3D hierarchical porous CuS flower-dispersed CNT arrays on nickel foam as a binder-free electrode for supercapacitors

2019 ◽  
Vol 43 (27) ◽  
pp. 10906-10914 ◽  
Author(s):  
Yiling Quan ◽  
Mingyuan Zhang ◽  
Guoxiang Wang ◽  
Lu Lu ◽  
Zhixin Wang ◽  
...  
Keyword(s):  
Solvothermal Method ◽  
Nickel Foam ◽  
High Energy ◽  
High Energy Density ◽  
Electrochemical Supercapacitors ◽  
Porous Copper ◽  
Hierarchical Porous ◽  
One Step ◽  
Binder Free ◽  
Cnt Arrays

To fabricate excellent electrochemical supercapacitors, 3D porous copper sulfide flower dispersed carbon nanotube on nickel foam (CuS–CNTs@NF) with high energy density and stability were synthesized via a simple one-step solvothermal method.

scholarly journals Synthesis and Characterization of a NiCo2O4@NiCo2O4 Hierarchical Mesoporous Nanoflake Electrode for Supercapacitor Applications

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1292 ◽  
Author(s):  
Xin Chen ◽  
Hui Li ◽  
Jianzhou Xu ◽  
F. Jaber ◽  
F. Musharavati ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Energy Storage ◽  
Nickel Foam ◽  
Morphological Characteristics ◽  
Negative Electrode ◽  
High Energy ◽  
High Energy Density ◽  
Hierarchical Porous ◽  
Galvanostatic Deposition ◽  
Binder Free

In this study, we synthesized binder-free NiCo2O4@NiCo2O4 nanostructured materials on nickel foam (NF) by combined hydrothermal and cyclic voltammetry deposition techniques followed by calcination at 350 °C to attain high-performance supercapacitors. The hierarchical porous NiCo2O4@NiCo2O4 structure, facilitating faster mass transport, exhibited good cycling stability of 83.6% after 5000 cycles and outstanding specific capacitance of 1398.73 F g−1 at the current density of 2 A·g−1, signifying its potential for energy storage applications. A solid-state supercapacitor was fabricated with the NiCo2O4@NiCo2O4 on NF as the positive electrode and the active carbon (AC) was deposited on NF as the negative electrode, delivering a high energy density of 46.46 Wh kg−1 at the power density of 269.77 W kg−1. This outstanding performance was attributed to its layered morphological characteristics. This study explored the potential application of cyclic voltammetry depositions in preparing binder-free NiCo2O4@NiCo2O4 materials with more uniform architecture for energy storage, in contrast to the traditional galvanostatic deposition methods.

Controllable synthesis of 3D binary nickel–cobalt hydroxide/graphene/nickel foam as a binder-free electrode for high-performance supercapacitors

2015 ◽  
Vol 3 (23) ◽  
pp. 12530-12538 ◽  
Author(s):  
Yang Bai ◽  
Weiqi Wang ◽  
Ranran Wang ◽  
Jing Sun ◽  
Lian Gao
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Nickel Foam ◽  
High Energy ◽  
High Energy Density ◽  
Cobalt Hydroxide ◽  
Controllable Synthesis ◽  
Nickel Cobalt ◽  
Binder Free

Graphene facilitates the formation of a 3D porous binder-free electrode with controllable morphology for high energy density supercapacitors.

High energy density hybrid supercapacitors derived from novel Ni3Se2 nanowires in situ constructed on porous nickel foam

2021 ◽  
Author(s):  
Wei Li ◽  
Tianqi Chen ◽  
Ao Li ◽  
Peng Shi ◽  
Ming Wu ◽  
...  
Keyword(s):  
Reaction Time ◽  
Hydrothermal Reaction ◽  
Nickel Foam ◽  
High Energy ◽  
High Energy Density ◽  
Porous Nickel ◽  
Hybrid Supercapacitors ◽  
Storage Performance ◽  
One Step

A novel Ni3Se2 nanowires are synthesized in situ on the surface of nickel foam through a one-step hydrothermal reaction under the reaction time of 24 h, and it demonstrates excellent energy storage performance for hybrid supercapacitors.

Construction of MOF-derived hollow Ni–Zn–Co–S nanosword arrays as binder-free electrodes for asymmetric supercapacitors with high energy density

Nanoscale ◽  
2018 ◽  
Vol 10 (29) ◽  
pp. 14171-14181 ◽  
Author(s):  
Youzhang Huang ◽  
Liang Quan ◽  
Tianqing Liu ◽  
Qidi Chen ◽  
Daoping Cai ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Nickel Foam ◽  
High Energy ◽  
High Energy Density ◽  
Great Promise ◽  
Step Method ◽  
Asymmetric Supercapacitors ◽  
Binder Free

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.

scholarly journals Hierarchical Porous, N-Containing Carbon Supports for High Loading Sulfur Cathodes

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 408
Author(s):  
Jae-Woo Park ◽  
Hyun Jin Hwang ◽  
Hui-Ju Kang ◽  
Gazi A. K. M. Rafiqul Bari ◽  
Tae-Gyu Lee ◽  
...  
Keyword(s):  
High Energy ◽  
High Energy Density ◽  
High Loading ◽  
Carbon Supports ◽  
Structure Directing Agent ◽  
Shuttle Effect ◽  
Main Challenge ◽  
Hierarchical Porous ◽  
Hollow Carbon ◽  
A Minor

The lithium-polysulfide (LiPS) dissolution from the cathode to the organic electrolyte is the main challenge for high-energy-density lithium-sulfur batteries (LSBs). Herein, we present a multi-functional porous carbon, melamine cyanurate (MCA)-glucose-derived carbon (MGC), with superior porosity, electrical conductivity, and polysulfide affinity as an efficient sulfur support to mitigate the shuttle effect. MGC is prepared via a reactive templating approach, wherein the organic MCA crystals are utilized as the pore-/micro-structure-directing agent and nitrogen source. The homogeneous coating of spherical MCA crystal particles with glucose followed by carbonization at 600 °C leads to the formation of hierarchical porous hollow carbon spheres with abundant pyridinic N-functional groups without losing their microstructural ordering. Moreover, MGC enables facile penetration and intensive anchoring of LiPS, especially under high loading sulfur conditions. Consequently, the MGC cathode exhibited a high areal capacity of 5.79 mAh cm−2 at 1 mA cm−2 and high loading sulfur of 6.0 mg cm−2 with a minor capacity decay rate of 0.18% per cycle for 100 cycles.

scholarly journals 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 ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1143 ◽  
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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