Fabrication of sodium and MoS2 incorporated NiO and carbon nanostructures for advanced supercapacitor application

Zheng, Sheng; Lim, Siew Shee; Foo, Chuan Yi; Haw, Choon Yian; Chiu, Wee Siong; Chia, Chin Hua; Khiew, Poi Sim

doi:10.1016/j.est.2023.106980

Cited by 19 publications

(8 citation statements)

References 50 publications

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“…In eqs and , k 1 is due to the surface capacitive charge storage and k 2 is the diffusion-controlled charge storage. The values of k 1 and k 2 are calculated from the slope and y -intercept of the i (ν)/(ν) 0.5 vs (ν) 0.5 curve. − The deconvoluted CV curve at 10 mV/s scan rate is shown in Figure c. The deconvoluted CV curves at 5, 15, 20, 25, 30, 35, 40, 45, and 50 mV/s scan rates are shown in Figure S5.…”

Section: Resultsmentioning

confidence: 99%

Tailoring the Perovskite Structure to Acquire an Inorganic La₂NiCrO₆ Double Perovskite as an Efficient Energy Storage Application by Varying Molar Concentrations of Citric Acid

Ajin,

Balamurugan,

Chandra Bose

2023

ACS Appl. Energy Mater.

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Owing to the high power density and long cycle stability, supercapacitors are promising energy storage devices instead of electrochemical batteries. In recent years, perovskite materials have received good attention in the research community for pseudocapacitive electrode material. Especially, these materials, having a high oxygen vacancy concentration, exhibit ultra-high capacitance due to oxygen-anion intercalations. In this study, La2NiCrO6 (LNC) double perovskites are successfully synthesized using the sol–gel method followed by the solid–state reaction at different concentrations of citric acid. The interconnected spherical granular-structured LNC is an efficient supercapacitor electrode material because of its stress-free octahedron lattice and inherent oxygen vacancies. In a three-electrode system, LNC@Ni-foam reveals a specific capacity of 529 C g–1 (147 mA h g–1) at a current density of 1 A g–1. To exhibit a real-time application, a device is fabricated with LNC@Ni-foam as a positive electrode and activated carbon (AC) AC@Ni-foam as a negative electrode. This asymmetric device can achieve the specific capacity of 227 C g–1 (63 mA h g–1) at a current density of 1 A g–1. The fabricated device exhibits an energy density of 49.17 W h kg–1 at a power density of 779.79 W kg–1. In addition, the as-fabricated device has a cycle stability of 97% even after 10,000 cycles at a current density of 10 A g–1. These superior electrochemical performances promise the application of this LNC electrode in pseudocapacitors.

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Section: Resultsmentioning

confidence: 99%

Tailoring the Perovskite Structure to Acquire an Inorganic La₂NiCrO₆ Double Perovskite as an Efficient Energy Storage Application by Varying Molar Concentrations of Citric Acid

Ajin,

Balamurugan,

Chandra Bose

2023

ACS Appl. Energy Mater.

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“…Conversely, supercapacitors offer ultrahigh power density and longer cycle life than metal-ion batteries. − They operate through non-Faradic processes, electrochemical double-layer capacitors (EDLC), and the Faradic processes through reversible redox reactions in pseudocapacitors . Hybrid supercapacitors, which combine the benefits of both processes, have emerged as a solution with higher energy and power density and improved cycle life. , Various electrode materials, such as graphene, activated carbon, metal oxides, metal chalcogenides, conducting polymers, and organic frameworks, have been extensively explored for supercapacitor applications. − However, designing nanostructured frameworks with high surface area, porosity, and incorporation of redox-active moieties is crucial for achieving high-performance hybrid supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Triazine-Based Two-Dimensional Porous Covalent Organic Framework for Efficient Electrode Materials for Electrocatalytic Hydrogen Generation and Hybrid Supercapacitors

Halder

Chakraborty

2023

ACS Appl. Eng. Mater.

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The urgent need for eco-friendly and sustainable energy storage systems or green energy production methods to combat the detrimental effects of non-renewable fossil fuels is widely recognized. In this context, we have synthesized a pyromellitic diimide and triazine-containing covalent organic framework named PDT-COF and investigated its performance in two key energy applications: electrocatalytic hydrogen evolution reaction (HER) for green hydrogen energy production and electrochemical energy storage for supercapacitor devices. The PDT-COF nanosheets exhibit a high surface area of 312.6 m 2 /g and abundant pores with a size of ∼1.8 nm. Leveraging these features, the metal-free PDT-COF electrocatalyst demonstrates good performance in HER, requiring a minimal overpotential of 210 mV for 10 mA/cm 2 current density. Notably, PDT-COF follows the Heyrovsky−Volmer mechanism for HER and exhibits outstanding durability, sustaining over 60 h of continuous electrocatalysis. Furthermore, the PDT-COF-based asymmetric solid-state device exhibits a specific capacitance of 104 F/g, coupled with a high energy density of 32.55 W h/kg and a power density of 1875 W/kg at a current density of 1 A/g. Importantly, the robustness and cycle stability of the PDT-COF-based asymmetric pseudocapacitor device are confirmed, as it retains 88% of its initial capacitance and maintains a Columbic efficiency of 90% even after 5000 cycles of charge and discharge. Considering these findings, the synthesized PDT-COF material holds great promise as a metal-free electrode material for future applications in hydrogen energy generation and electrochemical energy storage devices.

