Charge storage characteristics of mesoporous strontium titanate perovskite aqueous as well as flexible solid-state supercapacitor cell

Tomar, Anuj Kumar; Singh, Gurmeet; Sharma, Raj Kishore

doi:10.1016/j.jpowsour.2019.04.049

Cited by 75 publications

(30 citation statements)

References 67 publications

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“…An intercept of q versus

ν^{- 1 / 2}

ν \to \infty

gives the value of q total . Similarly, the outer surface contribution intercepts from the plot of 1/ q versus

ν^{1 / 2}

ν \to 0

. The results obtained from Trasatti plots clearly identify the charge‐storage process as diffusion controlled with maximum utilization of inner surface and a slight increment of the surface charge for MVS (8 %).…”

Section: Resultsmentioning

confidence: 99%

“…0. [41][42][43] The results obtained from Trasatti plots clearly identify the charge-storage process as diffusion controlled with maximum utilization of inner surface and as light incremento f the surfacec harge for MVS (8 %). This could be attributed to the more exposed inner area of the expandedi nterlayer structure.…”

Section: Electrochemical Performance Of Mvsmentioning

confidence: 87%

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Vanadium‐Incorporated Metallic (1‐T) Molybdenum Sulfide Nanoroses for High‐Energy‐Density Asymmetric Supercapacitors

et al. 2019

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“…An intercept of q versus

ν^{- 1 / 2}

ν \to \infty

gives the value of q total . Similarly, the outer surface contribution intercepts from the plot of 1/ q versus

ν^{1 / 2}

ν \to 0

Section: Resultsmentioning

confidence: 99%

Section: Electrochemical Performance Of Mvsmentioning

confidence: 87%

Vanadium‐Incorporated Metallic (1‐T) Molybdenum Sulfide Nanoroses for High‐Energy‐Density Asymmetric Supercapacitors

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Furthermore, the device showed high cycling stability of 99% after 5000 cycles, and good capacitance retention of 74.5% at 2.5 A.g −1 . The flexible and solid-state symmetric cell also exhibited high energy and Pd of 3.62 Wh.kg −1 and 965W.kg −1 , respectively [467].…”

Section: Two-dimensional (2d) Electrode Materials and Their Modificatmentioning

confidence: 97%

“…Moreover, the EDLC behaviour of the 2D-based electrode materials can be improved through the incorporation of the carbonaceous materials, as the extra pseudocapacitance can be obtained by the utilization of various TMOs and CPs. [467].…”

Section: Two-dimensional (2d) Electrode Materials and Their Modificatmentioning

confidence: 99%

Electrode Materials for Supercapacitors: A Review of Recent Advances

2020

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The advanced electrochemical properties, such as high energy density, fast charge–discharge rates, excellent cyclic stability, and specific capacitance, make supercapacitor a fascinating electronic device. During recent decades, a significant amount of research has been dedicated to enhancing the electrochemical performance of the supercapacitors through the development of novel electrode materials. In addition to highlighting the charge storage mechanism of the three main categories of supercapacitors, including the electric double-layer capacitors (EDLCs), pseudocapacitors, and the hybrid supercapacitors, this review describes the insights of the recent electrode materials (including, carbon-based materials, metal oxide/hydroxide-based materials, and conducting polymer-based materials, 2D materials). The nanocomposites offer larger SSA, shorter ion/electron diffusion paths, thus improving the specific capacitance of supercapacitors (SCs). Besides, the incorporation of the redox-active small molecules and bio-derived functional groups displayed a significant effect on the electrochemical properties of electrode materials. These advanced properties provide a vast range of potential for the electrode materials to be utilized in different applications such as in wearable/portable/electronic devices such as all-solid-state supercapacitors, transparent/flexible supercapacitors, and asymmetric hybrid supercapacitors.

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“…The storage devices are used in applications requiring many rapid charge/discharge cycles rather than long term compact energy storage. 6,7 The electrical properties of a supercapacitor such as capacitance and charge storage are highly reliant on the electrode materials that can be grouped into three general categories: (a) carbon materials with high specific surface area, [8][9][10][11] (b) conducting polymers, [12][13][14] and (c) metal oxides. [15][16][17] Carbon based materials are generally used in electrochemical double layer capacitors, however, they have low capacitance.…”

Section: Introductionmentioning

confidence: 99%

Sol‐gel derived mixed phase (Mn, Ti)‐oxides/graphene nanoplatelets for hybrid supercapacitors

2020

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In this investigation, (Mn, Ti)-oxides were prepared using pluronic 123 templating assisted sol-gel method. Sol-A with Ti precursor in ethanol was acidified with HCl whereas sol-B containing Mn precursor was prepared in ethanol containing 5 wt% pluronic 123 surfactant. Gelation was accomplished by the addition of de-ionized water. As-prepared gels were aged for 24 hours, dried at 80 C for 12 hours and calcined at 500 C to 1200 C for 5 hours to obtain powdered electrode materials, which were analyzed by x-ray diffraction, scanning electron microscopy/energy-dispersive x-ray, and Brunauer-Emmett-Teller (BET) surface area analysis. Hybrid supercapacitors were fabricated using the sol-gel derived (Mn, Ti)-oxides and Gr-nanoplatelets electrodes with aqueous KOH (potassium hydroxide) as electrolyte. Fabricated supercapacitors were charged with 2.0 V and 0.01 A for 10 minutes. Charged supercapacitors were tested via cyclic voltammetry to determine specific capacitance. For the powdered materials prepared with Mn:Ti at 65:35 wt% and calcined at 500 C, x-ray diffraction analysis revealed the presence of TiO 2-rutile, Mn 2 O 3 and Mn 3 O 4 as 20%, 60%, and 18%, respectively. At higher calcination temperature, TiO 2-rutile and Mn 2 O 3 phases were found to be absent with the presence of higher perovskite (TiMnO 3) phase. Both pore volume and BET specific surface area was found to decrease with increase in calcination temperature. The specific capacitance was found be dependent on Mn:Ti wt% used to prepare the powdered materials as well as the calcination conditions. The gel prepared with Mn:Ti of 30:70 wt% followed by 2-step calcination yielded a maximum specific capacitance.

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Charge storage characteristics of mesoporous strontium titanate perovskite aqueous as well as flexible solid-state supercapacitor cell

Cited by 75 publications

References 67 publications

Vanadium‐Incorporated Metallic (1‐T) Molybdenum Sulfide Nanoroses for High‐Energy‐Density Asymmetric Supercapacitors

Vanadium‐Incorporated Metallic (1‐T) Molybdenum Sulfide Nanoroses for High‐Energy‐Density Asymmetric Supercapacitors

Electrode Materials for Supercapacitors: A Review of Recent Advances

Sol‐gel derived mixed phase (Mn, Ti)‐oxides/graphene nanoplatelets for hybrid supercapacitors

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