Preparation method of Co9S8/Ni-Co-Mo oxyhydroxide hollow core-shell electrode material

An oxyhydroxide and ni-co-mo technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems that limit wide application and the electrodes are not flexible.

Inactive Publication Date: 2020-12-25
JILIN INST OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The national invention patent with the application number CN201410524809.4 discloses a synthesis method of transition metal hydroxide / oxyhydroxide ultrathin nanosheets, specifically disclosing a method with mild reaction conditions, simple preparation process, high repeatability and strong universal applicability. Ultra-thin nanosheets, but this invention needs to coat the prepared active material on the nickel foam, and the added binder increases the electrode resistance; the national invention patent with application number CN201410328867.X discloses a self-oxidizing nanoporous The method for preparing a nickel-cobalt-manganese / oxyhydroxide ternary composite electrode specifically discloses a nanoporous metal prepared by adjusting the ratio range of nickel-cobalt-manganese alloy, and further autoxidized to obtain an oxyhydroxide layer. The electrode has a three-dimensional double Unicom nanoporous core-shell structure, the specific capacitance and energy density have been improved, but its electrodes are not flexible, which limits its wide application

Method used

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  • Preparation method of Co9S8/Ni-Co-Mo oxyhydroxide hollow core-shell electrode material
  • Preparation method of Co9S8/Ni-Co-Mo oxyhydroxide hollow core-shell electrode material
  • Preparation method of Co9S8/Ni-Co-Mo oxyhydroxide hollow core-shell electrode material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: (1) with 0.06 M Co (NO 3 ) 2 ·6H 2 O, 0.3M CH 4 N 2 O, 0.13 M NH 4 Dissolve F in 64 mL of deionized water, transfer it to an 80 mL autoclave after fully dissolving and mixing, put the carbon cloth (CC) into the autoclave, and react at 120 °C for 5 hours to obtain basic cobalt carbonate grown on the carbon cloth nanowires, and then transfer the carbon cloth on which the basic cobalt carbonate nanowires grew to a layer filled with 0.01 M Na 2 S aqueous solution in an 80 mL autoclave was reacted at 120 °C for 8 h to obtain hollow Co with a length of about 10–11 μm 9 S 8 nanotubes; (2) 12.5 mM Ni(NO 3 ) 2 ·6H 2 O, 37.5 mM Co(NO 3 ) 2 ·6H 2 O, 22.5 mM Na 2 MoO 4 2H 2 O, 12.5 mM C 6 h 12 N 4 and 25 mM CH 4 N 2 O was dissolved in 30 mL of distilled water in turn, transferred to a 40 mL autoclave after fully dissolved, reacted hydrothermally at 120 °C for 3 h, cleaned ultrasonically, and dried in vacuum. 9 S 8 Epitaxial growth of Co on the su...

Embodiment 2

[0016] Embodiment 2: 0.06 M Co (NO 3 ) 2 ·6H 2 O, 0.3M CH 4 N 2 O, 0.13 M NH 4 F was dissolved in 64 mL of deionized water, and transferred to an 80 mL autoclave after being fully dissolved and mixed. Put the carbon cloth (CC) into the autoclave and react at 120 °C for 5 h to obtain basic carbonic acid grown on the carbon cloth. Cobalt nanowires, and then transfer the carbon cloth with basic cobalt carbonate nanowires to a layer filled with 0.01 M Na 2 S aqueous solution in an 80 mL autoclave was reacted at 120 °C for 8 h to obtain hollow Co with a length of about 10–11 μm 9 S 8 nanotubes; (2) 25 mM Ni(NO 3 ) 2 ·6H 2 O, 75 mM Co(NO 3 ) 2 ·6H 2 O, 45 mM Na 2 MoO4 2H 2 O, 25 mM C 6 h 12 N 4 and 50 mM CH 4 N 2 O was dissolved in 30 mL of distilled water in turn, transferred to a 40 mL autoclave after fully dissolved, reacted hydrothermally at 120 °C for 3 h, cleaned ultrasonically, and dried in vacuum. 9 S 8 Epitaxial growth of Co on the surface of nanotubes ...

Embodiment 3

[0017] Embodiment 3: (1) with 0.06 M Co (NO 3 ) 2 ·6H 2 O, 0.3M CH 4 N 2 O, 0.13 M NH 4 Dissolve F in 64 mL of deionized water, transfer it to an 80 mL autoclave after fully dissolving and mixing, put the carbon cloth (CC) into the autoclave, and react at 120 °C for 5 hours to obtain basic cobalt carbonate grown on the carbon cloth nanowires, and then transfer the carbon cloth on which the basic cobalt carbonate nanowires grew to a layer filled with 0.01 M Na 2 S aqueous solution in an 80 mL autoclave was reacted at 120 °C for 8 h to obtain hollow Co with a length of about 10–11 μm 9 S 8 nanotubes; (2) 50 mM Ni(NO 3 ) 2 ·6H 2 O, 150 mM Co(NO 3 ) 2 ·6H 2 O, 90 mM Na 2 MoO 4 2H 2 O, 50 mM C 6 h 12 N 4 and 100 mM CH 4 N 2 O was dissolved in 30 mL of distilled water in turn, transferred to a 40 mL autoclave after fully dissolved, reacted hydrothermally at 120 °C for 3 h, cleaned ultrasonically, and dried in vacuum. 9 S 8 Epitaxial growth of Co on the surface ...

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Abstract

The invention particularly relates to a preparation method of a carbon cloth in-situ growth hollow three-dimensional Co9S8 / NiCoMo oxyhydroxide core-shell electrode material. Hollow Co9S8 nanotubes arebeneficial to electrolyte permeation, cobalt sulfide has high conductivity, so that the structural stability of the material is improved. Epitaxially grown NiCoMo oxyhydroxide nanosheets have high specific capacitance, a formed hollow three-dimensional network structure provides channels and more active sites for electron and ion transmission and permeation, so that the electrochemical performance is improved. An electrochemical performance test result shows that the specific capacity of a single electrode reaches 6.2 F.cm<-2> when the current density is 3mA cm<-1>.

Description

technical field [0001] The invention relates to the technical field of supercapacitor electrode materials, in particular to a carbon cloth in-situ grown hollow three-dimensional core-shell Co 9 S 8 / Ni-Co-Mo oxyhydroxide electrode material preparation method. [0002] technical background [0003] Supercapacitor is a new type of energy storage device whose performance is between that of batteries and traditional capacitors. It has the characteristics of high power density, fast charging and discharging, and long service life. It is one of the most promising green energy sources. , with the development of science and technology, traditional energy has long been unable to meet people's growing actual needs, and energy problems have become increasingly serious. Therefore, the development of new energy conversion devices and materials has become an urgent problem to be solved, and energy conversion technologies such as supercapacitors are becoming more and more New electrode ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/32H01G11/24H01G11/30H01G11/46H01G11/86
CPCH01G11/24H01G11/30H01G11/32H01G11/46H01G11/86
Inventor 韩丹丹潘怡帆魏金鹤赵远申烨高冬岩
Owner JILIN INST OF CHEM TECH
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