All-Solid-State Flexible Supercapacitors Based on Highly Dispersed Polypyrrole Nanowire and Reduced Graphene Oxide Composites

Yu, Chenfei; Ma, Peipei; Zhou, Xi; Wang, Anqi; Qian, Tao; Wu, Shishan; Chen, Qiang

doi:10.1021/am5059603

Cited by 80 publications

(46 citation statements)

References 44 publications

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“…[44][45][46][47] The formation of sp 3 bonds in the graphene moiety might cause low electrical conductivity. [44][45][46][47][48][49][50] In the case of GO, the I D /I G ratio was found to be 1.10, whereas for RGO and SAC-RGO it was 0.92 and 0.97, respectively. In contrast, G and D bands appeared at 1590 and 1349 cm À1 , respectively for SAC-RGO.…”

Section: Resultsmentioning

confidence: 92%

“…1). 50,52 Also at high scan rates slight shiing of the anodic and cathodic peaks towards the positive and negative potential region suggested a quasi-irreversible nature of the redox reactions provided by the SAC-RGO composite. 7(a)) of SAC-RGO with a huge amount of wrinkles; implying signicant exfoliation of GO sheets during surface modication.…”

Section: Resultsmentioning

confidence: 98%

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Non-covalent functionalization of reduced graphene oxide using sulfanilic acid azocromotrop and its application as a supercapacitor electrode material

et al. 2015

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Sulfanilic acid azocromotrop (SAC) modified reduced graphene oxide (SAC-RGO) was prepared by simple non-covalent functionalization of graphene oxide (GO) followed by post reduction using hydrazine monohydrate. Spectral analysis (Fourier transform infrared, Raman and X-ray photoelectron spectroscopy) revealed that successful modification had occurred of GO with SAC through p-p interaction. The electrical conductivity of SAC-RGO was found to be $551 S m À1 . The capacitive performance of SAC-RGO was recorded using a three electrode set up with 1 (M) aqueous H 2 SO 4 as the electrolyte. The -SO 3 H functionalities of SAC contributed pseudocapacitance as evidenced from the redox peaks (at $0.43 and 0.27 V) present in the cyclic voltammetric (CV) curves measured for SAC-RGO. The contribution of electrical double layer capacitance was evidenced from the near rectangular shaped CV curves and resulted in a high specific capacitance of 366 F g À1 at a current density of 1.2 A g À1 for SAC-RGO electrode. An asymmetric device (SAC-RGO//RGO) was designed with SAC-RGO as the positive electrode and RGO as the negative electrode. The device showed an energy density of $25.8 W h kg À1 at a power density of $980 W kg À1 . The asymmetric device showed retention in specific capacitance of $72% after 5000 charge-discharge cycles. The Nyquist data of the device was fitted with Z-view and different components (solution resistance, charge-transfer resistance and Warburg elements) were calculated from the fitted curves.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 98%

Non-covalent functionalization of reduced graphene oxide using sulfanilic acid azocromotrop and its application as a supercapacitor electrode material

et al. 2015

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“…Different carbon structures including onion-like carbon, carbide-derived carbon, carbon nanotubes have been used for electrical double layer capacitors (EDLCs), while conductive polymers such as polyaniline (PANI) and polypyrrole have been used for pseudocapacitors [8,9,[16][17][18][19]. Graphene, an sp 2 hybridized hexagonal carbon form, has been regarded as an excellent electrode material for EDLCs owing to its superior charge carrier mobility, mechanical strength and large surface area [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Water-dispersible graphene/polyaniline composites for flexible micro-supercapacitors with high energy densities

et al. 2015

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“…[23] It is noticed that the existence of the characteristic peak of À N + at a BE of 401.0 eV indicated the PPy component in the oxidized state. [24,25] Both of the Raman and XPS analysis demonstrates the successful polymerization of PPy.…”

Section: Resultsmentioning

confidence: 96%

A Porous and Interconnected Polypyrrole Film with High Conductivity and Ion Accessibility as Electrode for Flexible All‐Solid‐State Supercapacitors

et al. 2019

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Nanoporous electrodes with high electrical conductivity and good mechanical properties are attractive for high-performance flexible supercapacitors. In this work, we report a flexible polypyrrole (PPy) film electrode synthesized by a modified versatile vapor-phase polymerization (VPP) strategy. Differing from conventional VPP protocols that are likely to form smooth polymer films, it could easily engineer the PPy film with porous and interconnected structure by simply optimizing the concentration of oxidant and the polymerization time. The film electrode showed an exceptionally high electrical conductivity up to 94 S cm À 1 . The unique porous PPy films constructed by interconnected electronic/ionic conductive networks achieved a specific capacitance of 494 F g À 1 (corresponding to 836 mF cm À 2 ) at a current density of 1 A g À 1 . The fabricated all-solid-state supercapacitor device with the PPy electrodes exhibited a specific capacitance of 300 F g À 1 at 1 A g À 1 and a high energy density of 26.67 kW kg À 1 . The high electrochemical performance and outstanding mechanical properties present the film electrode promising potential for flexible energy devices in various applications.

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All-Solid-State Flexible Supercapacitors Based on Highly Dispersed Polypyrrole Nanowire and Reduced Graphene Oxide Composites

Cited by 80 publications

References 44 publications

Non-covalent functionalization of reduced graphene oxide using sulfanilic acid azocromotrop and its application as a supercapacitor electrode material

Non-covalent functionalization of reduced graphene oxide using sulfanilic acid azocromotrop and its application as a supercapacitor electrode material

Water-dispersible graphene/polyaniline composites for flexible micro-supercapacitors with high energy densities

A Porous and Interconnected Polypyrrole Film with High Conductivity and Ion Accessibility as Electrode for Flexible All‐Solid‐State Supercapacitors

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