Hydrothermal Synthesis of CoMoO4/Co9S8 Nanorod Arrays on Nickel Foam for High-Performance Asymmetric Supercapacitors with High Energy Density

Mesoporous and hollow Ni–Zn–Co–S nanosword arrays (NSAs) have been successfully grown on nickel foam (NF) through a simple two-step method, which would hold great promise for high-performance supercapacitors.

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Fabrication of Hierarchical NiMoO4/NiMoO4 Nanoflowers on Highly Conductive Flexible Nickel Foam Substrate as a Capacitive Electrode Material for Supercapacitors with Enhanced Electrochemical Performance

Energies ◽

10.3390/en12061143 ◽

2019 ◽

Vol 12 (6) ◽

pp. 1143 ◽

Cited By ~ 6

Author(s):

Anil Yedluri ◽

Tarugu Anitha ◽

Hee-Je Kim

Keyword(s):

Energy Density ◽

Electrochemical Performance ◽

Specific Capacitance ◽

Electrode Material ◽

High Performance ◽

Nickel Foam ◽

High Specific Capacitance ◽

High Energy ◽

High Energy Density ◽

Charge Discharge

Hierarchical NiMoO4/NiMoO4 nanoflowers were fabricated on highly conductive flexible nickel foam (NF) substrates using a facile hydrothermal method to achieve rapid charge-discharge ability, high energy density, long cycling lifespan, and higher flexibility for high-performance supercapacitor electrode materials. The synthesized composite electrode material, NF/NiMoO4/NiMoO4 with a nanoball-like NF/NiMoO4 structure on a NiMoO4 surface over a NF substrate, formed a three-dimensional interconnected porous network for high-performance electrodes. The novel NF/NiMoO4/NiMoO4 nanoflowers not only enhanced the large surface area and increased the electrochemical activity, but also provided an enhanced rapid ion diffusion path and reduced the charge transfer resistance of the entire electrode effectively. The NF/NiMoO4/NiMoO4 composite exhibited significantly improved supercapacitor performance in terms of a sustained cycling life, high specific capacitance, rapid charge-discharge capability, high energy density, and good rate capability. Electrochemical analysis of the NF/NiMoO4/NiMoO4 nanoflowers fabricated on the NF substrate revealed ultra-high electrochemical performance with a high specific capacitance of 2121 F g−1 at 12 mA g−1 in a 3 M KOH electrolyte and 98.7% capacitance retention after 3000 cycles at 14 mA g−1. This performance was superior to the NF/NiMoO4 nanoball electrode (1672 F g−1 at 12 mA g−1 and capacitance retention 93.4% cycles). Most importantly, the SC (NF/NiMoO4/NiMoO4) device displayed a maximum energy density of 47.13 W h kg−1, which was significantly higher than that of NF/NiMoO4 (37.1 W h kg−1). Overall, the NF/NiMoO4/NiMoO4 composite is a suitable material for supercapacitor applications.

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Rapid in situ growth of β-Ni(OH)2 nanosheet arrays on nickel foam as an integrated electrode for supercapacitors exhibiting high energy density

Dalton Transactions ◽

10.1039/d0dt00687d ◽

2020 ◽

Vol 49 (15) ◽

pp. 4956-4966 ◽

Cited By ~ 7

Author(s):

Jingbo Li ◽

Yu Liu ◽

Wei Cao ◽

Nan Chen

Keyword(s):

Energy Density ◽

High Performance ◽

Nickel Foam ◽

High Energy ◽

High Energy Density ◽

In Situ Growth ◽

Nanosheet Arrays

A rapid in situ method was employed to synthesize the β-Ni(OH)2@NF integrated electrode for a high performance ASC device.

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A three-dimensional graphene framework-enabled high-performance stretchable asymmetric supercapacitor

Journal of Materials Chemistry A ◽

10.1039/c7ta09041b ◽

2018 ◽

Vol 6 (4) ◽

pp. 1802-1808 ◽

Cited By ~ 29

Author(s):

Ke Li ◽

Yanshan Huang ◽

Jingjing Liu ◽

Mansoor Sarfraz ◽

Phillips O. Agboola ◽

...

Keyword(s):

Energy Density ◽

High Performance ◽

Three Dimensional ◽

High Energy ◽

Cycling Stability ◽

High Energy Density ◽

Asymmetric Supercapacitor ◽

Asymmetric Supercapacitors ◽

Superior Cycling Stability

Three-dimensional graphene frameworks enable the development of stretchable asymmetric supercapacitors with a record high energy density of 77.8 W h kg−1, and also excellent stretchability and superior cycling stability.

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