Anchoring RuO2 nanoparticles on reduced graphene oxide-multi-walled carbon nanotubes as a high-performance supercapacitor

Hosseini, Mir Ghasem; Shahryari, Elham

doi:10.1007/s11581-018-2668-2

Cited by 27 publications

(12 citation statements)

References 36 publications

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“…[254] Similar ternary nanocomposites were reported using chemical technique that demonstrated gravimetric capacitance of~1850 F g À 1 at 10 mV s À 1 potential scan rate with high current stability. [255] Recently, a novel unique nanostructured binder-free electrode of RuO 2 /CNT/graphene was prepared via bi-step electrochemical routes that acted as an electrode for high energy supercapacitor, the fabrication procedure of which has been shown schematically in Figure 17(a). The cross-linked morphology of graphene nanosheets and CNT in the composite prepared initially by cathodic electrophoretic deposition followed by electro-deposition of RuO 2 nanoparticle showed optimum composition with 60-RuO 2 -GC sample displaying maximum specific capacitance of 480.3 F g À 1 measured at 0.53 mA cm À 2 current density using 2 M H 2 SO 4 electrolyte in the potential window of 0-1.4 V. Comparative experimental and calculated specific capacitances were evaluated for each electrode composition as shown in Figure 17(b).…”

Section: Ruo 2 -Based Ternary Compositesmentioning

confidence: 99%

“…The ternary composite displayed exceptionally high specific capacitance of ∼1210 F g −1 under low optimum RuO 2 loading at 25 mV s −1 scan rate with good capacitance retention . Similar ternary nanocomposites were reported using chemical technique that demonstrated gravimetric capacitance of ∼1850 F g −1 at 10 mV s −1 potential scan rate with high current stability . Recently, a novel unique nanostructured binder‐free electrode of RuO 2 /CNT/graphene was prepared via bi‐step electrochemical routes that acted as an electrode for high energy supercapacitor, the fabrication procedure of which has been shown schematically in Figure (a).…”

Section: Ruo2‐based Ternary Compositesmentioning

confidence: 99%

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Recent Progress in Ruthenium Oxide‐Based Composites for Supercapacitor Applications

Majumdar¹,

Maiyalagan

Jiang³

2019

ChemElectroChem

252

147

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Electrochemical energy storage has emerged as one of the principal topics of present‐day research to deal with the high energy demands of modern society. Accordingly, besides fuel cells and battery technologies, interesting and challenging results have been observed in the recent past, during the materialization of “supercapacitors” or “ultracapacitors”, which have provoked a sharp increase in research inclination to revisit this aspect of renewable and sustainable energy storage. Supercapacitor performances are largely dependent on electrode materials, the nature of the electrolyte used, and the range of voltage windows employed. Carbon‐based electrode materials have tunable properties such as electrical conductivity, extensive surface area, and faster electron transfer kinetics with low fabrication costs. But their specific capacitances are found to be too low for commercialization. Ruthenium dioxide (RuO2), owing to its high theoretical specific capacitance value (1400–2000 F g−1), has been extensively recognized as a favorable material for supercapacitor devices, but high production cost and agglomeration effects stand as high barriers preventing marketable usage. Consequently, RuO2‐based nanocomposites have been widely studied to optimize the material cost, with simultaneous improvement in the electrochemical performances. This Review describes comprehensively the recent progress in terms of the fabrication and design, electrochemical performance, and achievements of RuO2 and its nanocomposites as electrode materials for supercapacitors, which will be beneficial for further research designing high‐performance supercapacitor devices.

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Section: Ruo 2 -Based Ternary Compositesmentioning

confidence: 99%

Section: Ruo2‐based Ternary Compositesmentioning

confidence: 99%

Recent Progress in Ruthenium Oxide‐Based Composites for Supercapacitor Applications

Majumdar¹,

Maiyalagan

Jiang³

2019

ChemElectroChem

252

147

View full text Add to dashboard Cite

show abstract

“…At lower scan rates, many ions are adsorbed on both inside and outside surfaces of the electrode materials, which leads to higher specific capacitances. However, at higher scan rates, the electrolyte ions are only adsorbed on the outside surface of the electrode . The transfer rate of ions and specific capacitance are decrease due to this cause, as shown in Table .…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, there are many studies of nanocomposites such as RuO 2 /AC, carbon aerogel/RuO 2, RuO 2 /TiO 2. Hosseini et al have presented rGO/MWCNT/RuO 2 electrode, which has high specific capacitance of 1846.3 F/g at 10 mV/s. Moreover, Hsieh et al have given the highest specific capacitance of RuO 2 .nH 2 O/MWCNT electrodes in 1 M H 2 SO 4 aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Supercapacitor performances of RuO₂/MWCNT, RuO₂/Fullerene nanocomposites

