Method for preparing composite electrode material of super capacitor
A supercapacitor and composite electrode technology, applied in capacitors, electrolytic capacitors, circuits, etc., can solve the problems of low rate and unsatisfactory cycle life, and achieve the effects of low equipment use requirements, good cycle stability and simple operation process.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0030] Example 1
[0031] (1) Preparation of graphite oxide
[0032] Add 1.5g graphite and 1.5g NaNO into a 500ml beaker 3 , 70ml of H 2 SO 4 (98%), ultrasonic for 15 minutes, then transfer to an ice bath, then slowly add 9g of KMnO to the reaction flask 4 , Magnetic stirring for 2 hours, the solution turns from black to brown, then add 100ml of deionized water, after magnetic stirring, add 200ml of water, the solution changes from brown to yellowish brown, then transfer to a water bath at 90°C Stir at a constant temperature for 1 hour, the solution turns yellow. When it is cooled to about 40°C, add 5ml of hydrogen peroxide (30%), and then centrifuge several times with deionized water and ethanol. The resulting sample is vacuum freeze-dried for 24 hours to obtain oxidation graphite.
[0033] (2) Preparation of Ni(OH) 2 / CoO / rGO composite electrode material
[0034] Take 12 mg of the prepared graphite oxide and disperse it with 24 ml of ethylene glycol ultrasonically, while dispersing...
Example Embodiment
[0041] Example 2
[0042] (1) Preparation of graphite oxide
[0043] Add 1.5g graphite and 1.5g NaNO into a 500ml beaker 3 , 70ml of H 2 SO 4 (98%), ultrasonic for 15 minutes, then transfer to an ice bath, and then slowly add 6g KMnO to the reaction flask 4 , Magnetically stirred for 1 hour, the solution changed from black to brown, then add 100ml of deionized water, after magnetic stirring, add 200ml of water, the solution changed from brown to yellow-brown, then transferred to the water bath at 80 °C Stir at a constant temperature for 2 hours, the solution turns yellow. When it is cooled to about 10°C, add 5ml of hydrogen peroxide (30%), then centrifuge several times with deionized water and ethanol, and freeze-dry the obtained sample for 24 hours in vacuum to obtain oxidation graphite.
[0044] (2) Preparation of Ni(OH) 2 / CoO / rGO composite electrode material
[0045] Take 12 mg of the prepared graphite oxide and ultrasonically disperse it with 24 ml of ethylene glycol, while disp...
Example Embodiment
[0048] Example 3
[0049] (1) Preparation of graphite oxide
[0050] Add 1.5g graphite and 1.5g NaNO into a 500ml beaker 3 , 70ml of H 2 SO 4 (98%), ultrasonic for 15 minutes, then transfer to an ice bath, then slowly add 18g KMnO to the reaction flask 4 , Magnetic stirring for 3 hours, the solution turns from black to brown, then add 100ml of deionized water, after magnetic stirring, add 200ml of water, the solution changes from brown to yellowish brown, then transfer to a water bath at 100°C Stir at a constant temperature for 0.5 hours, the solution turns yellow. When it is cooled to about 20°C, add 5ml of hydrogen peroxide (30%), and then centrifuge several times with deionized water and ethanol. The resulting sample is vacuum freeze-dried for 12 hours to obtain oxidation graphite.
[0051] (2) Preparation of Ni(OH) 2 / CoO / rGO composite electrode material
[0052] Take 12 mg of the prepared graphite oxide and ultrasonically disperse it with 24 ml of ethylene glycol. At the same ti...
PUM
Property | Measurement | Unit |
---|---|---|
Specific capacitance | aaaaa | aaaaa |
Specific capacitance | aaaaa | aaaaa |
Specific capacitance | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap