CoSx nanomaterial used as super capacitor electrode and preparation method of CoSx nanomaterial

A technology of supercapacitors and nanomaterials, applied in the direction of hybrid capacitor electrodes, nanotechnology for materials and surface science, chemical instruments and methods, etc., can solve the problems of being unable to provide high energy density and high power density at the same time, and achieve distribution Dense, easy to operate, and increase the effect of specific surface area

Active Publication Date: 2015-09-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In terms of energy storage and energy supply, traditional batteries and capacitors cannot meet the needs of use because they cannot provide high energy density and high power density at the same time, but s...

Method used

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  • CoSx nanomaterial used as super capacitor electrode and preparation method of CoSx nanomaterial
  • CoSx nanomaterial used as super capacitor electrode and preparation method of CoSx nanomaterial
  • CoSx nanomaterial used as super capacitor electrode and preparation method of CoSx nanomaterial

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Embodiment 1

[0039] 1) Precursor formation: use an analytical balance to weigh Co(NO 3 ) 2 ·6H 2 O 、CO(NH 2 ) 2 , NH 4 Cl was dissolved in deionized water, stirred on a magnetic stirrer at room temperature to form a solution with uniform concentration; then transferred to a polytetrafluoroethylene-lined reactor, and the previously prepared nickel foam substrate was immersed in the reactor In the solution, and then placed in a 120 ° C oven for 6 h, naturally cooled to room temperature. After the end, the substrate was taken out and washed and dried to obtain the precursor Co(CO 3 ) 0.35 Cl 0.20 (OH) 1.10 The substrate of the nanowires.

[0040] 2) Vulcanization treatment: Weigh Na 2 S is dissolved in deionized water and configured as 0.65mol / L Na 2 S aqueous solution and transferred to the hydrothermal reactor, with the precursor Co(CO) obtained in step 1 3 ) 0.35 Cl 0.20 (OH) 1.10 The substrate of the nanowires continues to serve as the substrate, immersed in the Na in the r...

Embodiment 2

[0042] 1) Precursor formation: use an analytical balance to weigh Co(NO 3 ) 2 ·6H 2 O 、CO(NH 2 ) 2 , NH 4 Cl was dissolved in deionized water, stirred on a magnetic stirrer at room temperature to form a solution with uniform concentration; then transferred to a polytetrafluoroethylene-lined reactor, and the previously prepared nickel foam substrate was immersed in the reactor In the solution, and then placed in an oven at 110 ° C for 8 h, naturally cooled to room temperature. After the end, the substrate was taken out and washed and dried to obtain the precursor Co(CO 3 ) 0.35 Cl 0.20 (OH) 1.10 The substrate of the nanowires.

[0043] 2) Vulcanization treatment: Weigh Na 2 S is dissolved in deionized water and configured as 0.08mol / L Na 2 S aqueous solution and transferred to the hydrothermal reactor, with the long Co(CO obtained in step 1 3 ) 0.35 Cl 0.20 (OH) 1.10 The substrate of the nanowires continues to serve as the substrate, immersed in the Na in the rea...

Embodiment 3

[0045] 1) Precursor formation: use an analytical balance to weigh Co(NO 3 ) 2 ·6H 2 O 、CO(NH 2 ) 2 , NH 4 Cl was dissolved in deionized water, stirred on a magnetic stirrer at room temperature to form a solution with uniform concentration; then transferred to a polytetrafluoroethylene-lined reactor, and the previously prepared nickel foam substrate was immersed in the reactor In the solution, and then placed in an oven at 100 ° C for 6 h, naturally cooled to room temperature. After the end, the substrate was taken out and washed and dried to obtain the precursor Co(CO 3 ) 0.35 Cl 0.20 (OH) 1.10 The substrate of the nanowires.

[0046] 2) Vulcanization treatment: Weigh Na 2 S is dissolved in deionized water and configured as 0.08mol / L Na 2 S aqueous solution and transferred to the hydrothermal reactor, with the long Co(CO obtained in step 1 3 ) 0.35 Cl 0.20 (OH) 1.10 The substrate of the nanowires continues to serve as the substrate, immersed in the Na in the rea...

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Abstract

The invention discloses a CoSx nanomaterial used as super capacitor electrode and preparation method of the CoSx nanomaterial. The nanomaterial is composed of two parts, namely a CoSx core of a nanowire structure and CoSx nanosheets distributed on the surface of the nanowire in a leaf form. The CoSx nanomaterial is prepared by use of a two-step hydrothermal synthesis method, and the method comprises the following steps: preparing a precursor Co(CO3)0.35Cl0.20(OH)1.10 nanowire by use of a hydrothermal reaction method, and then performing sulfidizing treatment on the precursor by use of a hydrothermal reaction method, thereby obtaining the CoSx nanomaterial. The nanomaterial is tested by use of a triple-electrode system, and the nano-electrode material shows high specific capacity of 2383F/g under the current density of 10A/g and still has the specific capacity of 1488F/g after 1000 charge-discharge cycles, and the charge transfer impedance of the nano-electrode material is 1.11omega/cm<2>. The CoSx nano-electrode material prepared by use of the method has the advantages of high specific capacity, good cycle performance, simple preparation method and low cost.

Description

technical field [0001] The invention relates to electrode materials for supercapacitors, in particular to the field of electrode materials for nanostructured sulfide supercapacitors. Background technique [0002] The pace of development in today's society is getting faster and faster, and its price is based on the huge consumption of energy and resources. Now people have realized that this rough way of energy consumption may cause various problems, such as resource waste and resource depletion and environmental pollution. Therefore, new energy sources and new energy storage and use methods need to be developed to solve the existing crisis. In terms of energy storage and energy supply, traditional batteries and capacitors cannot meet the needs of use because they cannot provide high energy density and high power density at the same time, but supercapacitors have this advantage. Excellent characteristics such as wide range, short charging time, and environmental protection m...

Claims

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Application Information

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IPC IPC(8): C01G51/00H01G11/30H01G11/24B82Y30/00
CPCY02E60/13
Inventor 吕建国袁禹亮
Owner ZHEJIANG UNIV
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