et al. 2019

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In this study, RuO2/Fullerene and RuO2/MWCNT nanocomposites were synthesized to use as an electroactive materials in symmetric supercapacitor device performances. The materials were examined via Fourier transform infrared spectroscopy‐attenuated total reflectance (FTIR‐ATR), thermo‐gravimetric analysis (TGA‐DTA), scanning electron microscopy‐energy dispersive X‐ray analysis (SEM‐EDX), cyclic voltammetry (CV), galvanostatic charge/discharge (GCD) and electrochemical impedance spectroscopy (EIS). The RuO2/MWCNT and RuO2/Fullerene nanocomposite electrodes show good electrochemical performances. For instance, the highest specific capacitance of RuO2/Fullerene and RuO2/MWCNT electrodes reaches Csp = 3895.11 and 1662.19 F/g at 1 mV/s within the potential range of 0.8 V in 1 M H2SO4 solution. RuO2/MWCNT and RuO2/Fullerene nanocomposites have good cycle stability ~100% specific capacitance at [RuO2]o/[MWCNT]o = 1:1; 2:1 and [RuO2]o/[Fullerene]o = 2:1, respectively. The different equivalent circuit models of LR1Q(C1R2) and LR1(Q1R2)(Q2R3) were used to interpret EIS data.

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“…[17,85,110,182,189] After further hybridizing with transition metal oxides, conductive polymers, or other pseudocapacitive substances, the produced hybrid SC electrodes can further enhance the record specific capacitance exceeding 1000 F g À1 . [27,59,117,121,153,190,200] As a result, the small energy density, the main shortage of SCs, has been more or less alleviated. The record energy density for symmetrical pure carbonbased SCs is over 50 Wh kg À1 , [144] while for hybrid devices it exceeds 300 Wh kg À1 .…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Carbon Nanomaterials‐Enabled High‐Performance Supercapacitors: A Review

Zhao

Liu

et al. 2022

Adv Energy and Sustain Res

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Supercapacitors (SCs), an important kind of electrochemical energy storage device, are featured with high power density, rapid charging and discharging, and ultralong cycling lifespan and have been widely applied in multiscenario energy storage and output systems, such as portable consumer electronics, electric vehicles, and reservoir setups for green and sustainable energy resources. Among their components, electrode materials are of primary importance in dictating their performances. Owing to good electric conductivity, achievably large specific surface area, low cost, chemical stability, and easy loading with other electrochemically active species, various carbon nanomaterials, including activated carbons, carbon nanotubes, graphene, and other porous carbons, are promising electrode materials in the fabrication of high-performance SCs. In fact, the past decade has witnessed enormous efforts in the development of highperformance carbon-based SC electrode materials and great progresses achieved in the field. In this review, recent advances on these carbon-based SCs are summarized through a number of selected representative works. In each one, the unique preparation method, structural features, and their correlations to electrochemical properties and final SC performance are presented and discussed. At the end of the review, the challenges and future developing prospects are briefly outlined.

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Anchoring RuO2 nanoparticles on reduced graphene oxide-multi-walled carbon nanotubes as a high-performance supercapacitor

Cited by 27 publications

References 36 publications

Recent Progress in Ruthenium Oxide‐Based Composites for Supercapacitor Applications

Recent Progress in Ruthenium Oxide‐Based Composites for Supercapacitor Applications

Supercapacitor performances of RuO₂/MWCNT, RuO₂/Fullerene nanocomposites

Carbon Nanomaterials‐Enabled High‐Performance Supercapacitors: A Review

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Anchoring RuO2 nanoparticles on reduced graphene oxide-multi-walled carbon nanotubes as a high-performance supercapacitor

Cited by 27 publications

References 36 publications

Recent Progress in Ruthenium Oxide‐Based Composites for Supercapacitor Applications

Recent Progress in Ruthenium Oxide‐Based Composites for Supercapacitor Applications

Supercapacitor performances of RuO2/MWCNT, RuO2/Fullerene nanocomposites

Carbon Nanomaterials‐Enabled High‐Performance Supercapacitors: A Review

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Product

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Supercapacitor performances of RuO₂/MWCNT, RuO₂/Fullerene nanocomposites