CdS microspheres as promising electrode materials for high performance supercapacitors

Rathinamala, I.; Babu, I. Manohara; William, J. Johnson; Muralidharan, G.; Prithivikumaran, N.

doi:10.1016/j.mssp.2019.104677

Cited by 42 publications

(12 citation statements)

References 29 publications

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“…The energy density depends on the capacitance and the potential window by relation E ½CV 2 . Therefore, considerable efforts have been made to maximize "E" by enhancing "V" and "C." Among various types of electrochemical capacitors, 2D materials-based supercapacitors like graphene and MoS 2 , are gaining significant interest because of their intrinsic features, such as their high conductivity, low cost, flexibility, wide potential, window and fast redox reaction (Firmiano et al, 2014;Hao et al, 2014;Sun et al, 2015;Lv et al, 2016;Mehran and Baig, 2019;Muthu and Gopalan, 2019;Khan et al, 2020;Rani et al, 2020;Rathinamala et al, 2020;Zhao et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

High-Performance Supercapacitor Electrode Obtained by Directly Bonding 2D Materials: Hierarchal MoS2 on Reduced Graphene Oxide

2020

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Section: Introductionmentioning

confidence: 99%

High-Performance Supercapacitor Electrode Obtained by Directly Bonding 2D Materials: Hierarchal MoS2 on Reduced Graphene Oxide

2020

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“…These results suggests that the ion formation and transport processes in perovskites may largely be activated by the current of free charge carriers as well as specific interface defects . Figure d is a Ragone plot of energy density and power density of some composite materials containing CdS as supercapacitor electrodes to compare our output with some of the results available in the literature …”

Section: Resultsmentioning

confidence: 99%

“…[34] Figure 3d is a Ragone plot of energy density and power density of some composite materials containing CdS as supercapacitor electrodes to compare our output with some of the results available in the literature. [50][51][52][53] For practical applications of supercapacitor, long-time cycling performance is also an essential requirement. Figure 4 depicts the cycling performances of the samples examined by cyclic voltammetry measurements.…”

Section: Resultsmentioning

confidence: 99%

Cadmium Sulfide Quantum Dots–Organometallic Halide Perovskite Bilayer Electrode Structures for Supercapacitor Applications

et al. 2020

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Supercapacitors are attracting great attention because of their fast charging-discharging ability as well as their high power density. The current research in this area focuses mainly on exploring novel low-cost electrode materials with higher energy and power densities. In this work, thin-film electrochemical capacitors were fabricated using layers of self-synthesized cadmium sulfide quantum dots and organometallic halide perovskite materials as active electrodes. Organometallic halide perovskites exhibit interesting ionic responses as well as extraordinary electronic properties. These properties are exploited in fabricating the electrochemical capacitors, and the devices showed excellent cycling ability with stable capacitance outputs beyond 4000 cycles. Impedance spectroscopy measurements revealed that perovskites do not only serve as active electrodes but also as solid electrolytes, thereby enhancing the capacitance of the devices and hence the energy densities. The layers provide high surface areas for electrolytes to access the electrode materials; reasonably low charge transfer resistance and small relaxation time were also observed. This work opens new opportunities for developing thin-film supercapacitors using low-cost electrode materials and employing a facile, inexpensive solution-process coating.

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“…The two linear plots observed in figure 8b and c indicate that the charge storage activity is well achieved and further confirm the fast faradaic charge process of the electrode. A slight shift in the anodic and cathodic peaks is observed in figure 8b and c [97]. Figure 8d displays the associated GCD curves at different specific currents ranging between 1 A g −1 and 10 A g −1 .…”

Section: (B) Electrochemical Performance Of the V 2 O 5 @C-r 2 Hs And Its Binary Graphene Compositesmentioning

confidence: 84%

Binary vanadium pentoxide carbon-graphene foam composites derived from dark red hibiscus sabdariffa for advanced asymmetric supercapacitor

Ngom

Ndiaye

Sylla

et al. 2021

Phil. Trans. R. Soc. A.

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The development of advanced electrode materials derived from biomass for the next generation of energy storage devices, such as supercapacitors with high specific energy and specific power coupled with a good cycle stability, is required to meet the high demand for electric vehicles and portable devices. In this study, sustainable binary vanadium pentoxide carbon-graphene foam composites (V 2 O 5 @C-R 2 HS/GF) were synthesized using a solvothermal method. The X-ray diffraction, Raman and FTIR techniques were used to study the structural properties of the composites (V 2 O 5 @C-R 2 HS/20 mg GF and V 2 O 5 @C-R 2 HS/40 mg GF). The SEM micrographs displayed an accordion-like morphology resulting from the graphene foam-modified V 2 O 5 @C-R 2 HS composite. The V 2 O 5 @C-R 2 HS, V 2 O 5 @C-R 2 HS/20 mg GF and V 2 O 5 @C-R 2 HS/40 mg GF composites were evaluated in a three-electrode configuration using 6 M potassium hydroxide (KOH) as an aqueous electrolyte. Furthermore, a two-electrode device was carried out by fabricating an asymmetric device (V 2 O 5 @C-R 2 HS/GF//AC) where V 2 O 5 @C-R 2 HS/20 mg GF was used as a positive electrode and activated carbon (AC) as a negative electrode at a cell voltage of 1.6 V in 6 M KOH. The V 2 O 5 @C-R 2 HS/GF//AC showed a high specific energy and specific power values of 55 W h kg −1 and 707 W kg −1 , respectively, at a specific current of 1 A g −1 . The asymmetric device presented a good stability test showing 99% capacity retention up to 10 000 cycles and was confirmed by the floating time up to 150 h with specific energy increasing 23.6% after the first 10 h. This article is part of the theme issue ‘Bio-derived and bioinspired sustainable advanced materials for emerging technologies (part 2)’.

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CdS microspheres as promising electrode materials for high performance supercapacitors

Cited by 42 publications

References 29 publications

High-Performance Supercapacitor Electrode Obtained by Directly Bonding 2D Materials: Hierarchal MoS2 on Reduced Graphene Oxide

High-Performance Supercapacitor Electrode Obtained by Directly Bonding 2D Materials: Hierarchal MoS2 on Reduced Graphene Oxide

Cadmium Sulfide Quantum Dots–Organometallic Halide Perovskite Bilayer Electrode Structures for Supercapacitor Applications

Binary vanadium pentoxide carbon-graphene foam composites derived from dark red hibiscus sabdariffa for advanced asymmetric supercapacitor

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