Serpent-cactus-like Co-doped Ni(OH)2/Ni3S2 hierarchical structure composed of ultrathin nanosheets for use in efficient asymmetric supercapacitors

2017 ◽  
Vol 5 (4) ◽  
pp. 1603-1613 ◽  
Author(s):  
Lin Ye ◽  
Lijun Zhao ◽  
Hang Zhang ◽  
Ping Zan ◽  
Shuai Gen ◽  
...  
Keyword(s):  
Hierarchical Structure ◽  
Temperature Control ◽  
Hydrothermal Reaction ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
One Pot ◽  
Ultrathin Nanosheets ◽  
Co Doped

A Co-doped Ni(OH)2/Ni3S2 hybrid was grown in situ on Ni foam (NiCo-10) via a one-pot hydrothermal reaction with two-step temperature control.

scholarly journals Facile In Situ Synthesis of Co(OH)2–Ni3S2 Nanowires on Ni Foam for Use in High-Energy-Density Supercapacitors

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 34
Author(s):  
Xuan Liang Wang ◽  
En Mei Jin ◽  
Jiasheng Chen ◽  
Parthasarathi Bandyopadhyay ◽  
Bo Jin ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Properties ◽  
Current Density ◽  
Hydrothermal Reaction ◽  
Active Material ◽  
High Energy ◽  
High Energy Density ◽  
Ni Foam ◽  
One Pot

Ni3S2 nanowires were synthesized in situ using a one-pot hydrothermal reaction on Ni foam (NF) for use in supercapacitors as a positive electrode, and various contents (0.3−0.6 mmol) of Co(OH)2 shells were coated onto the surfaces of the Ni3S2 nanowire cores to improve the electrochemical properties. The Ni3S2 nanowires were uniformly formed on the smooth NF surface, and the Co(OH)2 shell was formed on the Ni3S2 nanowire surface. By direct NF participation as a reactant without adding any other Ni source, Ni3S2 was formed more closely to the NF surface, and the Co(OH)2 shell suppressed the loss of active material during charging–discharging, yielding excellent electrochemical properties. The Co(OH)2–Ni3S2/Ni electrode produced using 0.5 mmol Co(OH)2 (Co0.5–Ni3S2/Ni) exhibited a high specific capacitance of 1837 F g−1 (16.07 F cm−2) at a current density of 5 mA cm−2, and maintained a capacitance of 583 F g−1 (16.07 F cm−2) at a much higher current density of 50 mA cm−2. An asymmetric supercapacitor (ASC) with Co(OH)2–Ni3S2 and active carbon displayed a high-power density of 1036 kW kg−1 at an energy density of 43 W h kg−1 with good cycling stability, indicating its suitability for use in energy storage applications. Thus, the newly developed core–shell structure, Co(OH)2–Ni3S2, was shown to be efficient at improving the electrochemical performance.

In situ confined vertical growth of a 1D-CuCo2S4 nanoarray on Ni foam covered by a 3D-PANI mesh layer to form a self-supporting hierarchical structure for high-efficiency oxygen evolution catalysis

Nanoscale ◽  
2019 ◽  
Vol 11 (25) ◽  
pp. 12326-12336 ◽  
Author(s):  
Wei Sun ◽  
Wei Wei ◽  
Nan Chen ◽  
Linlin Chen ◽  
Yin Xu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Hierarchical Structure ◽  
Electrode Material ◽  
High Efficiency ◽  
Artificial Turf ◽  
Ni Foam ◽  
Vertical Growth ◽  
Position And Orientation ◽  
First Time

Inspired by the patchwork of artificial turf, we defined the growth position and orientation of a CuCo2S4 nanoarray for the first time by electroplating a PANI mesh layer onto a Ni foam to obtain a self-supporting hierarchical electrode material.

A Ni1−xZnxS/Ni foam composite electrode with multi-layers: one-step synthesis and high supercapacitor performance

2016 ◽  
Vol 4 (33) ◽  
pp. 12929-12939 ◽  
Author(s):  
Xiaobing Wang ◽  
Jin Hao ◽  
Yichang Su ◽  
Fanggang Liu ◽  
Jian An ◽  
...  
Keyword(s):  
Composite Electrode ◽  
Hydrothermal Reaction ◽  
Ni Foam ◽  
Supercapacitor Electrode ◽  
Foam Composite ◽  
One Step ◽  
Supercapacitor Performance

Multi-layer NixZn1−xS/Ni foam composites were synthesized by a one-step hydrothermal reaction generating in situ growth on the Ni foam. The doping of Zn into the NixZn1−xS/Ni composite constructs the multi-layer nanostructure. The as-fabricated Ni1−xZnxS/Ni foam-2 h supercapacitor electrode shows outstanding rate properties.

NiCo2S4@Co(OH)2 core-shell nanotube arrays in situ grown on Ni foam for high performances asymmetric supercapacitors

2016 ◽  
Vol 312 ◽  
pp. 156-164 ◽  
Author(s):  
Rui Li ◽  
Senlin Wang ◽  
Zongchuan Huang ◽  
Fengxia Lu ◽  
Taobin He
Keyword(s):  
Nanotube Arrays ◽  
Core Shell ◽  
Ni Foam ◽  
Asymmetric Supercapacitors

Controllable synthesis of hierarchical NiCo2S4@Ni3S2 core–shell nanotube arrays with excellent electrochemical performance for aqueous asymmetric supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (99) ◽  
pp. 97352-97362 ◽  
Author(s):  
Taobin He ◽  
Senlin Wang ◽  
Fengxia Lu ◽  
Mucan Zhang ◽  
Xiao Zhang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Hydrothermal Reaction ◽  
Nanotube Arrays ◽  
Core Shell ◽  
Controllable Synthesis ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Positive Electrodes ◽  
Excellent Electrochemical Performance ◽  
Electrodes For Supercapacitors

Unique NiCo2S4@Ni3S2 core–shell nanotube arrays with a hierarchical structure, as promising positive electrodes for supercapacitors, were designed and synthesized on the surface of Ni foam via a hydrothermal reaction and electrodeposition method.

scholarly journals One-pot synthesis of MoS2/WS2 ultrathin nanoflakes with vertically aligned structure on indium tin oxide as a photocathode for enhanced photo-assistant electrochemical hydrogen evolution reaction

RSC Advances ◽  
2017 ◽  
Vol 7 (78) ◽  
pp. 49309-49319 ◽  
Author(s):  
Xinxin Jiang ◽  
Baoliang Sun ◽  
Ye Song ◽  
Meiling Dou ◽  
Jing Ji ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hierarchical Structure ◽  
Hydrogen Evolution Reaction ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Hydrothermal Reaction ◽  
Two Dimensional ◽  
One Pot ◽  
One Pot Synthesis ◽  
Vertically Aligned

A hierarchical structure composed of vertically aligned ultrathin two dimensional (2D) MoS2/WS2 nanosheets is fabricated through a facile one-pot hydrothermal reaction.

In situ grown Co3O4/Co(OH)2 hybrids as efficient electrocatalysts for water oxidation

2018 ◽  
Vol 42 (6) ◽  
pp. 4215-4222 ◽  
Author(s):  
Xiaoqiang Du ◽  
Hailong Pan ◽  
Zhi Yang
Keyword(s):  
Water Oxidation ◽  
Hydrothermal Reaction ◽  
Oxidation Catalysts ◽  
One Pot ◽  
Highly Efficient ◽  
Alkaline Electrolytes

A novel heterogeneous Co3O4/Co(OH)2 hybrid is prepared using a controllable facile one-pot hydrothermal reaction. The as-obtained hierarchical Co3O4/Co(OH)2 hybrids can serve as highly efficient electrocatalytic water oxidation catalysts for alkaline electrolytes.

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