Facile synthesis of NiO@Ni(OH)2-α-MoO3 nanocomposite for enhanced solid-state symmetric supercapacitor application

Manibalan, Gunasekaran; Govindaraj, Yoganandan; Yesuraj, Johnbosco; Kuppusami, P.; Murugadoss, Govindhasamy; Murugavel, Ramaswamy; Kumar, Manavalan Rajesh

doi:10.1016/j.jcis.2020.10.032

Cited by 97 publications

(29 citation statements)

References 91 publications

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“…After 10,000 times cycles, the capacity retention of the device is 75.0%, indicating its superior cycling stability. The device possesses an energy density of 33.7 W h kg −1 at 1396.7 W kg −1 , which is superior to the previous reports [35][36][37][38][39][40][41].…”

Section: Resultsmentioning

confidence: 61%

Facile synthesis of dendritic Ni3S2 nanosheet arrays for hybrid supercapacitor electrodes

Ding

2021

Ionics

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Nanostructured Ni 3 S 2 is considered to be one of the most promising energy storage materials due to its high theoretical specific capacitance and excellent conductivity. In this work, we prepare dendritic Ni 3 S 2 nanosheet arrays by one-step solvothermal method. The as-prepared samples as binder-free electrode present a specific capacity of 863.55 C g −1 at 1 A g −1 . The assembled hybrid supercapacitor owns an energy density of 33.7 W h kg −1 at 1396.7 W kg −1 . Such excellent electrochemical performance can be ascribed to its unique structure and the direct contact between Ni 3 S 2 and Ni foam, which can ensure rapid ion and electron transfers during redox reactions.

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Section: Resultsmentioning

confidence: 61%

Facile synthesis of dendritic Ni3S2 nanosheet arrays for hybrid supercapacitor electrodes

Ding

2021

Ionics

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“…The high specific surface area of Cu(OH) 2 @Ni(OH) 2 resulted from the unique core–shell structure greatly could improve the electrochemical activity. [ 29–32 ]…”

Section: Resultsmentioning

confidence: 99%

Core–Shell Nanostructured Hybrid of Nickel Hydroxide Supported on Copper Hydroxide Nanorod Arrays Used as Advanced Supercapacitors with High Efficiency and Ultraperformance

Tian

Zhong

et al. 2021

Advanced Sustainable Systems

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continuously. Therefore, the exploration of new energy storage materials as well as the development of energy storage devices has become the core issues for the utilization and transformation of new energies. [1,2] It is well-known that supercapacitors, as a kind of nontoxic and environment-friendly apparatus for electricity storage and conversion in practical applications, have higher power density and longer cycling capacity, which overcome some drawbacks of traditional dielectric capacitors and chemical batteries. Unfortunately, much lower energy densities of supercapacitors have prevented their extensive applications in energy storage devices.At present, transition metal hydroxides, as a new type of pseudocapacitor materials, have been widely explored and further used in the fields of catalysis, electrochemistry, separation, and biotechnology. As a result, they have been attracting extensive attention from both the academic and industrial circles. Likewise, some inherent advantages of these transition metal hydroxides can be observed including superior redox activity, steerable chemical composition, diversiform physical morphology enormous, Langmuir surface area exposure, inherent high stability of atoms, and good anion exchange behavior. Therefore, the transition metal hydroxide has been broadly used for different electrode materials in the realm of supercapacitors. [3,4] Nevertheless, the electrochemical performance plus the practical application of supercapacitors prepared with transition metal hydroxides are usually hindered by their inherent low electrical conductivities from 10 −13 to 10 −17 S cm −1 . [5] Nickel hydroxide (Ni(OH) 2 ) is a classic transition-metal hydroxide applied in a variety of fields, which has been deemed to be an auspicious electrode on account of its remarkable specific capacitance, low cost, simple operation, and various physical morphologies. [6] However, it has been found that Ni(OH) 2 has poor electrical conductivity, which seriously hinders the transmission of electrons and slows down the redox reaction, resulting in poor rate capability. [7][8][9] Generally, one common strategy for tackling this problem is based on the combination of Ni(OH) 2 and conductive frameworks such as carbon materials, AC, graphene, and copperThe fascinating search for ultraefficient and high-powered supercapacitors has stimulated continuous exploration of diverse energy storage materials like transition metal hydroxides with core-shell structure. Thus in this paper, a novel core-shell hybrid electrode material of nickel hydroxide (Ni(OH) 2 ) supported on copper hydroxide nanorod arrays (Cu(OH) 2 NAs), which is constructed on copper foam as the substrate by an in situ chemical oxidation reaction accompanied by chemical bath deposition, is reported. As a result, it is found that the pre-fabricated Cu(OH) 2 @Ni(OH) 2 electrode has a remarkable areal capacitance of 9.27 F cm −2 and good cycling performance (retains 92.38% after 6000 cycles) compared to its counterpart Cu(OH) 2 nanorods (88.57%). Additio...

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“…At the same time, the NiCo(OH) 4 -NiO-110 electrode material not only has a small specific surface area, but also decreases the distance between the nanosheets, which affects the free movement of electrons and ions in the charging and discharging process and limits the specific capacitance. During the hydrothermal process, the following reactions occurred [23,24]:…”

Section: Compositionmentioning

confidence: 99%

“…The capacity retention rate reached 94% after 3000 charge-discharge cycles. Manibalan et al [23], prepared NiO@Ni(OH) 2 -Î±-MoO 3 nanocomposites with nanosheet and nanospherical heterostructures using a hydrothermal method. They showed a high specific capacity of 445 F g −1 at the current density of 1 A g −1 .…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrothermal Method Temperature on the Spherical Flowerlike Nanostructures NiCo(OH)4-NiO

et al. 2022

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NiCo(OH)4-NiO composite electrode materials were prepared using hydrothermal deposition and electrophoretic deposition. NiCo(OH)4 is spherical and flowerlike, composed of nanosheets, and NiO is deposited on the surface of NiCo(OH)4 in the form of nanorods. NiCo(OH)4 has a large specific surface area and can provide more active sites. Synergistic action with NiO deposits on the surface can provide a higher specific capacitance. In order to study the influence of hydrothermal reaction temperature on the properties of NiCo(OH)4, the prepared materials of NiCo(OH)4-NiO, the hydrothermal reaction temperatures of 70 °C, 90 °C, 100 °C, and 110 °C were used for comparison. The results showed that the NiCo(OH)4-NiO-90 specific capacitance of the prepared electrode material at its maximum when the hydrothermal reaction temperature is 90 °C. The specific capacitance of the NiCo(OH)4-NiO-90 reaches 2129 F g−1 at the current density of 1 A g−1 and remains 84% after 1000 charge–discharge cycles.

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Facile synthesis of NiO@Ni(OH)2-α-MoO3 nanocomposite for enhanced solid-state symmetric supercapacitor application

Cited by 97 publications

References 91 publications

Facile synthesis of dendritic Ni3S2 nanosheet arrays for hybrid supercapacitor electrodes

Facile synthesis of dendritic Ni3S2 nanosheet arrays for hybrid supercapacitor electrodes

Core–Shell Nanostructured Hybrid of Nickel Hydroxide Supported on Copper Hydroxide Nanorod Arrays Used as Advanced Supercapacitors with High Efficiency and Ultraperformance

Effect of Hydrothermal Method Temperature on the Spherical Flowerlike Nanostructures NiCo(OH)4-NiO

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