Microwave-anion-exchange route to ultrathin cobalt-nickel-sulfide nanosheets for hybrid supercapacitors

2019 ◽  
Vol 362 ◽  
pp. 576-587 ◽  
Author(s):  
Souleymen Rafai ◽  
Chen Qiao ◽  
Muhammad Naveed ◽  
Zhitao Wang ◽  
Waqar Younas ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Nickel Sulfide ◽  
Hybrid Supercapacitors ◽  
Cobalt Nickel

Cobalt-nickel silicate hydroxide on amorphous carbon derived from bamboo leaves for hybrid supercapacitors

2019 ◽  
Vol 375 ◽  
pp. 121938 ◽  
Author(s):  
Yifu Zhang ◽  
Chen Wang ◽  
Hanmei Jiang ◽  
Qiushi Wang ◽  
Jiqi Zheng ◽  
...  
Keyword(s):  
Amorphous Carbon ◽  
Hybrid Supercapacitors ◽  
Cobalt Nickel ◽  
Nickel Silicate ◽  
Bamboo Leaves

Solvothermal Synthesis of Weakly Crystalline Cobalt-Nickel Sulfide to Obtain High Pseudocapacitance

2021 ◽  
Author(s):  
Nao Zhang ◽  
Ya-bo Zhu ◽  
Tingting Xie ◽  
Chao Shi ◽  
Qian Xu ◽  
...  
Keyword(s):  
Nickel Sulfide ◽  
Retention Rate ◽  
Solvent System ◽  
Transmission Efficiency ◽  
Cobalt Sulfide ◽  
Synthesis Time ◽  
Electrochemical Tests ◽  
Cobalt Nickel ◽  
Nickel Cobalt ◽  
A Current

Abstract In this paper, a dual solvent system of glycerol and ethylene glycerol was used to prepare nickel cobalt sulfide with different crystallinity. It was found that the crystallinity and morphology of the product had an important effect on its electrochemical performance. Therefore, the synthesis time was chosen between 1 and 18 h to control the crystallinity. The best sample (GENCS-3) was prepared within 3hour, and had flower-like structures. Its electrochemical tests showed that it had good ion transmission efficiency and excellent specific capacitance (1816F/g at 1A/g, 1620F/g at 10 A/g). Especially, its retention rate could arrive at 89.5% after 1000 cycles under a current density of 5A/g. The weak crystalline nickel-cobalt sulfide is easy to form porous structure, which can significantly increase capacitance, also maintaining good rate performance.

scholarly journals A highly active hydrogen evolution electrocatalyst based on a cobalt–nickel sulfide composite electrode

2016 ◽  
Vol 4 (25) ◽  
pp. 9744-9749 ◽  
Author(s):  
Davide Ansovini ◽  
Coryl Jing Jun Lee ◽  
Chin Sheng Chua ◽  
Lay Ting Ong ◽  
Hui Ru Tan ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Hydrogen Production ◽  
Decomposition Method ◽  
Nickel Sulfide ◽  
Composite Electrode ◽  
Active Hydrogen ◽  
Ni Foam ◽  
Thermal Decomposition Method ◽  
Highly Active ◽  
Cobalt Nickel

A cobalt–nickel sulfide composite electrode synthesized onto Ni foam through a facile thermal decomposition method showed remarkable activity towards electrocatalytic hydrogen production.

Rational design of forest-like nickel sulfide hierarchical architectures with ultrahigh areal capacity as a binder-free cathode material for hybrid supercapacitors

2018 ◽  
Vol 6 (27) ◽  
pp. 13178-13190 ◽  
Author(s):  
G. Seeta Rama Raju ◽  
E. Pavitra ◽  
Goli Nagaraju ◽  
S. Chandra Sekhar ◽  
Seyed Majid Ghoreishian ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Rational Design ◽  
Nickel Sulfide ◽  
Cycling Stability ◽  
Hybrid Supercapacitors ◽  
Binder Free ◽  
Hierarchical Architectures ◽  
Excellent Cycling Stability ◽  
Areal Capacity

The forest-like NiS hierarchical architectures demonstrated superior electrochemical performance with excellent cycling stability.

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