One-Pot Fabrication of Layeredα-Phase Nickel-Cobalt Hydroxides as Advanced Electrode Materials for Pseudocapacitors

ChemPlusChem ◽  
2014 ◽  
Vol 80 (1) ◽  
pp. 181-187 ◽  
Author(s):  
Haichao Chen ◽  
Jianjun Jiang ◽  
Li Zhang ◽  
Yuandong Zhao ◽  
Danqing Guo ◽  
...  
Keyword(s):  
Electrode Materials ◽  
One Pot ◽  
Nickel Cobalt ◽  
Cobalt Hydroxides

Facile synthesis of nickel–cobalt sulfide/reduced graphene oxide hybrid with enhanced capacitive performance

RSC Advances ◽  
2015 ◽  
Vol 5 (72) ◽  
pp. 58777-58783 ◽  
Author(s):  
Xiaoqing Cai ◽  
Xiaoping Shen ◽  
Lianbo Ma ◽  
Zhenyuan Ji ◽  
Lirong kong
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Performance ◽  
Reduced Graphene Oxide ◽  
Electrode Materials ◽  
Cobalt Sulfide ◽  
Facile Synthesis ◽  
One Pot ◽  
Nickel Cobalt ◽  
Excellent Electrochemical Performance ◽  
Reduced Graphene

A facile one-pot refluxing method was developed to prepare nickel–cobalt sulfide/reduced graphene oxide (RGO) hybrids. The as-synthesized NiCo2S4/RGO hybrids as electrode materials for supercapacitors exhibit excellent electrochemical performance.

Structural evolution and sulfuration of nickel cobalt hydroxides from 2D to 1D on 3D diatomite for supercapcitors

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yi Wang ◽  
Xiushuang Wang ◽  
Xingjian Dai ◽  
Kailin Li ◽  
Zhihao Bao ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Transition Metal ◽  
Electrode Materials ◽  
Structural Evolution ◽  
Active Components ◽  
Nickel Cobalt ◽  
Aggregation Problem ◽  
Cobalt Hydroxides

Transition metal nickel cobalt hydroxides widely are used as electrode materials for supercapacitors due to its intriguing active components properties. Nevertheless, the aggregation problem and poor electrical conductivity severely hinder...

scholarly journals Spinel of Nickel-Cobalt Oxide with Rod-Like Architecture as Electrocatalyst for Oxygen Evolution Reaction

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 3918
Author(s):  
Anna Dymerska ◽  
Wojciech Kukułka ◽  
Marcin Biegun ◽  
Ewa Mijowska
Keyword(s):  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Active Sites ◽  
Solvothermal Reaction ◽  
Step Method ◽  
One Pot ◽  
Widespread Application ◽  
Nickel Cobalt ◽  
Slow Kinetics ◽  
Nickel Cobalt Oxide

The renewable energy technologies require electrocatalysts for reactions, such as the oxygen and/or hydrogen evolution reaction (OER/HER). They are complex electrochemical reactions that take place through the direct transfer of electrons. However, mostly they have high over-potentials and slow kinetics, that is why they require electrocatalysts to lower the over-potential of the reactions and enhance the reaction rate. The commercially used catalysts (e.g., ruthenium nanoparticles—Ru, iridium nanoparticles—Ir, and their oxides: RuO2, IrO2, platinum—Pt) contain metals that have poor stability, and are not economically worthwhile for widespread application. Here, we propose the spinel structure of nickel-cobalt oxide (NiCo2O4) fabricated to serve as electrocatalyst for OER. These structures were obtained by a facile two-step method: (1) One-pot solvothermal reaction and subsequently (2) pyrolysis or carbonization, respectively. This material exhibits novel rod-like morphology formed by tiny spheres. The presence of transition metal particles such as Co and Ni due to their conductivity and electron configurations provides a great number of active sites, which brings superior electrochemical performance in oxygen evolution and good stability in long-term tests. Therefore, it is believed that we propose interesting low-cost material that can act as a super stable catalyst in OER.

Microwave synthesis of sodium nickel-cobalt phosphates as high-performance electrode materials for supercapacitors

2019 ◽  
Vol 791 ◽  
pp. 929-935 ◽  
Author(s):  
Meilin Liu ◽  
Ningzhao Shang ◽  
Xiaoyu Zhang ◽  
Shutao Gao ◽  
Chun Wang ◽  
...  
Keyword(s):  
Microwave Synthesis ◽  
High Performance ◽  
Electrode Materials ◽  
Nickel Cobalt
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