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A supercapacitor and electrode technology, applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of environmental pollution, animal diseases, high-cost garbage disposal, etc., and achieve high specific surface area and broad application prospects. , The effect of good cycle charge and discharge performance
Inactive Publication Date: 2016-01-13
王彦博
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Problems solved by technology
Through investigation, there are currently three main ways to deal with expired starchy fermented food: one is to throw away directly as garbage, which may pollute the environment; It is relatively high and there is a problem of garbage disposal after burning; the third is that the manufacturer crushes it and sells it to the farm at a lower price as feed, but the germs attached to the expired food may cause the disease of the farmed animals
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Embodiment 1
[0053] Example 1, as figure 1 As shown, the method for preparing a supercapacitor according to the first embodiment of the present invention includes:
[0054] Step 1, using expired starchy fermented food to prepare activated carbon, specifically including:
[0055] Step 101, carbonization treatment:
[0056]Place 200 g of expired steamed buns in a tube furnace, set a carbonization temperature of 500 degrees, keep the temperature for 1 hour, and carry out high-temperature carbonization to obtain carbon materials;
[0057] Step 102, grinding into toner powder:
[0058] Grinding the carbonized carbon material into carbon powder;
[0059] Step 103, adding alkaline activator:
[0060] Mix the alkaline activator KOH and carbon powder uniformly according to the mass ratio of 0.5:1, and add 30ml of distilled water to fully dissolve the alkaline activator KOH and stir evenly, and mark the obtained sample as CK21;
[0061] Step 104, high temperature drying and activation:
[0062...
Embodiment 2
[0072] In Example 2, the preparation method of the supercapacitor is different from that in Example 1 in that the mass ratio of the alkaline activator KOH to the carbon powder in step 103 is 1:1, and the obtained sample is marked as CK11. The structure of the prepared supercapacitor is the same as that of Example 1, the difference is that the electrode material of the material electrode plate 3 is prepared from the sample CK11.
Embodiment 3
[0073] In Example 3, the preparation method of the supercapacitor is different from that in Example 1 in that the mass ratio of the alkaline activator KOH to the carbon powder in step 103 is 2:1, and the obtained sample is marked as CK12. The structure of the prepared supercapacitor is the same as that of Example 1, the difference is that the electrode material of the material electrode plate 3 is prepared from the sample CK12.
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Abstract
The invention discloses a preparation method of a super capacitor. The preparation method comprises the following steps: 1) preparing activated carbon by utilizing overdue starch fermented food, wherein the step 1) comprises the step 101) carrying out carbonization treatment, the step 102) carrying out grinding to obtain carbon powders, the step103) adding alkaline activators, the step 104) carrying out high-temperature drying and activation, the step 105) carrying out acid washing and water washing to remove the alkali in the carbon powders, and the step 106) carrying out drying; 2) preparing active substance electrode sheets of the super capacitor by utilizing the prepared activated carbon; and 3) constructing the super capacitor. The beneficial effects are that the overdue starch fermented food is utilized to prepare the activated carbon material which has high specific surface area and high adsorption performance, and the material is utilized as the electrode sheets to construct the super capacitor; the prepared super capacitor is quick in charging/discharging speed, large in capacitance and good in circulation charging/discharging performance; the preparation method provides an environmentally-friendly and economical processing method for the overdue starch fermented food; and the method and the prepared super capacitor have significant practical value and a wide application prospect.
Description
technical field [0001] The invention relates to the technical field of supercapacitors, in particular, to an electrode pole piece and a supercapacitor prepared from expired starch fermented food. Background technique [0002] At present, energy and environmental problems are becoming more and more prominent, and human beings attach great importance to the research of energy storage technology and resource recycling technology. As a new type of energy storage device, supercapacitors have a series of advantages such as high power density, fast charging and discharging speed, long cycle life, wide operating temperature range, safety and pollution-free, etc. It has broad application prospects and is currently a research hotspot in the field of international energy storage. Electrode material is one of the key factors affecting the main performance of supercapacitors. Materials used for supercapacitors mainly fall into three categories: porous carbon materials, metal oxides and...
Claims
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Application Information
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