graphene/polypyrrole intercalating nanocomposites as supercapacitors electrode

Liu, Yun; Wang, Huanhuan; Zhou, Jie; Bian, Linyi; Zhu, Enwei; Hai, Jiefeng; Tang, Jian

doi:10.1016/j.electacta.2013.08.149

Cited by 159 publications

(100 citation statements)

References 39 publications

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“…In a typical self-assembly procedure, 0.2 mL aniline was first injected into 10.0 mL 0.2 g mL À1 GO suspension under ultrasonication [34]. Then, the mixed concentrated hydrochloric acid (HCl) and ammonium persulfate (APS) aqueous solution (10.0 mL) was slowly added to the above suspension under vigorous stirring.…”

Section: Synthesis Of Hierarchical Cu@cuo Linear Heterostructure Withmentioning

confidence: 99%

Design and construction of three-dimensional CuO/polyaniline/rGO ternary hierarchical architectures for high performance supercapacitors

Zhu

et al. 2016

Journal of Power Sources

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Section: Synthesis Of Hierarchical Cu@cuo Linear Heterostructure Withmentioning

confidence: 99%

Design and construction of three-dimensional CuO/polyaniline/rGO ternary hierarchical architectures for high performance supercapacitors

Zhu

et al. 2016

Journal of Power Sources

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“…Meanwhile, the peaks at 1647 cm À1 is due to the C]O group present in the PVP. These results suggested that PPy nanowires are indeed formed on the rGO surface via interaction such as pep stacking between them [30,31]. In the case of rGO-CN, the peaks were observed at 1572, 1486, 1216 and 985 cm À1 , corresponding to C]C stretching, C]N stretching, CeN stretching and CeC stretching, respectively.…”

Section: Resultsmentioning

confidence: 86%

“…The slightly larger interlayer spacing than that of graphite results from the residual oxygen functional groups or other structural defects in the rGO sheets [32]. The pattern of rGO-PPy exhibits a broad diffraction peak at 2 ¼ 24.2 for the calculated d-spacing of 0.37 nm, which indicates the pep stacking distance between PPy and rGO sheets [31]. Furthermore, two peaks about at 43 and 78 almost disappear for rGO-PPy, suggesting that the PPy nanowires and rGO have interacted completely.…”

Section: Resultsmentioning

confidence: 97%

Facile synthesis of graphene/N-doped carbon nanowire composites as an effective electrocatalyst for the oxygen reduction reaction

Kadumudi

Rajagopalan

Chung

et al. 2015

International Journal of Hydrogen Energy

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“…Although the specific capacitance obtained was 466 F g −1 at 10 mV s −1 scan rate in 1 M KCl solution, it showed high energy density (165.7 Wh kg −1 ). Tang et al [79] prepared uniform graphene/PPy nanocomposites by an in situ intercalative chemical polymerization. Such a uniform nanostructure together with the observed high conductivities (the highest 1980 S m −1 ) endowed the graphene/PPy composites with high specific capacitance (650 F g −1 ) and good cycling stability (Figure 4.7a,b).…”

Section: Ppy-graphene Nanocompositementioning

confidence: 99%

Graphene‐Based Nanocomposites for Supercapacitors

Zhang¹,

Xie³

2015

Graphene‐based Energy Devices

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IntroductionSupercapacitors, also called ultracapacitors, as potential electrochemical energy storage devices are applied in a variety of military and commercial applications because of their long cycling lifetime, low maintenance cost, and extraordinarily high power density [1, 2]. A hybrid system combining lithium-ion batteries and supercapacitors has also been attracting the attention of researchers. Supercapacitors can be primary energy devices for power assist during acceleration and hill climbing, as well as for recovery of braking energy. Lithium-ion batteries can provide the energy during cruising. The hybrid system combines the power performance of supercapacitors with the greater energy storage capability of lithium-ion batteries. The hybrid system can also extend the life, downsize the volume, and reduce the cost of batteries.There are two types of supercapacitors (SCs): electric double-layer capacitors (EDLCs) and pseudocapacitors. EDLCs are non-faradaic supercapacitors which store energy using the adsorption of both anions and cations [3,4]. Currently, most of state-of-the-art EDLCs devices are based on high-surface-area carbon [5][6][7][8][9][10][11], such as porous activated carbon (AC). A main issue with AC-based SC electrodes is that the entire surface area is not electrochemically accessible by the electrolyte because of their small micropore size (pore size <2 nm) and hydrophobic graphene-like surface [12,13]. Therefore, carbon has a low surface-area-normalized specific capacitance of 10-40 μF cm −1 [2, 14] The commercial SC based on AC and organic electrolyte has only an energy density of ∼7 Wh kg −1 [15], although its power density can be as high as 10 kW kg −1 as shown in Figure 4.1. Therefore, it is essential to develop novel electrode materials with large accessible specific surface area (SSA) and better electrolyte affinity, contributing to a higher energy density.Unlike EDLCs which store energy through physical adsorption, pseudocapacitive materials [17] store energy through a faradaic process, which involves fast and reversible redox reactions between the electrolyte and electroactive materials on the electrode surface [18]. In principle, the electroactive species, which possess Graphene-based Energy Devices, First Edition. Edited by A. Rashid bin Mohd Yusoff.

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Graphene/polypyrrole intercalating nanocomposites as supercapacitors electrode

Cited by 159 publications

References 39 publications

Design and construction of three-dimensional CuO/polyaniline/rGO ternary hierarchical architectures for high performance supercapacitors

Design and construction of three-dimensional CuO/polyaniline/rGO ternary hierarchical architectures for high performance supercapacitors

Facile synthesis of graphene/N-doped carbon nanowire composites as an effective electrocatalyst for the oxygen reduction reaction

Graphene‐Based Nanocomposites for Supercapacitors

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