Band-gap tuned hexagonal-boron nitride/reduced graphene oxide superlattice wrapped cadmium sulfide/Polypyrrole nanocomposite as an efficient supercapacitor electrode material

Panicker, Nithin Joseph; Ajayan, Pulickel M.; Sahu, Partha Pratim

doi:10.1016/j.est.2022.105901

Cited by 23 publications

(4 citation statements)

References 86 publications

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“…The electrons move from the valence band to the conduction band of the electrode material and the conduction electrons are directed toward negative terminals via the conducting substance of nickel foam. Superior electron collection efficiency is induced by charge formation and band bending on the MoS 2 /rGO heterostructure surface. , This enhances the charge transfer of the MnO 2 /MoS 2 /rGO nanocomposite, which improves its electrochemical performance …”

Section: Results and Interpretationmentioning

confidence: 99%

Development of Asymmetric Electrodes of Robust MoS₂/rGO Heterostructures with MnO₂ Nanohybrid Composites for Cylindrical Type Energy Storage Devices

2024

Energy Fuels

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In the current era, researchers are focusing on effective electrodes to enhance energy storage devices including high energy and power density. Among them, two-dimensional (2D) materials play a crucial role in supercapacitors and batteries due to their enormous electrochemical properties. Here, MnO 2 nanorods are uniformly decorated above the novel surface of MoS 2 /rGO heterostructure electrode materials for hybrid supercapacitors via a facile hydrothermal approach. The physical and chemical properties of the prepared pure, binary, and ternary nanocomposites are investigated by suitable characterization techniques. The 2D heterostructure of MoS 2 /rGO offers an enlarged surface area, continuous network pathways, improved electronic conductivity, and electro-active sites in the MnO 2 / MoS 2 /rGO nanohybrid composite electrode. Due to the dimensional structure and synergetic effect of MoS 2 /rGO, the MnO 2 nanohybrid composite attained a maximum specific capacitance of 1052.2 Fg −1 at 1 Ag −1 and the ternary composite delivered an extraordinary capacitance retention of 97.5% over the 10,000 cycles in 1 M of Na 2 SO 4 . Likewise, the prepared asymmetric supercapacitor devices of MnO 2 /MoS 2 /rGO//AC obtained a specific capacitance of 102 Fg −1 at 1 Ag −1 , as well as superior cyclic stability of 94% after 10,000 cycles, and the ASC device achieved a maximum energy density of 57.2 Wh kg −1 and a power density of 1.14 kW kg −1 in 2 V using a polymer gel electrolyte of PVA-Na 2 SO 4 solution. Moreover, a cylindrical-shaped ASC device was constructed, and the ability of the device was also tested via an LED system. The electrochemical attributes of two-dimensional MoS 2 and rGO nanosheets with MnO 2 nanorod nanocomposite electrodes become a superior electrochemical electrode material for the upcoming generation.

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Section: Results and Interpretationmentioning

confidence: 99%

Development of Asymmetric Electrodes of Robust MoS₂/rGO Heterostructures with MnO₂ Nanohybrid Composites for Cylindrical Type Energy Storage Devices

2024

Energy Fuels

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“…The synergistic effects of CdS, h-BN\\rGO, and PPy are attributable to presenting a compelling solution for high-performance supercapacitor applications, combining notable specific capacitance, cyclic stability, and mechanical strength. [111] The synthesis and electrochemical performance of a PPy-rGO-CuS is explored, a ternary composite derived from polymer, for supercapacitor applications. The in-situ chemical oxidative polymerization method is adopted with systematically varying CuS compositions, and 5 % CuS emerged as the optimum configuration for superior electrochemical performance.…”

Section: Graphene Conducting Polymers and Metal Oxides Based Ternary ...mentioning

confidence: 99%

“…Electrochemical analysis, confirmed the superior performance of h‐BN\\rGO\\CdS\\PPy contrasted to CdS, rGO\\CdS, and h‐BN\\rGO. The synergistic effects of CdS, h‐BN\\rGO, and PPy are attributable to presenting a compelling solution for high‐performance supercapacitor applications, combining notable specific capacitance, cyclic stability, and mechanical strength [111] …”

Section: Metal Oxides and Sulfides Based Ternary Compositesmentioning

confidence: 99%

Challenges and Opportunities: Conducting Polymer‐Graphene based Nanocomposites of Metal Oxides and Metal Sulfides for Supercapacitors

Saeed,

Khalid,

Naeem Anjum

2024

ChemistrySelect

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Supercapacitor's demand for hybrid vehicles, portable electronic gadgets, and high‐power applications is increasing unexpectedly. However, supercapacitors′ inadequacies (i. e., inflated costs, poor energy density, erratic cycle life) need to be addressed by introducing novel composite materials and developing facile synthesis techniques which can give them high surface area and improved electrochemical stability. Moreover, hybrid supercapacitor electrodes based on ternary composites should be designed to broaden their application range and to deal with the challenges. The primary aim of this review is to explore the recent advances in the field of hybrid supercapacitors to address the challenges in this field. Specifically, we have focused on ternary nanocomposites comprising Graphene‐Conducting Polymers‐Metal Oxides (G‐CPs‐MOs) and Graphene‐Conducting Polymers‐Metal Sulfides (G‐CPs‐MSs). Our investigations centred around exploring various synthesis techniques, the surface morphology of composites and analysing the reported electrochemical evaluations of supercapacitor electrodes to highlight the potential prospects and challenges they present.

