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.

A one-step, cost-effective green method to in situ fabricate Ni(OH)2 hexagonal platelets on Ni foam as binder-free supercapacitor electrode materials

2015 ◽  
Vol 3 (5) ◽  
pp. 1953-1960 ◽  
Author(s):  
Lingjie Li ◽  
Jing Xu ◽  
Jinglei Lei ◽  
Jie Zhang ◽  
Frank McLarnon ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Cost Effective ◽  
Ni Foam ◽  
Supercapacitor Electrode ◽  
One Step ◽  
Binder Free ◽  
Supercapacitor Electrode Materials

The Ni(OH)2 hexagonal platelets were in situ fabricated on Ni foam as a binder-free supercapacitor electrode material with high performance and excellent cycling stability by a one-step, cost-effective, green hydrothermal treatment of three-dimensional (3D) Ni foam in a 15 wt% H2O2 aqueous solution.

scholarly journals In Situ Fabrication of Activated Carbon from a Bio-Waste Desmostachya bipinnata for the Improved Supercapacitor Performance

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Gopal Krishna Gupta ◽  
Pinky Sagar ◽  
Sumit Kumar Pandey ◽  
Monika Srivastava ◽  
A. K. Singh ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Power Density ◽  
Supercapacitor Electrode ◽  
In Situ Fabrication ◽  
Transmission Electron ◽  
Good Energy ◽  
Supercapacitor Performance ◽  
Operating Potential

AbstractHerein, we demonstrate the fabrication of highly capacitive activated carbon (AC) using a bio-waste Kusha grass (Desmostachya bipinnata), by employing a chemical process followed by activation through KOH. The as-synthesized few-layered activated carbon has been confirmed through X-ray powder diffraction, transmission electron microscopy, and Raman spectroscopy techniques. The chemical environment of the as-prepared sample has been accessed through FTIR and UV–visible spectroscopy. The surface area and porosity of the as-synthesized material have been accessed through the Brunauer–Emmett–Teller method. All the electrochemical measurements have been performed through cyclic voltammetry and galvanometric charging/discharging (GCD) method, but primarily, we focus on GCD due to the accuracy of the technique. Moreover, the as-synthesized AC material shows a maximum specific capacitance as 218 F g−1 in the potential window ranging from − 0.35 to + 0.45 V. Also, the AC exhibits an excellent energy density of ~ 19.3 Wh kg−1 and power density of ~ 277.92 W kg−1, respectively, in the same operating potential window. It has also shown very good capacitance retention capability even after 5000th cycles. The fabricated supercapacitor shows a good energy density and power density, respectively, and good retention in capacitance at remarkably higher charging/discharging rates with excellent cycling stability. Henceforth, bio-waste Kusha grass-derived activated carbon (DP-AC) shows good promise and can be applied in supercapacitor applications due to its outstanding electrochemical properties. Herein, we envision that our results illustrate a simple and innovative approach to synthesize a bio-waste Kusha grass-derived activated carbon (DP-AC) as an emerging supercapacitor electrode material and widen its practical application in electrochemical energy storage fields.

3D in-situ hollow carbon fiber/carbon nanosheet/Fe3C@Fe3O4 by solventless one-step synthesis and its superior supercapacitor performance

2017 ◽  
Vol 252 ◽  
pp. 215-225 ◽  
Author(s):  
Jaechul Ju ◽  
Minjae Kim ◽  
Seokhoon Jang ◽  
Yeongseon Kim ◽  
Yongheum Choi ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
One Step ◽  
Supercapacitor Performance ◽  
Hollow Carbon

Ni2P Nanosheets/Ni Foam Composite Electrode for Long-Lived and pH-Tolerable Electrochemical Hydrogen Generation

2015 ◽  
Vol 7 (4) ◽  
pp. 2376-2384 ◽  
Author(s):  
Yanmei Shi ◽  
You Xu ◽  
Sifei Zhuo ◽  
Jingfang Zhang ◽  
Bin Zhang
Keyword(s):  
Composite Electrode ◽  
Hydrogen Generation ◽  
Ni Foam ◽  
Foam Composite

NiFe (sulfur)oxyhydroxide porous nanoclusters/Ni foam composite electrode drives a large-current-density oxygen evolution reaction with an ultra-low overpotential

2019 ◽  
Vol 7 (32) ◽  
pp. 18816-18822 ◽  
Author(s):  
Yanqing Wang ◽  
Yuemeng Li ◽  
Liping Ding ◽  
Zhe Chen ◽  
Aaron Ong ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Current Density ◽  
Oxygen Evolution Reaction ◽  
Composite Electrode ◽  
Ni Foam ◽  
Large Current ◽  
Foam Composite ◽  
Large Current Density ◽  
Low Overpotential

A NiFe (sulfur)oxyhydroxide porous nanoclusters/Ni foam composite electrode was fabricated and can drive a large-current-density oxygen evolution reaction with an ultra-low overpotential.

