A preparation method and application of a linear flexible all-carbon supercapacitor electrode
A supercapacitor and flexible technology, applied in the field of preparation of linear flexible all-carbon supercapacitor electrodes, can solve the problems of high performance and complicated synthesis process, and achieve low cost, simple preparation process, high energy density and power density. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0038] A 10 cm carbon fiber was immersed in a mixture of concentrated sulfuric acid (30 mL) and nitric acid (10 mL), ultrasonicated for 2 hours, and then heated at 120° C. for 10 minutes. The carbon fiber was removed from the solution by cooling, washed with a large amount of pure water, and finally dried under vacuum at 60°C for 6 hours to obtain a carbon fiber porous carbon fiber, that is, a linear flexible all-carbon supercapacitor electrode.
[0039] The macroscopic morphology of carbon fibers before and after acid oxidation treatment was compared by scanning electron microscope. figure 1 with figure 2 , it can be seen that after the acid oxidation treatment, the carbon fiber softens and becomes flexible. The microscopic morphology of carbon fiber porous carbon fiber obtained by scanning electron microscope is as follows image 3 with Figure 4 , which intuitively illustrates the core-shell structure of carbon fiber, the shell thickness is 1.5 microns, and the core dia...
Embodiment 2
[0042] A 10 cm carbon fiber was immersed in a mixture of concentrated sulfuric acid (30 mL) and nitric acid (10 mL). The solution was sonicated for 2 hours and then heated at 120 °C for 10 minutes. The fiber is removed from the solution, washed with a large amount of pure water, then immersed in a 1M sodium borohydride solution to reduce the carbon fiber porous carbon fiber prepared in Example 1, and finally dried at 60° C. for 6 hours to obtain the reduced carbon fiber porous carbon. Composite supercapacitor electrodes. At a scan rate of 10 mV / s, the specific capacitance of the reduced carbon fiber increased to 242 F / g, which was significantly higher than that of the unreduced carbon fiber, as Figure 11 (B in the figure is the carbon fiber porous carbon fiber prepared by Example 1, and C is the composite supercapacitor electrode of the reduced carbon fiber porous carbon prepared by this embodiment), it can be seen that sodium borohydride reduction treatment is beneficial to...
Embodiment 3
[0045] A 2 cm carbon fiber was immersed in a mixture of concentrated sulfuric acid (30 mL) and nitric acid (10 mL), sonicated for 3 hours, and then heated at 120° C. for 10 minutes. The carbon fiber was removed from the solution by cooling, washed with a large amount of pure water, and finally dried under vacuum at 60°C for 24 hours to obtain a carbon fiber porous carbon fiber, that is, a linear flexible all-carbon supercapacitor electrode.
[0046] The morphology and performance characterization results of the linear flexible all-carbon supercapacitor electrode prepared in this example are similar to those in Example 1, and will not be repeated here.
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More