Ionic Liquid‐Controlled Growth of NiCo 2 S 4 3D Hierarchical Hollow Nanoarrow Arrays on Ni Foam for Superior Performance Binder Free Hybrid Supercapacitors

Small ◽  
2018 ◽  
pp. 1804318 ◽  
Author(s):  
Yingxue Cui ◽  
Jing Zhang ◽  
Cen Jin ◽  
Yanxia Liu ◽  
Wenhao Luo ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Superior Performance ◽  
Controlled Growth ◽  
Ni Foam ◽  
Hybrid Supercapacitors ◽  
Binder Free

In situ preparation of MgCo2O4 nanosheets on Ni-foam as a binder-free electrode for high performance hybrid supercapacitors

2018 ◽  
Vol 47 (19) ◽  
pp. 6722-6728 ◽  
Author(s):  
Subbukalai Vijayakumar ◽  
Sadayappan Nagamuthu ◽  
Kwang-Sun Ryu
Keyword(s):  
High Performance ◽  
Specific Capacity ◽  
Ni Foam ◽  
Hybrid Supercapacitors ◽  
In Situ Preparation ◽  
Binder Free

MgCo2O4 nanosheets grown on Ni-foam exhibited a maximum specific capacity of 947 C g−1 at 2 A g−1.

scholarly journals In Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo2S4/Ni Electrodes for Solid-State Hybrid Supercapacitors

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7114
Author(s):  
M. Mohamed Ismail ◽  
Zhong-Yun Hong ◽  
M. Arivanandhan ◽  
Thomas Chung-Kuang Yang ◽  
Guan-Ting Pan ◽  
...  
Keyword(s):  
Solid State ◽  
Hydrothermal Method ◽  
Negative Electrode ◽  
Ni Foam ◽  
Hybrid Supercapacitors ◽  
Storage Behavior ◽  
Binder Free ◽  
Cbd Method ◽  
Power Densities

Herein, we report a comparison of the electrochemical performance of two kinds of NiCo2S4-based electrodes for solid-state hybrid supercapacitors (HSCs). For the binder-free electrode, NiCo2S4 was grown on Ni foam by the chemical bath deposition (CBD) method. For the binder-using electrode, NiCo2S4 powder was synthesized by the hydrothermal method. FESEM images depicted the hierarchical nanostructure of NiCo2S4 synthesized by the hydrothermal method and uniform distribution of nanostructured NiCo2S4 grown on Ni foam by the CBD method. Half-cell studies of both NiCo2S4 electrodes showed them exhibiting battery-type charge storage behavior. To assemble HSCs, NiCo2S4 and activated carbon were used as a positive and negative electrode, respectively. Electrochemical studies of the HSCs showed that the accessible potential window was wide, up to 2.6 V, through cyclic voltammetry (CV) analysis. Chronopotentiometry (CP) studies revealed that the energy and power densities of binder-using HSC were 51.24 Wh/kg and 13 kW/kg at 1 Ag−1, respectively, which were relatively higher than those of the binder-free HSC. The binder-free HSC showed 52% cyclic stability, relatively higher than that of the binder-using HSC. Both HSCs, with unique benefits and burdens on energy storage performance, are discussed in this work.

Controlled growth of NiMoO4·H2O nanoflake and nanowire arrays on Ni foam for superior performance of asymmetric supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 67785-67793 ◽  
Author(s):  
Chen Qing ◽  
Yanan Liu ◽  
Xiaodan Sun ◽  
Xiaxia OuYang ◽  
Hai Wang ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Nanowire Arrays ◽  
Superior Performance ◽  
Controlled Growth ◽  
Ni Foam ◽  
Asymmetric Supercapacitors

Hydrous NiMoO4 nanoflake arrays on Ni foam show superior cycle ability and specific capacitance.

scholarly journals Controlled Nanostructuration of Cobalt Oxyhydroxide Electrode Material for Hybrid Supercapacitors

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2325
Author(s):  
Ronan Invernizzi ◽  
Liliane Guerlou-Demourgues ◽  
François Weill ◽  
Alexia Lemoine ◽  
Marie-Anne Dourges ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Energy Storage ◽  
Specific Surface ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Hybrid Supercapacitors ◽  
Cobalt Oxyhydroxide ◽  
Precipitation Medium ◽  
The Impact

Nanostructuration is one of the most promising strategies to develop performant electrode materials for energy storage devices, such as hybrid supercapacitors. In this work, we studied the influence of precipitation medium and the use of a series of 1-alkyl-3-methylimidazolium bromide ionic liquids for the nanostructuration of β(III) cobalt oxyhydroxides. Then, the effect of the nanostructuration and the impact of the different ionic liquids used during synthesis were investigated in terms of energy storage performances. First, we demonstrated that forward precipitation, in a cobalt-rich medium, leads to smaller particles with higher specific surface areas (SSA) and an enhanced mesoporosity. Introduction of ionic liquids (ILs) in the precipitation medium further strongly increased the specific surface area and the mesoporosity to achieve well-nanostructured materials with a very high SSA of 265 m2/g and porosity of 0.43 cm3/g. Additionally, we showed that ILs used as surfactant and template also functionalize the nanomaterial surface, leading to a beneficial synergy between the highly ionic conductive IL and the cobalt oxyhydroxide, which lowers the resistance charge transfer and improves the specific capacity. The nature of the ionic liquid had an important influence on the final electrochemical properties and the best performances were reached with the ionic liquid containing the longest alkyl chain.

Hierarchical porous CeO2 micro rice supported Ni foam binder free electrode and its enhanced pseudocapacitor performance by redox additive electrolyte

2021 ◽  
Author(s):  
Arunpandiyan Surulinathan ◽  
Raja Annamalai ◽  
Vinoth S ◽  
Alagarsamy Pandikumar ◽  
Ayyaswamy Arivarasan
Keyword(s):  
High Performance ◽  
Ni Foam ◽  
Hierarchically Porous ◽  
Hierarchical Porous ◽  
The Future ◽  
Binder Free ◽  
Supported Ni

Developing high-performance, robust, and economic supercapacitor is a promising path to the future electric vehicle’s technology. Herein, a hierarchically porous CeO2 micro rice was attached on the Ni foam surface...

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