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Method for preparing activated carbon materials

A kind of activated carbon and a technology for preparing activated carbon, applied in the manufacture of hybrid/electric double-layer capacitors, etc., can solve unsatisfactory problems and achieve the effects of reliable principle, broad development prospects, and good economic benefits

Inactive Publication Date: 2016-10-12
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing research results are not satisfactory. In order to further improve the performance of capacitors and accelerate the pace of its application, it is still the goal pursued by researchers to develop new activated carbon electrode materials that integrate various excellent properties and have practical value.

Method used

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  • Method for preparing activated carbon materials
  • Method for preparing activated carbon materials
  • Method for preparing activated carbon materials

Examples

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Embodiment 1

[0018] The preparation process of the activated carbon material involved in this example is as follows: first wash the ordinary walnut shells with double distilled water to remove impurities, dry them at 80°C for 24 hours, and then screen them with a mesh screen with an aperture of 40, and then divide them into 5 parts, each taking 2g, respectively called A1, A2, A3, A4 and A5, put A1 directly into a tubular resistance furnace for carbonization under a nitrogen atmosphere, and then soak it in an aqueous hydrochloric acid solution with a concentration of 5% by mass After 12 hours, wash with double distilled water until neutral and dry, and the obtained activated carbon material is named WSAC-D; soak A2 in 1mol / L sodium hydroxide aqueous solution at 80°C and stir for 24 hours, After washing until neutral, dry it, then put it into a tube-type resistance furnace for carbonization under nitrogen atmosphere, then soak it with 5% hydrochloric acid aqueous solution for 12 hours, wash i...

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Abstract

The invention belongs to the field of preparation of activated carbon materials, and relates to a preparation method of activated carbon materials. After the walnut shells are crushed, washed and dried to remove impurities, 5 parts are taken, namely A1, A2, A3, A4 and A5, and A1 is carbonized and soaked in aqueous hydrochloric acid solution. , washed to neutral and dried, named WSAC‑D; soaked in sodium hydroxide aqueous solution, washed to neutral dry and carbonized, then soaked in hydrochloric acid aqueous solution, washed to neutral and dried, named WSAC‑Na ;A3, A4 and A5 were mixed with zinc chloride and carbonized at 700°C, 800°C and 900°C, then soaked in aqueous hydrochloric acid solution, washed to neutrality and dried, respectively named WSAC‑Zn‑7, WSAC‑Zn ‑8 and WSAC‑Zn‑9, the preparation process is simple, the principle is reliable, the cost is low, the application is wide, and the use environment is friendly.

Description

Technical field: [0001] The invention belongs to the technical field of preparation of activated carbon materials, and relates to a method for preparing activated carbon materials by using walnut shells as raw materials. The prepared activated carbon materials have good cycle stability, are applied to the field of supercapacitors, and have good development prospects and application values. Background technique: [0002] Supercapacitor is a new type of energy storage element, which has the advantages of fast charging, long cycle life, and no pollution to the environment. It is widely used in the field of backup power for various electronic products and auxiliary power for hybrid vehicles. Electrode materials play a key role in the performance of supercapacitors. At present, electrode materials mainly include porous carbon materials, metal oxides and conductive polymers. Among them, porous carbon materials are widely used in academic circles because of their good charge and dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08H01G11/86
CPCY02E60/13H01G11/86
Inventor 郭培志崔立君季倩倩赵修松
Owner QINGDAO UNIV
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