Development of a 3D graphene aerogel and 3D porous graphene/MnO<sub>2</sub>@polyaniline hybrid film for all-solid-state flexible asymmetric supercapacitors

Ghosh, Kalyan; Yue, Chee Yoon; Sk, Mahasin Alam; Jena, Rajeeb Kumar; Bi, Sheng

doi:10.1039/c7se00433h

Cited by 93 publications

(44 citation statements)

References 53 publications

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“…As shown in the Ragone plots ( Fig. 5f), this performance is better than a few recently reported SCs [52][53][54][55][56][57][58][59][60][61][62][63].…”

Section: Application In Flexible Supercapacitor Devicesmentioning

confidence: 45%

“…6g-i). Finally, two of these as-modified cotton electrodes in parallel are [52], PANI NFs/FrGO [53], RGO/CuO/ PANI [54], CNT/PANI [55], CNF/PANI [56], HPC/PANI [57], PANI/MWCNT [58], RGO/MnO 2 @PANI [59], grapheme//MGC [60], activated carbon//MnO 2 [61], MnO-RGO//FC [62], and activated carbon//NaMnO 2 [63] assembled into a linear SC by wrapping with a suitable amount of solid electrolyte (Fig. 7a).…”

Section: Application In Flexible Supercapacitor Devicesmentioning

confidence: 99%

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Hierarchical Porous RGO/PEDOT/PANI Hybrid for Planar/Linear Supercapacitor with Outstanding Flexibility and Stability

et al. 2020

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HIGHLIGHTS • Hierarchical porous reduced graphene oxide/poly(3,4-ethylenedioxythiophene)/polyaniline hybrid was designed. • The hybrid achieves a high capacitance of 535 F g −1 along with a good rate capability and cyclability. ABSTRACT Many hybrid electrodes for supercapacitors (SCs) are a reckless combination without proper structural design that keeps them from fulfilling their potential. Herein, we design a reduced graphene oxide/poly(3,4-ethylenedioxythiophene)/polyaniline (RGO/PEDOT/PANI) hybrid with hierarchical and porous structure for high-performance SCs, where components fully harness their advantages, forming an interconnected and conductive framework with substantial reactive sites.Thus, this hybrid achieves a high capacitance of 535 F g −1 along with good rate capability and cyclability. The planar SC based on this hybrid deliver an energy density of 26.89 Wh kg −1 at a power density of 800 W kg −1. The linear SC developed via modifying a cotton yarn with the hybrid exhibits good flexibility and structural stability, which operates normally after arbitrary deformations. This work provides a beneficial reference for developing SCs.

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“…As shown in the Ragone plots ( Fig. 5f), this performance is better than a few recently reported SCs [52][53][54][55][56][57][58][59][60][61][62][63].…”

Section: Application In Flexible Supercapacitor Devicesmentioning

confidence: 45%

Section: Application In Flexible Supercapacitor Devicesmentioning

confidence: 99%

Hierarchical Porous RGO/PEDOT/PANI Hybrid for Planar/Linear Supercapacitor with Outstanding Flexibility and Stability

et al. 2020

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“…Graphene or reduced graphene oxide (rGO) is the most studied carbon‐based material for combination with MnO x for supercapacitor electrodes in the past decade . The highly conductive graphene nanosheets can be easily integrated into macroscopic level such as graphene paper, graphene hydrogels, and graphene foam‐based electrodes .…”

Section: Mnox‐based Hybrid Electrodes For Supercapacitorsmentioning

confidence: 99%

Manganese‐Oxide‐Based Electrode Materials for Energy Storage Applications: How Close Are We to the Theoretical Capacitance?

Wang

2018

Advanced Materials

104

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Of the transition metals, Mn has the greatest number of different oxides, most of which have a special tunnel structure that enables bulk redox reactions. The high theoretical capacitance and capacity results from a greater number of accessible oxidation states than other transition metals, wide potential window, and the high natural abundance make MnO species promising electrode materials for energy storage applications. Although MnO electrode materials have been intensely studied over the past decade, their electrochemical performance is still insufficient for practical applications. Currently, there is a trade-off between specific capacitance and loading mass. MnO species have intrinsically poor electrical conductivity, and current structural designs are not sophisticated enough to accommodate enough redox-active sites. Recent studies have certainly made progress in increasing capacitance through making use of electrically conductive components and controlling the morphology of the MnO species to expose more surface area. To increase the capacitance of MnO electrodes to the largest extent without limiting loading mass, further structural design at the nanoscale and manipulation of the electrically conductive component are required. An ideal nanostructure is proposed to guide future research toward closing the gap between achieved and theoretical capacitance, without limiting the loading mass.