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“…These structures enhance the surface areas available for charge storage and provide ample pathways for the transfer of electrolytic ions. 13 Further, as the concentration of MoS 2 increases in the composite electrode (CMOMS-7), the initial specific charge capacity of 578 mA h g −1 (6.5 mA h cm −3 ) of the electrode also increases (Figure 5d). Even after 60 charge− discharge cycles, the CMOMS-7 electrode provides an excellent specific charge capacity of 674 mA h g −1 (7.6 mA h cm −3 ).…”

Section: Li-storage Propertiesmentioning

confidence: 91%

“…The improved electrochemical properties may be attributed to the hierarchical 3D porous structures of MoS 2 @CMO nanocomposites, with improved ionic channels. These structures enhance the surface areas available for charge storage and provide ample pathways for the transfer of electrolytic ions . Further, as the concentration of MoS 2 increases in the composite electrode (CMOMS-7), the initial specific charge capacity of 578 mA h g –1 (6.5 mA h cm –3 ) of the electrode also increases (Figure d).…”

Section: Li-storage Propertiesmentioning

confidence: 97%

In Situ Electrophoretic Decorated Cactus-Type Metallic-Phase MoS₂ on CaMn₂O₄ Nanofibers for Binder-Free Next-Generation LIBs

Tandon,

Sharma

2024

ACS Appl. Mater. Interfaces

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Ternary manganese-based oxides, such as CaMn 2 O 4 (CMO) nanofibers fabricated via the electrospinning technique, have the potential to offer higher reversible capacity through conversion reactions in comparison to that of carbon-based anodes. However, its poor electrical conductivity hinders its usage in lithium-ion batteries (LIBs). Hence, to mitigate this issue, controlled single-step in situ decoration of highly conducting metallic-phase MoS 2 @CMO nanofibers has been achieved for the first time via the electrophoretic deposition (EPD) technique and utilized as a binder-free nanocomposite anode for LIBs. Further, the composition of MoS 2 @CMO nanofibers has also been optimized to attain better electronic and ionic conductivity. The morphological investigation revealed that the flakes of MoS 2 nanoflowers are successfully and uniformly decorated over the CMO nanofibers' surface, forming a cactus-type morphology. As a binder-free nanocomposite LIB anode, CMOMS-7 (7 wt % MoS 2 @ CMO) demonstrates a specific capacity of 674 mA h g −1 after 60 cycles at 50 mA g −1 and maintains a capacity of 454 mA h g −1 even after 300 cycles at 1000 mA g −1 . Further, the good rate performance (102 mA h g −1 at 5000 mA g −1 ) of CMOMS-7 can be ascribed to the enhanced electrical conductivity provided by the metallic-phase MoS 2 . Moreover, the feasibility of CMOMS-7 is thoroughly investigated by using a full Li-ion cell incorporating a binder-free cathode of LiNi 0.3 Mn 0.3 Co 0.3 O 2 (NMC). This configuration showcases an impressive energy density of 154 Wh kg −1 . Thus, the hierarchical and aligned structure of CMO nanofibers combined with highly conductive MoS 2 nanoflowers facilitates charge transportation within the composite electrodes. This synergistic effect significantly enhances the energy density of the conversion-based nanocomposites, making them highly promising anodes for advanced LIBs.

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Fabrication of sodium and MoS2 incorporated NiO and carbon nanostructures for advanced supercapacitor application

Cited by 19 publications

References 50 publications

Tailoring the Perovskite Structure to Acquire an Inorganic La₂NiCrO₆ Double Perovskite as an Efficient Energy Storage Application by Varying Molar Concentrations of Citric Acid

Tailoring the Perovskite Structure to Acquire an Inorganic La₂NiCrO₆ Double Perovskite as an Efficient Energy Storage Application by Varying Molar Concentrations of Citric Acid

Triazine-Based Two-Dimensional Porous Covalent Organic Framework for Efficient Electrode Materials for Electrocatalytic Hydrogen Generation and Hybrid Supercapacitors

In Situ Electrophoretic Decorated Cactus-Type Metallic-Phase MoS₂ on CaMn₂O₄ Nanofibers for Binder-Free Next-Generation LIBs

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Fabrication of sodium and MoS2 incorporated NiO and carbon nanostructures for advanced supercapacitor application

Cited by 19 publications

References 50 publications

Tailoring the Perovskite Structure to Acquire an Inorganic La2NiCrO6 Double Perovskite as an Efficient Energy Storage Application by Varying Molar Concentrations of Citric Acid

Tailoring the Perovskite Structure to Acquire an Inorganic La2NiCrO6 Double Perovskite as an Efficient Energy Storage Application by Varying Molar Concentrations of Citric Acid

Triazine-Based Two-Dimensional Porous Covalent Organic Framework for Efficient Electrode Materials for Electrocatalytic Hydrogen Generation and Hybrid Supercapacitors

In Situ Electrophoretic Decorated Cactus-Type Metallic-Phase MoS2 on CaMn2O4 Nanofibers for Binder-Free Next-Generation LIBs

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Tailoring the Perovskite Structure to Acquire an Inorganic La₂NiCrO₆ Double Perovskite as an Efficient Energy Storage Application by Varying Molar Concentrations of Citric Acid

Tailoring the Perovskite Structure to Acquire an Inorganic La₂NiCrO₆ Double Perovskite as an Efficient Energy Storage Application by Varying Molar Concentrations of Citric Acid

In Situ Electrophoretic Decorated Cactus-Type Metallic-Phase MoS₂ on CaMn₂O₄ Nanofibers for Binder-Free Next-Generation LIBs