Solvothermal synthesis of weakly crystalline cobalt–nickel sulfide to obtain high pseudocapacitance

CoNi LDH-6 with a nano-petal structure was prepared, which exhibited excellent rate performance and long-term stability as a supercapacitor electrode.

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

10.21203/rs.3.rs-184247/v1 ◽

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.

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

Journal of Materials Chemistry A ◽

10.1039/c6ta00540c ◽

2016 ◽

Vol 4 (25) ◽

pp. 9744-9749 ◽

Cited By ~ 36

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.

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Walnut kernel-like iron-cobalt-nickel sulfide nanosheets directly grown on nickel foam: A binder-free electrocatalyst for high-efficiency oxygen evolution reaction

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2020.12.011 ◽

2021 ◽

Vol 587 ◽

pp. 141-149

Author(s):

Ru-Lan Zhang ◽

Jiao-Jiao Duan ◽

Jiu-Ju Feng ◽

Li-Ping Mei ◽

Qian-Li Zhang ◽

...

Keyword(s):

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

Nickel Sulfide ◽

High Efficiency ◽

Nickel Foam ◽

Iron Cobalt ◽

Cobalt Nickel ◽

Binder Free

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COBALT(II)/NICKEL(II) COMPLEXES OF DITHIOACETYLACETONE [M(SacSac)2](M = Co, Ni) AS SINGLE SOURCE PRECURSORS FOR COBALT/NICKEL SULFIDE NANOSTRUCTURES

International Journal of Nanoscience ◽

10.1142/s0219581x11009234 ◽

2011 ◽

Vol 10 (04n05) ◽

pp. 815-822 ◽

Cited By ~ 4

Author(s):

KARTHIK RAMASAMY ◽

WEERAKANYA MANEEPRAKORN ◽

NASIR IQBAL ◽

MOHAMMAD AZAD MALIK ◽

PAUL O'BRIEN

Keyword(s):

Nickel Sulfide ◽

Chemical Vapor ◽

Xrd Analysis ◽

Trioctylphosphine Oxide ◽

Cobalt Sulfide ◽

Chemical Compositions ◽

Single Source ◽

Tem Analysis ◽

Single Source Precursors ◽

Cobalt Nickel

Cobalt(II)/Nickel(II) complexes of 4-thiopent-3-ene-2-thione (SacSac), [ M(SacSac) 2]( M = Co, Ni ) have been used as single source precursors (SSPs) for the preparation of cobalt/nickel sulfide thin films by aerosol-assisted chemical vapor deposition (AACVD). Cobalt or nickel sulfide nanoparticles were grown by thermal decomposition of the precursor in hot trioctylphosphine oxide (TOPO) or hexadecylamine (HDA). XRD analysis showed that all samples of cobalt or nickel sulfide are of the sulfur deficient phases ( Ni9S8, Co9S8, Ni7S6 , or Ni3S2 ). SEM and TEM analysis showed that nickel sulfide formed nanowires, nanorods and spheres; cobalt sulfide formed plate like structures and spheres. The chemical compositions of the nanoparticles can be controlled by varying temperature or the capping agents.

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