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“…37-1492). [46] While the weak peak of about 25.5°in MoS 2 @CPDs corresponds to the (002) planes of carbon (CPDs) [57,58] (Figure S1d, Supporting Information). Nitrogen desorption-adsorption isotherm was applied to investigate the BET surface areas and the pore structures (Figure S5a,b, Supporting Information).…”

Section: Formation Of the Mos 2 @Cpds Nanoflowers Compositementioning

confidence: 99%

Carbonized Polymer Dots for Controlling Construction of MoS₂ Flower‐Like Nanospheres to Achieve High‐Performance Li/Na Storage Devices

Al‐Ansi,

Salah,

Drmosh

et al. 2023

Small

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Despite being one of the most promising materials in anode materials, molybdenum sulfide (MoS2) encounters certain obstacles, such as inadequate cycle stability, low conductivity, and unsatisfactory charge‐discharge (CD) rate performance. In this study, a novel approach is employed to address the drawbacks of MoS2. Carbon polymer dots (CPDs) are incorporated to prepare three‐dimensional (3D) nanoflower‐like spheres of MoS2@CPDs through the self‐assembly of MoS2 2D nanosheets, followed by annealing at 700 °C. The CPDs play a main role in the creation of the nanoflower‐like spheres and also mitigate the MoS2 nanosheet limitations. The nanoflower‐like spheres minimize volume changes during cycling and improve the rate performance, leading to exceptional rate performance and cycling stability in both Lithium‐ion and Sodium‐ion batteries (LIBs and SIBs). The optimized MoS2@CPDs‐2 electrode achieves a superb capacity of 583.4 mA h g−1 at high current density (5 A g−1) after 1000 cycles in LIBs, and the capacity remaining of 302.8 mA h g−1 after 500 cycles at 5 A g−1 in SIBs. Additionally, the full cell of LIBs/SIBs exhibits high capacity and good cycling stability, demonstrating its potential for practical application in fast‐charging and high‐energy storage.

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Band-gap tuned hexagonal-boron nitride/reduced graphene oxide superlattice wrapped cadmium sulfide/Polypyrrole nanocomposite as an efficient supercapacitor electrode material

Cited by 23 publications

References 86 publications

Development of Asymmetric Electrodes of Robust MoS₂/rGO Heterostructures with MnO₂ Nanohybrid Composites for Cylindrical Type Energy Storage Devices

Development of Asymmetric Electrodes of Robust MoS₂/rGO Heterostructures with MnO₂ Nanohybrid Composites for Cylindrical Type Energy Storage Devices

Challenges and Opportunities: Conducting Polymer‐Graphene based Nanocomposites of Metal Oxides and Metal Sulfides for Supercapacitors

Carbonized Polymer Dots for Controlling Construction of MoS₂ Flower‐Like Nanospheres to Achieve High‐Performance Li/Na Storage Devices

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Band-gap tuned hexagonal-boron nitride/reduced graphene oxide superlattice wrapped cadmium sulfide/Polypyrrole nanocomposite as an efficient supercapacitor electrode material

Cited by 23 publications

References 86 publications

Development of Asymmetric Electrodes of Robust MoS2/rGO Heterostructures with MnO2 Nanohybrid Composites for Cylindrical Type Energy Storage Devices

Development of Asymmetric Electrodes of Robust MoS2/rGO Heterostructures with MnO2 Nanohybrid Composites for Cylindrical Type Energy Storage Devices

Challenges and Opportunities: Conducting Polymer‐Graphene based Nanocomposites of Metal Oxides and Metal Sulfides for Supercapacitors

Carbonized Polymer Dots for Controlling Construction of MoS2 Flower‐Like Nanospheres to Achieve High‐Performance Li/Na Storage Devices

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Development of Asymmetric Electrodes of Robust MoS₂/rGO Heterostructures with MnO₂ Nanohybrid Composites for Cylindrical Type Energy Storage Devices

Development of Asymmetric Electrodes of Robust MoS₂/rGO Heterostructures with MnO₂ Nanohybrid Composites for Cylindrical Type Energy Storage Devices

Carbonized Polymer Dots for Controlling Construction of MoS₂ Flower‐Like Nanospheres to Achieve High‐Performance Li/Na Storage Devices