Flexible iron-doped Sr(OH)2 fibre wrapped tuberose for high-performance supercapacitor electrode

Kavyashree,; Parveen, Shama; Raut, Shrikant S.; Tiwari, M. K.; Sankapal, Babasaheb R.; Pandey, S. N.

doi:10.1016/j.jallcom.2018.12.023

Cited by 25 publications

(15 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many researchers have reported that the performance of a supercapacitor is enhanced with metal doping as well as the formation of nanocomposites. − ,,, Recently, our group reported a high specific capacity (∼413 C g –1 ), energy density (∼45.95 Wh kg –1 ), and power density (∼2.6 kW kg –1 ) in an Sr(OH) 2 -based supercapacitive electrode. The natural abundance, low cost, electrochemical performance, and environment-friendly nature of this material has made it an efficient candidate that has attracted the researchers to use it as a new electrode for supercapacitors.…”

Section: Introductionmentioning

confidence: 95%

“…Charge storage via the pseudocapacitance mechanism exhibits some interesting properties as compared to the EDLC mechanism. ,, For this reason, a lot of work has been done for the storage of charge via the pseudomechanism for the fabrication of high-performance supercapacitive electrodes . Many researchers have suggested that the transition metal oxides can be a potential candidate for supercapacitive electrodes due to the high surface area of the material. ,− Graphene has also been exploited for supercapacitor applications. ,, Currently, materials such as NiO, TiO 2 , Co 3 O 4, RuO 2 , Ni(OH) 2 , Sr(OH) 2, MnO 2 , Co 3 O 4 , Bi 2 O, In 2 O 3 , and Fe 3 O 4 are being investigated as supercapacitors keeping in view their cost-effectiveness, high capacity, and environment-friendly nature. ,,, …”

Section: Introductionmentioning

confidence: 99%

“…The natural abundance, low cost, electrochemical performance, and environment-friendly nature of this material has made it an efficient candidate that has attracted the researchers to use it as a new electrode for supercapacitors. The supercapacitive properties can be further enhanced by suitable doping of metals such as Cu and Fe. , …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Fe Doping on the Surface Morphology and Supercapacitor Properties of Sr(OH)₂ Thin Films: A Fractal Approach

Yadav

Priya

et al. 2021

J. Phys. Chem. C

View full text Add to dashboard Cite

Fractal concepts have been employed to explore the morphological evolution of Sr(OH) 2 thin films prepared by the successive ionic layer adsorption and reaction (SILAR) method on stainless steel (SS) substrate. The surface morphology of each sample was captured using atomic force microscopy (AFM). Interface width, lateral correlation length, and roughness exponent were computed. Our study reveals that as doping is increased, the roughness exponent decreases and the fractal dimension increases. In all cases, the value of the roughness exponent was found to be greater than 0.5, indicating that the height fluctuations at neighboring pixels are correlated positively and exhibit persistent behavior and memory effect. Advanced fractal parameters such as lacunarity coefficient (σ), Hurst coefficient (HC), fractal succolarity (FS), and surface entropy (SE) are also calculated. Our study reveals that the surface entropy does not show any significant change, indicating a globally uniform surface. Furthermore, the local surface slope is found to play a crucial role in the performance of supercapacitive electrodes. Fractal analysis indicates that electrodes with larger fractal dimension are better for supercapacitor applications. These observations are corroborated with the 0.5 atom % Fe/Sr(OH) 2 doped sample. This sample exhibits both the highest fractal dimension and a specific capacity of 776 C g −1 at a scan rate of 5 mV s −1 . The materials with higher fractal dimension could thus be a strong candidate for the fabrication of highly efficient supercapacitors.

show abstract

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Fe Doping on the Surface Morphology and Supercapacitor Properties of Sr(OH)₂ Thin Films: A Fractal Approach

Yadav

Priya

et al. 2021

J. Phys. Chem. C

View full text Add to dashboard Cite

show abstract

“…As traditional fossil fuels are causing increasing environment problems, effective usage of the green energy in the world is becoming prominent, which makes the innovation of energy storage devices an urgent demand . Thus, how to make a safe and environmental‐friendly device with high specific capacity, flexibility, light weight and good stability has attracted extensive attention for researchers, which is important to solve environmental issues and make full use of green energy …”

Section: Introductionmentioning

confidence: 99%

“…[1,2] Thus, how to make a safe and environmental-friendly device with high specific capacity, flexibility, light weight and good stability has attracted extensive attention for researchers, which is important to solve environmental issues and make full use of green energy. [3][4][5][6] Metal-organic frameworks (MOFs), constructed using both organic and inorganic components, have been considered as a new type of precursors, thanks to its controllable morphology, size and structure. Among them, cobalt MOF has attracted wide attention because of its various valence states, low cost of raw materials and easy access.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanoarrays Embedded with Metal Compounds for High‐Performance Flexible Supercapacitors

