A kind of activated carbon with graded pores and preparation method thereof

Abstract

The invention relates to an activated carbon comprising a hierarchical hole channel structure and a production method thereof and belongs to the novel carbon material production field. The production method is based on the activation of the mechanical force auxiliary potassium carbonate on heavy carbon sources such as petroleum coke, coal, or phenolic resin. The production method comprises the specific steps of mixing the screened heavy carbon source powder with the potassium carbonate and obtaining the activated carbon for a super capacitor through the ball-milling, activation, washing and drying process. According to the activated carbon comprising the hierarchical hole channel structure and the production method thereof, the activated carbon is large in specific surface area, is of a hierarchical hole channel structure, and the like; the technical route that the potassium carbonate serves as a pore forming agent to produce the activated carbon is implemented and the problem that raw materials such as the petroleum coke and the coal cannot be activated by the potassium carbonate is solved; compared with potassium hydroxide and other activation methods, the corrosion is low, the adaptability to the raw materials is high, the specific surface area is large, the mesoporous pore capacity is large, the enlargement is easy, and the like; the novel activated carbon can be widely applied to the adsorption, catalysis, electrochemical energy storage and other fields and accordingly the application prospect is wide.

Description

technical field [0001] The invention relates to an activated carbon and a preparation method thereof, in particular to an activated carbon with hierarchical pores and a preparation method thereof. Background technique [0002] With the widespread popularity of portable electronic devices, the increasing importance of electric vehicles, and the depletion of non-renewable fossil energy, especially from the perspective of power, people urgently need a green and high-quality energy storage device. At present, in terms of energy storage, lithium-ion batteries and super capacitors are two relatively advanced energy storage technologies. Due to the advantages of high density, fast charging rate and long cycle life, it is widely used in electric vehicles and mobile electronic devices. However, the core component that restricts the development of supercapacitors is the high price of carbon electrode materials. At this stage, commercial supercapacitor carbon electrode materials—acti...

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Problems solved by technology

[0003] In order to improve the added value of heavy carbon sources such as petroleum coke, coal and other raw materials, and solve the problems of high activation cost of potassium hydroxide and strong corrosion in the process of industrial scale-up, the present invention provides a kind of heavy carbon source as raw material, potassium carbonate As a pore-forming agent, a method of preparing activated carbon with hierarchical pores is featured by this method, which is environmentally friendly. At the same time, the carbon electrode material prepared by using the prepared activated carbon has the characteristics of high capacity and good power performance.

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