Nickel Oxide/Nickel Foam Composite as Supercapacitor Electrode via Electrophoretic Deposition

2015 ◽  
Vol 654 ◽  
pp. 58-64 ◽  
Author(s):  
Z. Gonzalez ◽  
Antonio Javier Sanchez-Herencia ◽  
Begoña Ferrari ◽  
Alvaro Caballero ◽  
Julian Morales
Keyword(s):  
Nickel Oxide ◽  
Electrophoretic Deposition ◽  
Nickel Foam ◽  
Reaction Medium ◽  
Cost Effective ◽  
Chemical Precipitation ◽  
Ni Foam ◽  
Supercapacitor Electrode ◽  
One Pot ◽  
Foam Composite

Nickel oxide/Ni foam composite was studied as an electrode for electrochemical capacitors. The material has been processed by a simple, green and cost-effective electrophoretic deposition (EPD) method directly from the post-reaction medium in an one-pot synthesis and its later heat treatment.NiO films were obtained after calcination (325 and 450ᵒC) of β-Ni(OH)2deposits. β-Ni(OH)2nanoplatelets were produced by chemical precipitation of Ni precursors and the aid of ultrasound, free of modifiers. The stabilization of the hydroxide powder in suspension in different mixtures of Ethanol:Water (4:1, 9:1 and 19:1) and the optimization of the EPD parameters allowed coating the commercial Ni foams via colloidal processing.Electrochemical properties of the electrodes were evaluated by cyclic voltammetry (CV) showing significant differences in terms of specific capacitance of 192 and 79 F/g for the electrodes calcined at 325 and 450ᵒC, respectively.

In situ formation of Ni3S2–Cu1.8S nanosheets to promote hybrid supercapacitor performance

2019 ◽  
Vol 7 (18) ◽  
pp. 11044-11052 ◽  
Author(s):  
Yadong Liu ◽  
Guoqiang Liu ◽  
Xiong Nie ◽  
Anqiang Pan ◽  
Shuquan Liang ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Potential Applications ◽  
One Step ◽  
Supercapacitor Performance ◽  
In Situ Formation

Ni3S2–Cu1.8S nanosheets were fabricated by a one-step co-sulfurization with in situ ion exchange, demonstrating potential applications in hybrid supercapacitors.

scholarly journals Nanoflower Ni(OH)2 grown in situ on Ni foam for high-performance supercapacitor electrode materials

2021 ◽  
Vol 5 (20) ◽  
pp. 5236-5246
Author(s):  
Xuerui Yi ◽  
Huapeng Sun ◽  
Neil Robertson ◽  
Caroline Kirk
Keyword(s):  
Specific Capacitance ◽  
High Performance ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Ni Foam ◽  
Supercapacitor Electrode ◽  
Supercapacitor Electrode Materials

Nanoflower Ni(OH)2 shows exceptionally high specific capacitance.

A triple-layered PPy@NiCo LDH/FeCo2O4 hybrid crystalline structure with high electron conductivity and abundant interfaces for supercapacitors and oxygen evolution

CrystEngComm ◽  
2021 ◽  
Vol 23 (11) ◽  
pp. 2262-2268
Author(s):  
Jing He ◽  
Zhufeng Hu ◽  
Kuan Deng ◽  
Renjun Zhao ◽  
Xingbin Lv ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Crystalline Structure ◽  
Hydrothermal Reaction ◽  
Electron Conductivity ◽  
High Electron ◽  
Triple Layer ◽  
One Step

A PPy@NiCo LDH/FeCo2O4 triple-layer hybrid with bi-continuous conductive networks is fabricated via a novel one-step hydrothermal reaction and in situ polymerization.

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