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Preparation method of high-performance supercapacitor electrode

A supercapacitor, high-performance technology, applied in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, nanotechnology for materials and surface science, etc., to achieve short reaction time, high yield, and excellent specific capacitance performance Effect

Active Publication Date: 2018-02-27
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are still deficiencies in the reported methods, and it is urgent to optimize and improve

Method used

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  • Preparation method of high-performance supercapacitor electrode
  • Preparation method of high-performance supercapacitor electrode
  • Preparation method of high-performance supercapacitor electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1, α-MoO annealed for 4 hours 3 Preparation of Electrode Sheets

[0026] This example prepares α-MoO according to the following steps 3 Electrode sheet:

[0027] (1) h-MoO 3 Preparation of Nanomaterials

[0028] Will 0.005M (NH 4 ) 6 Mo 7 o 24 4H 2 O solution with 2M HNO 3 The solution was mixed uniformly at a volume ratio of 8:1, then placed in a constant temperature water bath at 85°C and heated for 60 minutes; the resulting product was ultrasonically treated, filtered, and dried to obtain h-MoO 3 nanomaterials;

[0029] (2)α-MoO 3 Preparation of Nanolaminated Materials

[0030] h-MoO obtained in step (1) 3 Nanomaterials are placed in a muffle furnace, annealed at 500°C (the time required to rise from room temperature to 500°C is set to 100 minutes) for 4 hours, and then naturally cooled to room temperature to obtain α-MoO 3Nano laminated materials;

[0031] (3) Preparation of supercapacitor electrodes

[0032] The α-MoO obtained in step (2) 3...

Embodiment 2

[0038] Example 2, α-MoO annealed for 4 hours 3 Preparation of Electrode Sheets

[0039] This example prepares α-MoO according to the following steps 3 Electrode sheet:

[0040] (1) h-MoO 3 Preparation of Nanomaterials

[0041] Will 0.005M (NH 4 ) 6 Mo 7 o 24 4H 2 O solution with 2M HNO 3 The solution was mixed evenly at a volume ratio of 8:1, and then placed in a constant temperature water bath at 85°C for 60 minutes; the resulting product was ultrasonically treated, filtered, and dried to obtain h-MoO 3 nanomaterials;

[0042] (2)α-MoO 3 Preparation of Nanolaminated Materials

[0043] h-MoO obtained in step (1) 3 Nanomaterials are placed in a muffle furnace, annealed at 500°C (the time required to rise from room temperature to 500°C is set to 100 minutes) for 8 hours, and then naturally cooled to room temperature to obtain α-MoO 3 Nano laminated materials;

[0044] (3) Preparation of supercapacitor electrodes

[0045] The α-MoO obtained in step (2) 3 The nano...

Embodiment 3

[0050] Example 3, α-MoO annealed for 12 hours 3 electrode sheet preparation

[0051] This example prepares α-MoO according to the following steps 3 Electrode sheet:

[0052] (1) h-MoO 3 Preparation of Nanomaterials

[0053] Will 0.005M (NH 4 ) 6 Mo 7 o 24 4H 2 O solution with 2M HNO 3 The solution was mixed evenly at a volume ratio of 8:1, and then placed in a constant temperature water bath at 85°C for 60 minutes; the resulting product was ultrasonically treated, filtered, and dried to obtain h-MoO 3 nanomaterials;

[0054] (2)α-MoO 3 Preparation of Nanolaminated Materials

[0055] h-MoO obtained in step (1) 3 Nanomaterials are placed in a muffle furnace, annealed at 500°C (the time required to rise from room temperature to 500°C is set to 100 minutes) for 12 hours, and then naturally cooled to room temperature to obtain α-MoO 3 Nano laminated materials;

[0056] (3) Preparation of supercapacitor electrodes

[0057] The α-MoO obtained in step (2) 3 The nano-l...

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Abstract

The invention discloses a preparation method of a high-performance supercapacitor electrode. The method is characterized by comprising the steps of firstly, preparing an h-MoO3 nanometer material by means of a hydrothermal method; secondly, conducting annealing treatment on the h-MoO3 nanometer material, and obtaining an alpha-MoO3 nanometer laminated material; mixing the alpha-MoO3 nanometer laminated material as an active substance with a conductive substance and a binder to prepare the supercapacitor electrode. When the current density is 2Ag-1, the specific capacitance performance of the MoO3 electrode prepared by means of the method is excellent and can reach 1417Fg-1 which is the highest value publicly reported under the same test condition on the basis of the material at present; after the MoO3 electrode prepared by means of the method is charged and dischargd 2,000 times under the condition that the current density is 10Ag-1, and the capacitance retention rate is high and can reach 60%.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor preparation methods using metal oxides as electrode materials, and mainly relates to high-performance molybdenum trioxide (MoO 3 ) electrode preparation. Background technique [0002] Energy storage devices have important applications in projects such as mobile portable equipment, backup power supplies, communication equipment, electrification of transportation lines, and coupling of renewable energy in the grid. At present, energy storage devices generally include batteries and capacitors, both of which are based on different electrochemical energy storage principles, resulting in different electrochemical characteristics of the two. Compared with lithium-ion batteries, electric double layer capacitors (also known as supercapacitors) have shorter charging times, higher power and longer cycle life. However, the energy density of carbon-based supercapacitors currently in commercial use is ...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/24H01G11/26H01G11/46B82Y30/00
CPCY02E60/13H01G11/86B82Y30/00H01G11/24H01G11/26H01G11/46
Inventor 李国华李盼盼操梦雅晋华东李婉青陈志成
Owner ANHUI UNIVERSITY
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