Zhu

Guan

Cai

et al. 2019

Batteries & Supercaps

View full text Add to dashboard Cite

Metal-organic frameworks (MOFs)-derived nanoarrays have been widely used as electrode materials in energy storage applications with the unique morphology and large specific surface area. Herein, we report a series of N-doped carbon arrays embedded with different metal compounds (noted as NC@Co 3 O 4 , NC@CoSe 2 and NC@CoS 2 ), which have been derived from a Co-based MOF through simple fabrication processes. The resulted structures have high surface-to-volume ratio and short charge-transfer paths in electrochemical reactions, which greatly benefit the energy storage performance. An asymmetric supercapacitor of NC@CoS 2 //Co-NC@Fe 2 O 3 is also demonstrated, which has a power density up to 23.5 kW/kg and illustrates good cycling stability after long-time rapid charging and discharging. This work demonstrates a promising way to develop MOF-derived nanoarrays for flexible energy storage devices.

show abstract

Efficient Electrochemical Performance of Sr(OH)₂:MnO₂ Binary Composites for Solid State Symmetric Supercapacitor

Sharma,

Kavyashree,

Pandey

2024

ChemistrySelect

View full text Add to dashboard Cite

In this study, we synthesized a binder‐free composite electrode based on Sr(OH)2/MnO2 material. The active electrode was prepared using the layer‐by‐layer (LBL) technique. The surface architecture of the sample was examined through scanning electron microscopy (SEM) and high‐resolution scanning electron microscopy (FE‐SEM). Further, the microstructural information of the electrode was revealed via transmission electron microscopy (TEM). The composite confirmation was ensured through X‐ray diffraction (XRD), Fourier‐transform infrared spectroscopy (FTIR), and energy‐dispersive X‐ray spectroscopy (EDX) spectra with mapping analysis. The electrode exhibited the maximum specific capacitance of 554.7 F g−1 at 5 mVs−1 in the 6 M KOH electrolyte. The electrode maintained ~65 % capacitance retention after 10,000 galvanostatic charge‐discharge (GCD) cycles. Furthermore, the assembled symmetric supercapacitor device exhibited the highest specific capacitance value of 124.7 F g−1 @ 5 mVs−1 within a potential span of 1.2 V. This device demonstrated the capability to illuminate light‐emitting diodes (LEDs) of different colors. The energy and power densities of the device were calculated as 26.66 Wh kg−1 and 9884.54 W kg−1 respectively. The stability performance of the device was ~57 % after 10,000 GCD cycles. These findings strongly suggest that the material and the device represent promising options for future energy storage applications.

show abstract

Flexible iron-doped Sr(OH)2 fibre wrapped tuberose for high-performance supercapacitor electrode

Cited by 25 publications

References 46 publications

Effect of Fe Doping on the Surface Morphology and Supercapacitor Properties of Sr(OH)₂ Thin Films: A Fractal Approach

Effect of Fe Doping on the Surface Morphology and Supercapacitor Properties of Sr(OH)₂ Thin Films: A Fractal Approach

Carbon Nanoarrays Embedded with Metal Compounds for High‐Performance Flexible Supercapacitors

Efficient Electrochemical Performance of Sr(OH)₂:MnO₂ Binary Composites for Solid State Symmetric Supercapacitor

Contact Info

Product

Resources

About

Flexible iron-doped Sr(OH)2 fibre wrapped tuberose for high-performance supercapacitor electrode

Cited by 25 publications

References 46 publications

Effect of Fe Doping on the Surface Morphology and Supercapacitor Properties of Sr(OH)2 Thin Films: A Fractal Approach

Effect of Fe Doping on the Surface Morphology and Supercapacitor Properties of Sr(OH)2 Thin Films: A Fractal Approach

Carbon Nanoarrays Embedded with Metal Compounds for High‐Performance Flexible Supercapacitors

Efficient Electrochemical Performance of Sr(OH)2:MnO2 Binary Composites for Solid State Symmetric Supercapacitor

Contact Info

Product

Resources

About

Effect of Fe Doping on the Surface Morphology and Supercapacitor Properties of Sr(OH)₂ Thin Films: A Fractal Approach

Effect of Fe Doping on the Surface Morphology and Supercapacitor Properties of Sr(OH)₂ Thin Films: A Fractal Approach

Efficient Electrochemical Performance of Sr(OH)₂:MnO₂ Binary Composites for Solid State Symmetric Supercapacitor