Spherical flower-like carbon-based/magnesium-aluminum hydroxide supercapacitor electrode material and preparation method thereof
A magnesium-aluminum hydroxide and supercapacitor technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve problems such as poor cycle stability, and achieve improved specific capacitance, simple equipment, and improved cycle stability. and the effect of electrochemical performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0022] The invention provides a preparation method of a spherical flower-shaped carbon-based / magnesium-aluminum hydroxide supercapacitor electrode material. More specifically, carbon spheres are first synthesized, and then magnesium salts and aluminum salts are added for hydrothermal reaction, so that the layered The binary metal hydroxide is effectively combined with the carbon material, which improves the problem of poor cycle stability of the binary metal hydroxide and increases the specific surface area of the electrode material to increase the specific capacity of the supercapacitor. The present invention comprises the following concrete steps:
[0023] 1) Preparation of carbon spheres
[0024] Using cheap glucose as carbon source, dark brown carbon spheres were obtained by hydrothermal method, which were collected by centrifugation. Wash multiple times with deionized water and ethanol, and dry overnight in an oven;
[0025] 2) Preparation of magnesium aluminum hydrox...
Embodiment 1
[0035] 1) Preparation of carbon spheres
[0036] Prepare a 0.5 mol / L aqueous glucose solution, transfer it to a reaction kettle lined with tetrafluoroethylene and heat it at 180°C for 8 hours. Cool to obtain dark brown carbon spheres, which were collected by centrifugation, washed with deionized water and ethanol several times, and dried overnight at 60°C. Black carbon spheres with a particle diameter of 10 μm were obtained.
[0037] 2) Preparation of carbon-based / magnesium aluminum hydroxide precursor solution
[0038] Weigh 300mg of carbon spheres, dissolve them in deionized water and sonicate for 30min. At the same time, weigh 512.80mg of magnesium nitrate hexahydrate, 375.13mg of aluminum nitrate nonahydrate, and 144.213mg of hexamethylenetetramine into the above solution and sonicate for 30min to obtain a uniform and stable aqueous solution.
[0039] 3) Preparation of carbon-based / magnesium aluminum hydroxide
[0040] Transfer the precursor solution prepared in 2) to ...
Embodiment 2
[0046] 1) Preparation of carbon spheres
[0047] Prepare a 1mol / L glucose solution, transfer it to a reaction kettle lined with tetrafluoroethylene and heat it at 180°C for 8 hours. Cool to obtain dark brown carbon spheres Ps, which were collected by centrifugation, washed with deionized water and ethanol several times, and dried overnight at 60°C. Such as figure 1 , we can see uniform carbon spheres with a particle size of about 8 μm.
[0048] 2) Preparation of carbon-based / magnesium aluminum hydroxide precursor solution
[0049]Weigh 300mg of carbon spheres, dissolve them in deionized water and sonicate for 30min. At the same time, weigh 512.80mg of magnesium nitrate hexahydrate, 375.13mg of aluminum nitrate nonahydrate, and 144.213mg of hexamethylenetetramine into the above solution and sonicate for 30min to obtain a uniform and stable precursor solution.
[0050] 3) Preparation of carbon-based / magnesium aluminum hydroxide
[0051] The precursor solution prepared in 2)...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Diameter | aaaaa | aaaaa |
| Concentration | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More