High mass loading of h-WO3 and α-MnO2 on flexible carbon cloth for high-energy aqueous asymmetric supercapacitor

Ji, Su‐Hyeon; Chodankar, Nilesh R.; Jang, Woo‐Sung; Kim, Do‐Heyoung

doi:10.1016/j.electacta.2018.12.187

Cited by 63 publications

(21 citation statements)

References 49 publications

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“…Ragone plots of the constructed 5 nm NiO/Co 3 O 4 @NF || AC ASC device presented by this study are displayed in Figure 6h. The plot features the practical ability of the fabricated device with the developed materials in the aspect of energy density (E) and power density (P) obtained from Equations (12) and (13). The corresponding plot of energy density versus power density with 5 nm NiO/Co 3 O 4 @NF || AC ASC device has been presented along with representative values of the materials developed with Ni-and Co-based device systems.…”

Section: Electrochemical Measurements For Asymmetric Devicementioning

confidence: 99%

Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Adhikari

Seenivasan

et al. 2020

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traditional battery systems. [10,11] Practically, lower energy density bounds the applicability of supercapacitors over battery systems, leaving more room in developing high energy density supercapacitors without having to compromise the power competence. [12-14] A well-known approach offering such outstanding energy density is via fabrication of asymmetric supercapacitor device that focusses on the positive materials excellency exhibiting high specific capacitance and providing a broad potential window when combined with a double-layer type negative electrode material. [15-17] Co 3 O 4 , a pseudocapacitive metal oxide, belonging to the family of spinel is a promising positive active material in electrochemical energy storage devices owing to its high specific capacitance (3560 F g −1) theoretically with being earthabundant, cost-effective, and also environment friendly. [18-20] Pseudocapacitors follow faradaic redox electrochemical reactions on the material's surface through continuous intercalation/deintercalation of electrons or ions which makes the surface vulnerable to destruction resulting in lower efficiency of the electroactive material affecting the electrochemical cycles. [21-23] Therefore, much effort has been put forward to increase the efficiency and stability of the Co 3 O 4 structures through nanostructured, [18] heterostructured, [24,25] and core-shell type structures [26] to reduce the structural deterioration from Co 3 O 4 and increase the overall specific capacitances. For instance, a 3D hierarchical structure of CoWO 4 /Co 3 O 4 was developed that exhibited significantly high specific capacitance of 1728 F g −1 at a current density of 1 A g −1 retaining about 85.9% specific capacitance after 5000 cycles. [27] Paliwal and Meher design a heterostructure of Co 3 O 4 /NiCo 2 O 4 perforated nanosheets that delivers specific capacitance of 1767 F g −1 at a current density of 0.5 A g −1 maintaining 552 F g −1 capacitance at high current density 16 A g −1. Additionally, the asymmetric device composed of Co 3 O 4 /NiCo 2 O 4 ||N-rGO retains 93.8% areal capacitance after 10 000 operating cycles. [28] An excellent core-shell type CoO@Co 3 O 4 nanocrystals were grown solvothermally which delivered 3377 F g −1 specific capacitance at current density 2 A g −1 and the capacity retention was about 58.6% after 4000 charge-discharge cycles. [29] Lu et al. reported Co 3 O 4 /CoS core-shell nanosheets grown over Ni-foam by room temperature sulfurization process. The structure showed an improved specific capacitance as high as 1658 F g −1 at 1 A g −1 Designing of multicomponent transition metal oxide system through the employment of advanced atomic layer deposition (ALD) technique over nanostructures obtained from wet chemical process is a novel approach to construct rational supercapacitor electrodes. Following the strategy, core-shell type NiO/Co 3 O 4 nanocone array structures are architectured over Ni-foam (NF) substrate. The high-aspect-ratio Co 3 O 4 nanocones are hydrothermally grown over NF following the p...

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Section: Electrochemical Measurements For Asymmetric Devicementioning

confidence: 99%

Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Adhikari

Seenivasan

et al. 2020

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“…Recently, Ji et al. reported the fabrication of an ASC based on a high mass loading of h‐WO 3 as a negative electrode and MnO 2 as a positive electrode . The ASC device achieved a potential window of 1.4 V, a volumetric capacitance of 350 mF cm −3 , and energy density of 0.095 mWh cm −3 with excellent cycling stability.…”

Section: Current Advances In Wo3‐based Scsmentioning

confidence: 99%

Review on Recent Progress in the Development of Tungsten Oxide Based Electrodes for Electrochemical Energy Storage