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“…Generally, low capacitive retention observed at high current is attributed to non‐utilization of the full active material due to fast the charging/ discharging processes. This has been usually reported ,. The usually reported specific capacitance of the graphene electrode is less than 400 F g −1 , while for the MnO 2 is in the range of 100–600 F g −1 .…”

Section: Resultsmentioning

confidence: 61%

Disposed Dry Cells as Sustainable Source for Generation of Few Layers of Graphene and Manganese Oxide for Solid‐State Symmetric and Asymmetric Supercapacitor Applications

2018

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Recycling electronic wastes (e‐wastes) is one of the steps to build greener and cleaner environment. In this work, re‐using of disposed dry cell (zinc‐carbon battery) components to generate graphene and manganese oxide for energy storage application has been demonstrated. The obtained materials have been characterized by X‐ray diffraction, Fourier transformed infrared spectroscopy, Raman spectroscopy and scanning electron microscope. The electrochemical performances of the generated graphene and the MnO2 have been examined in 1M H2SO4. The symmetric (MnO2|PVA:H2SO4|MnO2) and asymmetric (Graphene|PVA:H2SO4|MnO2) supercapacitors were fabricated and their performances were evaluated. The fabricated proto‐type asymmetric device delivered energy density as high as 68 W h kg‐1 at power density of 8010 W kg‐1 with a wide operating potential up to 1.6 V. The device had a long life of 5000 cycles with high Coulombic efficiency as high as 90 %. The observed such an excellent electrochemical performances are attributed to the large surface area and high conductivity of the graphene nanonetwork and nanoporous MnO2 extracted from the disposed dry cell. The two asymmetric proto‐type devices connected in series could light an LED for about 10 min in one charge.

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Development of a 3D graphene aerogel and 3D porous graphene/MnO₂@polyaniline hybrid film for all-solid-state flexible asymmetric supercapacitors

Abstract: A porous 3D RGO/MnO2@PANI hybrid film and a 3D graphene aerogel were developed to fabricate a high-performance all-solid-state flexible asymmetric supercapacitor.

Cited by 93 publications

References 53 publications

Hierarchical Porous RGO/PEDOT/PANI Hybrid for Planar/Linear Supercapacitor with Outstanding Flexibility and Stability

Hierarchical Porous RGO/PEDOT/PANI Hybrid for Planar/Linear Supercapacitor with Outstanding Flexibility and Stability

Manganese‐Oxide‐Based Electrode Materials for Energy Storage Applications: How Close Are We to the Theoretical Capacitance?

Disposed Dry Cells as Sustainable Source for Generation of Few Layers of Graphene and Manganese Oxide for Solid‐State Symmetric and Asymmetric Supercapacitor Applications

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Development of a 3D graphene aerogel and 3D porous graphene/MnO2@polyaniline hybrid film for all-solid-state flexible asymmetric supercapacitors

Abstract: A porous 3D RGO/MnO2@PANI hybrid film and a 3D graphene aerogel were developed to fabricate a high-performance all-solid-state flexible asymmetric supercapacitor.

Cited by 93 publications

References 53 publications

Hierarchical Porous RGO/PEDOT/PANI Hybrid for Planar/Linear Supercapacitor with Outstanding Flexibility and Stability

Hierarchical Porous RGO/PEDOT/PANI Hybrid for Planar/Linear Supercapacitor with Outstanding Flexibility and Stability

Manganese‐Oxide‐Based Electrode Materials for Energy Storage Applications: How Close Are We to the Theoretical Capacitance?

Disposed Dry Cells as Sustainable Source for Generation of Few Layers of Graphene and Manganese Oxide for Solid‐State Symmetric and Asymmetric Supercapacitor Applications

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Development of a 3D graphene aerogel and 3D porous graphene/MnO₂@polyaniline hybrid film for all-solid-state flexible asymmetric supercapacitors