Evolution and recent developments of high performance electrode material for supercapacitors: A review

Patel, Karan Kamleshbhai; Singhal, Tushar; Pandey, Varun; Sumangala, T. P.; Sreekanth, M.

doi:10.1016/j.est.2021.103366

Cited by 128 publications

(44 citation statements)

References 265 publications

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“…The shape of galvanostatic charging and discharging curves is close to linear. In other words, it is close to the shape of corresponding dependences for conventional electrostatic capacitors [ 1 , 2 , 3 , 4 , 5 ]. ECSCs are divided into double-layer capacitors (DLCs), pseudocapacitors (PsCs) and hybrid supercapacitors (HSCs).…”

Section: Introductionsupporting

confidence: 66%

Supercapacitor Properties of rGO-TiO2 Nanocomposite in Two-component Acidic Electrolyte

et al. 2022

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The electrochemical properties of the highly porous reduced graphene oxide/titanium dioxide (rGO/TiO2) nanocomposite were studied to estimate the possibility of using it as a supercapacitor electrode. Granular aerogel rGO/TiO2 was used as an initial material for the first time of manufacturing the electrode. For the aerogel synthesis, industrial TiO2 Hombikat UV100 with a high specific surface area and anatase structure was used, and the aerogel was carried out with hydrazine vapor. Porous structure and hydrophilic–hydrophobic properties of the nanocomposite were studied with a method of standard contact porosimetry. This is important for a supercapacitor containing an aqueous electrolyte. It was found that the hydrophilic specific surface area of the nanocomposite was approximately half of the total surface area. As a result of electrochemical hydrogenation in the region of zero potential according to the scale of a standard hydrogen electrode, a reversible Faraday reaction with high recharge rate (exchange currents) was observed. The characteristic charging time of the indicated Faraday reaction does not exceed several tens of seconds, which makes it possible to consider the use of this pseudocapacitance in the systems of fast energy storage such as hybrid supercapacitors. Sufficiently high limiting pseudo-capacitance (about 1200 C/g TiO2) of the reaction was obtained.

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Section: Introductionsupporting

confidence: 66%

Supercapacitor Properties of rGO-TiO2 Nanocomposite in Two-component Acidic Electrolyte

et al. 2022

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Section: Introductionmentioning

confidence: 99%

“…Owing to the continuous consumption of chemical energy and the deterioration of the environment, it is an urgent need to design an energy storage device with excellent performance. [1][2][3][4] Supercapacitors (SC) have received extensive attention due to their ultra-high-power density and long cycle life. [5][6][7][8][9][10] The electrochemical performance of supercapacitors is affected by the electrode material and electrode structure, but the electrochemical performance of a single electrode material is not well.…”

Section: Introductionmentioning

confidence: 99%

NiCo₂S₄ Nanocone Arrays/Phosphorus‐Doped Hollow Carbon Nanospheres for High‐Performance Supercapacitors

et al. 2022

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A soft template and hydrothermal method are used to prepare NiCo2S4 nanocone arrays/P‐doped hollow carbon nanospheres (NCS NCAs/PHCS). PHCS is loaded with a large number of vertically grown NCS NCAs on the surface due to phosphorus doping. PHCS is an excellent conductive base material and it can effectively alleviate the structural collapse of NCS NCAs during charging and discharging because of its hollow structure. NCS NCAs with lots of active sites provide fast diffusion channels and excellent electron transmission channels. The synergistic effect between NCS NCAs and PHCS causes the electrode material to show excellent electrochemical properties, such as high specific capacitance (761 C ⋅ g−1 at 1 A ⋅ g−1) and excellent cycle stability (the capacitance retention rate is 88.6 % after 10, 000 cycles at 20 A ⋅ g−1). The NCS NCAs/PHCS composite is also assembled with PHCS as an asymmetric supercapacitor. It shows a remarkable energy density of 46.5 Wh ⋅ kg−1 at the power density of 777.5 W ⋅ kg−1. These findings confirm that the NCS NCAs/PHCS composite is an excellent electrode material of supercapacitors.

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“…Oxidative desulfurization (ODS) is regarded as a sustainable alternative to traditional HDS because of its excellent capability in removing highly refractory sterically hindered thiophenes under mild conditions. − According to the principle of ODS, sulfides in fuel are first oxidized to sulfones or sulfoxides, which could be readily separated by absorption or extraction. − H 2 O 2 has generally been employed as the oxidizer because of its high oxidability and cleanliness. − However, as a decomposable oxidizer, the use of H 2 O 2 on a large scale is restricted because of safety concerns. Consequently, the utilization of O 2 instead of H 2 O 2 in the chemical industry is highly desirable and has attracted extensive attention in the past few years. − However, neutral O 2 molecules in the ground state have a triplet-spin configuration, which is unable to enter the chemical reaction. For industrial applications, it is desirable to proceed with AODS under low temperatures and atmospheric pressure to avoid high energy consumption, which, in turn, calls for high-performance catalysts to get past the big challenge of low-temperature activation of O 2 . , …”

Section: Introductionmentioning

confidence: 99%

VO_x Nanoclusters on CePO₄ Nanowires for Oxidative Desulfurization of Thiophene

Yang

Song

Chen

et al. 2022

ACS Appl. Nano Mater.

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Aerobic oxidative desulfurization (AODS) promises to be a sustainable alternative technology for diesel desulfurization, which necessitates the efficient aerobic oxidation of thiophenic sulfides at mild conditions. Here we synthesize cerium phosphate (CePO 4 ) nanowire-supported vanadium oxide (VO x ) nanoclusters, controllably creating coordination-unsaturated V sites for boosting the AODS reaction. We propose that the electron transfer from a Ce species to a V site gives rise to the donor state and enhances its electron-donating capability for the activation of O 2 . We show that the catalyst possesses a higher specific activity than state-of-the-art vanadium oxide catalysts, activates reaction at 90 °C (5.17 mmol g −1 h −1 ), and achieves rapid conversion of various thiophenes under mild conditions. The catalyst demonstrates excellent durability in six cycles of reuse by maintaining an unchanged catalytic performance, a chemical structure, and a physical structure and is expected to act as a sustainable, efficient, and stable AODS catalyst.

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Evolution and recent developments of high performance electrode material for supercapacitors: A review

Cited by 128 publications

References 265 publications

Supercapacitor Properties of rGO-TiO2 Nanocomposite in Two-component Acidic Electrolyte

Supercapacitor Properties of rGO-TiO2 Nanocomposite in Two-component Acidic Electrolyte

NiCo₂S₄ Nanocone Arrays/Phosphorus‐Doped Hollow Carbon Nanospheres for High‐Performance Supercapacitors

VO_x Nanoclusters on CePO₄ Nanowires for Oxidative Desulfurization of Thiophene

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Evolution and recent developments of high performance electrode material for supercapacitors: A review

Cited by 128 publications

References 265 publications

Supercapacitor Properties of rGO-TiO2 Nanocomposite in Two-component Acidic Electrolyte

Supercapacitor Properties of rGO-TiO2 Nanocomposite in Two-component Acidic Electrolyte

NiCo2S4 Nanocone Arrays/Phosphorus‐Doped Hollow Carbon Nanospheres for High‐Performance Supercapacitors

VOx Nanoclusters on CePO4 Nanowires for Oxidative Desulfurization of Thiophene

Contact Info

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NiCo₂S₄ Nanocone Arrays/Phosphorus‐Doped Hollow Carbon Nanospheres for High‐Performance Supercapacitors

VO_x Nanoclusters on CePO₄ Nanowires for Oxidative Desulfurization of Thiophene