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Method for preparing high-efficacy super capacitor material by heavy metal related biomass

A supercapacitor and supercapacitor technology, applied in the field of environmental management and resource utilization, to achieve the effects of good capacitance characteristics, excellent stability and low cost

Inactive Publication Date: 2019-06-28
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Method for preparing high-efficacy super capacitor material by heavy metal related biomass
  • Method for preparing high-efficacy super capacitor material by heavy metal related biomass
  • Method for preparing high-efficacy super capacitor material by heavy metal related biomass

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The corn stalk leaves collected in the Dabaoshan mining area are subjected to pretreatment steps such as washing with water, drying, crushing, and drying, and then sealed and stored in containers for later use.

[0029] Take 1 g of the above-mentioned corn stalk leaf powder, dissolve it in 20 mL of ammonia water and stir for 12 h to obtain A solution; at the same time, take 1 g of P 123 Put it into 20 mL of absolute ethanol and stir for 12 h to dissolve completely to obtain solution B; mix solution A and solution B and stir for 6 h. Then 1 g of urea was added to the above mixture and stirred for 2 h. Add 0.4 g KOH to the above mixture and stir for 12 h. After the stirring was completed, the above mixture was dried in a water bath (80 °C) (about 2-3 h). Then the above mixture was put into a tube furnace (argon, the heating rate was 2 °C / min, 120 °C / 3 h, 450 °C / 3 h, 700 °C / 3 h). Finally the samples were washed with hydrochloric acid and water until the pH was neutral. ...

Embodiment 2

[0033] The Miscanthus leaves collected in the Dabaoshan mining area are washed with water, dried, crushed, dried and other pretreatment steps, and then sealed and stored in containers for later use.

[0034] Take 1 g of Miscanthus leaf powder mentioned above, dissolve it in 20 mL of ammonia water and stir for 12 h to obtain solution A; at the same time, take 2 g of P123 and put it into 20 mL of absolute ethanol and stir for 12 h to obtain solution B; The solution was mixed and stirred for 6 h. Then 2 g of urea was added to the above mixture and stirred for 2 h. Add 0.4 g KOH to the above mixture and stir for 12 h. After the stirring was completed, the above mixture was dried in a water bath (80 °C) (about 2-3 h). Then the above mixture was put into a tube furnace (argon, the heating rate was 2 °C / min, 120 °C / 3 h, 450 °C / 3 h, 700 °C / 3 h). Finally the samples were washed with hydrochloric acid and water until the pH was neutral. After drying at 80°C for 5 h, take it out, gri...

Embodiment 3

[0038] The masson pine leaves collected from the farmland next to the mining area are washed with water, dried, crushed, dried and other pretreatment steps, and then sealed and stored in containers for later use.

[0039] Take 1 g of the above-mentioned pine leaf powder and dissolve it in 20 mL of ammonia water and stir for 12 h to obtain solution A; meanwhile, take 2 g of P123 and put it into 20 mL of absolute ethanol and stir for 12 h to obtain solution B; Solution B was mixed and stirred for 6 h. Then 1 g of urea was added to the above mixture and stirred for 2 h. Add 0.4 g KOH to the above mixture and stir for 12 h. After the stirring was completed, the above mixture was dried in a water bath (80 °C) (about 2-3 h). Then the above mixture was put into a tube furnace (argon, the heating rate was 2 °C / min, 120 °C / 3 h, 450 °C / 3 h, 700 °C / 3 h). Finally the samples were washed with hydrochloric acid and water until the pH was neutral. After drying at 80°C for 5 h, take it ou...

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Abstract

The invention discloses a method for preparing a high-efficacy super capacitor material by a heavy metal related biomass, and aims at searching for a proper resource for heavy metal related plant bodies at present. Plant bodies rich in heavy metal in a general mine are sampled (in a five-point sampling method), the collected plant bodies (including the roots, stems and leaves) are preprocessed bycleaning, drying crushing and drying, and a preparation method for obtaining the high-efficiency porous carbon material by dissolving, activating, and pyrolyzing the dried plant leaf powder is provided. The heavy metal transferred by plants can be fixed, and the material can serve as an electrode material of a super capacitor to store energy. The difficulty in secondary loss of the transferred heavy metal is overcome, the new capacitor material is provided for energy storage, solid waste biomass resources are utilized, and the problem in heavy metal related plant resources is solved effectively.

Description

technical field [0001] The invention relates to a method for preparing high-efficiency supercapacitor materials by utilizing heavy metal-related biomass, and belongs to the technical field of environmental management and resource utilization. Background technique [0002] Most industrial countries in the world are facing serious heavy metal pollution problems, so it is urgent to develop effective phytoremediation methods to remove excess heavy metals in the environment. China is a big mining country of mineral resources, and the pollution in mining areas is naturally serious. The inconspicuous plants that people usually see can grow in soil polluted by heavy metals, especially in heavily polluted mineral soils, acting as super scavengers. When environmental adversity comes, only through the maintenance of biodiversity can we ensure the endless life of creatures and the sustainable development of the earth. [0003] At present, the existing environmental pollution soil remed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/32H01G11/34H01G11/86C01B32/324
CPCY02E60/13
Inventor 严凯张曼陈作仇荣亮
Owner SUN YAT SEN UNIV
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