Shinde

2019

ChemSusChem

147

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Current progress in the advancement of energy‐storage devices is the most important factor that will allow the scientific community to develop resources to meet the global energy demands of the 21st century. Nanostructured materials can be used as effective electrodes for energy‐storage devices because they offer various promising features, including high surface‐to‐volume ratios, exceptional charge‐transport features, and good physicochemical properties. Until now, the successful research frontrunners have focused on the preparation of positive electrode materials for energy‐storage applications; nevertheless, the electrochemical performance of negative electrodes is less frequently reported. This review mainly focuses on the current progress in the development of tungsten oxide‐based electrodes for energy‐storage applications, primarily supercapacitors (SCs) and batteries. Tungsten is found in various stoichiometric and nonstoichiometric oxides. Among the different tungsten oxide materials, tungsten trioxide (WO3) has been intensively investigated as an electrode material for different applications because of its excellent charge‐transport features, unique physicochemical properties, and good resistance to corrosion. Various WO3 composites, such as WO3/carbon, WO3/polymers, WO3/metal oxides, and tungsten‐based binary metal oxides, have been used for application in SCs and batteries. However, pristine WO3 suffers from a relatively low specific surface area and low energy density. Therefore, it is crucial to thoroughly summarize recent progress in utilizing WO3‐based materials from various perspectives to enhance their performance. Herein, the potential‐ and pH‐dependent behavior of tungsten in aqueous media is discussed. Recent progress in the advancement of nanostructured WO3 and tungsten oxide‐based composites, along with related charge‐storage mechanisms and their electrochemical performances in SCs and batteries, is systematically summarized. Finally, remarks are made on future research challenges and the prospect of using tungsten oxide‐based materials to further upgrade energy‐storage devices.

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“…Apart from MnO 2 , there have been several other metallic and bimetallic oxides such as V 2 O 5 , Fe 2 O 3 , NiO, MoO 3 , ZnO, WO 3 , CoMoO 4 , NiMoO 4 , NiCo 2 O 4 , FeCo 2 O 4 , which have been deposited onto the carbon cloths to fabricate supercapacitor electrodes. Recently, ZnO@C@NiO core‐shell nanorods arrays were grown upon carbon cloth substrate .…”

Section: Flexible Carbon Cloth‐based Hybrids For Electrochemical Supementioning

confidence: 99%

“…[67] Since then, carbon cloths have gained tremendous attention as current collectors in metal oxide-based supercapacitor electrodes due to their good electrical conductivity. [68] Apart from MnO 2 , there have been several other metallic and bimetallic oxides such as V 2 O 5 , [44] Fe 2 O 3 , [29,[50][51][52] NiO, [69,70] MoO 3 , [67,71,72] ZnO, [69,73,74] WO 3 , [75] CoMoO 4 , [76,77] NiMoO 4 , [78] NiCo 2 O 4 , [78,79] FeCo 2 O 4 , [80] which have been deposited onto the carbon cloths to fabricate supercapacitor electrodes. Recently, ZnO@C@NiO core-shell nanorods arrays were grown upon carbon cloth substrate.…”

Section: Growth Of Metal Oxides Chalcogenides and Phosphides On Carmentioning

confidence: 99%

Carbon Cloth‐based Hybrid Materials as Flexible Electrochemical Supercapacitors

et al. 2019

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Carbon cloths are the important materials composed of woven carbon fibres having the diameters in the range of 5–10 μm. These materials have been investigated for innumerable applications such as supercapacitors (symmetric and asymmetric), batteries, solar cells, and catalysis. They are found to be the best supports as supercapacitive materials by providing high surface area, conductivity and flexibility compared to much widely used substrate materials such as Ni foam and 1D Fe nanowires. High conductivity and surface area of carbon cloths enable ion diffusion and cause decrease in charge transfer resistance, resulting in an increase of specific capacitance of specific electrodes. Several supercapacitive metal oxides, chalcogenides, phosphides, MXenes, carbon nanotubes, graphene, and conductive polymers have been incorporated into carbon cloths to improve their energy storage activity. Further modification of carbon cloth surface via oxidation, doping and by the growth of different nanostructures is also helpful as it increases the electroactive surface area necessary for electrochemical interaction. The present review mainly focuses on the development of flexible supercapacitors using carbon cloth‐based substrate materials. Such flexible supercapacitors can be further utilized for an uninterrupted and steady power supply to wearable and portable electronic devices.

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High mass loading of h-WO3 and α-MnO2 on flexible carbon cloth for high-energy aqueous asymmetric supercapacitor

Cited by 63 publications

References 49 publications

Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Review on Recent Progress in the Development of Tungsten Oxide Based Electrodes for Electrochemical Energy Storage

Carbon Cloth‐based Hybrid Materials as Flexible Electrochemical Supercapacitors

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High mass loading of h-WO3 and α-MnO2 on flexible carbon cloth for high-energy aqueous asymmetric supercapacitor

Cited by 63 publications

References 49 publications

Encapsulation of Co3O4 Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Encapsulation of Co3O4 Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Review on Recent Progress in the Development of Tungsten Oxide Based Electrodes for Electrochemical Energy Storage

Carbon Cloth‐based Hybrid Materials as Flexible Electrochemical Supercapacitors

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Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors