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Preparation method of pig manure activated carbon electrode material

A technology of electrode material and activated carbon, which is applied in the field of preparation of pig manure activated carbon electrode materials, to achieve the effects of increasing wettability, improving transmission speed and storage, and good charge and discharge performance

Active Publication Date: 2019-08-27
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no report on the use of pig manure activated carbon for the preparation of electrode materials

Method used

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  • Preparation method of pig manure activated carbon electrode material
  • Preparation method of pig manure activated carbon electrode material
  • Preparation method of pig manure activated carbon electrode material

Examples

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Embodiment 1

[0034] Embodiment 1: the preparation method of pig manure activated carbon electrode material is carried out according to the following steps in the present embodiment:

[0035] Step 1. Pretreatment: Add a hydrochloric acid solution with a concentration of 1mol / L to the dried pig manure, soak for 1.5 hours at room temperature, then wash with deionized water until neutral, and dry at 100°C to constant weight;

[0036] Step 2, then put it in a pyrolysis furnace, perform high temperature pyrolysis for 0.5h in a nitrogen atmosphere at 500°C, and cool down to room temperature with the furnace to obtain pyrolytic carbon, which is marked as PMB;

[0037] Step 3: Add 100ml of water to 10g of pyrolytic charcoal and a ratio of 4:1 to the pyrolytic charcoal obtained in step 2. Add KOH solution to the pyrolytic charcoal obtained in step 2, mix well, soak for 24 hours, and dry at 100°C to constant weight ;

[0038] Step 4, then under the protection of nitrogen, activate at 800°C for 1.5h ...

Embodiment 2

[0042]Embodiment 2: different from embodiment 1: the soaking treatment time is 2.0h in step one. Other steps and parameters are the same as in Example 1.

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Abstract

The invention discloses a preparation method of a pig manure activated carbon electrode material, and belongs to the technical field of supercapacitor electrode materials. According to the preparationmethod, the diversified utilization of the pig manure is realized. The method comprises the following steps of 1, dipping dry pig manure with a hydrochloric acid solution, washing with deionized water until the dry pig manure is neutral, and drying; 2, carrying out high-temperature pyrolysis and cooling under a nitrogen atmosphere; 3, dipping with a KOH solution, and drying; 4, carrying out high-temperature activation under the protection of nitrogen, and cooling to room temperature; and 5, neutralizing by using a hydrochloric acid solution, then washing to neutral by using deionized water, and drying to constant weight. The pig manure activated carbon electrode material contains MgO, ZnO and Al2O3, wherein the alkali carbon ratio is 4 to 1, the activation temperature is 800 DEG C, the activation time is 1.5h, and the specific surface area of the prepared electrode material is 920 m2g-1; and the energy density of the assembled symmetrical supercapacitor can reach 6.87Wh kg-1 at 0.5A g-1, and the capacitance retention rate reaches 100% at the high current density of 5A g-1 after 10,000 cycles.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor electrode materials; be specifically related to the preparation method of pig manure activated carbon electrode material, the pig manure activated carbon electrode material of the present invention contains MgO, ZnO, Al 2 o 3 . Background technique [0002] The development of the breeding industry has led to a huge and increasing output of pig manure. Pig manure often contains heavy metal elements. If it is directly composted and returned to the field, it will cause environmental pollution. If it is not treated in time, it will restrict the development of the rural economy and even affect the health of the surrounding people. Although livestock and poultry manure with high ash content and low calorific value is a low-quality biomass raw material, its annual output is as high as 2.6 billion tons, equivalent to 112 million tons of standard coal. Therefore, an efficient utilization method sh...

Claims

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Application Information

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IPC IPC(8): H01G11/26H01G11/32H01G11/86
CPCH01G11/26H01G11/32H01G11/86Y02E60/13
Inventor 秦丽元张世慧侯志伟武杨邵野王泽昊
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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