Preparation method of low-rank coal-based porous carbon and application of low-rank coal-based porous carbon in supercapacitor
A low-rank coal and porous carbon technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, can solve the problems affecting the application range of supercapacitors, complicated processes, and high preparation costs, and can promote the application range and preparation method. Simple and low cost of raw materials
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0025] Example 1
[0026] The low-cost low-rank coal-based porous carbon preparation method of this embodiment is carried out in the following steps:
[0027] 1. Raw material refinement
[0028] Crushing, grinding, sieving and drying the Zhundongci bituminous coal powder in sequence to obtain 80-100 mesh fine coal powder;
[0029] 2. Mixture preparation
[0030] Use liquid phase impregnation to mix refined coal powder with potassium carbonate to obtain a mixture;
[0031] The liquid phase impregnation process is as follows: dissolve potassium carbonate in water to obtain a potassium carbonate solution, mix 3 g of refined coal powder and potassium carbonate solution and place them in a mixer to stir evenly, and obtain the mixture after drying; the drying temperature is 80°C; the speed of the mixer is 300r / min;
[0032] The mass ratio of the refined coal powder to potassium carbonate is 1:3;
[0033] Three, high temperature activation
[0034] Place the mixture in step 2 in an atmosphere fur...
Example Embodiment
[0043] Example 2:
[0044] The low-rank coal-based porous carbon obtained in Example 1 is used to prepare a supercapacitor. Specifically,
[0045] Electrode preparation: In absolute ethanol, the selected coal-based porous carbon, conductive carbon black (Super P) and 60wt.% polytetrafluoroethylene emulsion (PTFE) are ground into a uniform film according to a mass ratio of 8:1:1. , Dry it in a vacuum drying oven (drying temperature is 120℃, drying time is 12h) for later use. Take 2mg of film each time for the preparation of single-piece pole piece, the area is about 1cm 2 .
[0046] Symmetrical supercapacitor assembly process: select two pole pieces of the same quality, press them on the sheared foam nickel collector with a diameter of 1.2cm, and dry them in a vacuum drying oven (heat preservation at 120℃ for 12h) as the positive and negative electrodes . Choose 1mol / LTEA BF4-PC as the electrolyte to assemble organic capacitors, cut a 1.6cm diameter glass fiber membrane (model: Wha...
PUM
Property | Measurement | Unit |
---|---|---|
Specific surface area | aaaaa | aaaaa |
Pore volume | 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