Method for preparing super active carbon based on hickory with coal being adulterated

Abstract

This invention relates to a method for preparing coal-doped Carya cathayensis shell-based super activated carbon. The method solves the problem of low specific volumetric capacity of activated carbon prepared by using one raw material as the carbon precursor. The method also addresses the problem that coconut shell or walnut shell and solid KOH are difficult to be activated in microwave oven. Besides, KOH has a high cost, and activation at 800 deg.C may generate K vapor. The method comprises: pulverizing carbonized coal and Carya cathayensis shell in fine pulverizers, mixing uniformly according to a certain ratio, mixing the mixture with NaOH and ethanol uniformly, heating the mixture in an activation furnace, activating, cooling, washing with HCl, rinsing with tap water, filtering and drying to obtain coal-doped Carya cathayensis shell-based super activated carbon.

Description

technical field

[0001] The invention relates to an activated carbon, in particular to a method for preparing coal-doped hickory shell-based super activated carbon. Background technique

[0002] At present, research on supercapacitors mainly focuses on carbon electrode materials, electrolytes, and structural design. Among them, carbon electrode materials are considered to be the key to improving capacitance performance, which determines the energy density, power density, and cycle performance of supercapacitors. Currently, carbon materials used as supercapacitor electrodes include super activated carbon, activated carbon fiber cloth, carbon aerogel, carbon nanotubes, etc. Supercapacitors using carbon aerogels and carbon nanotubes as electrodes have excellent capacitive performance, but due to the complicated preparation process and high cost, it is difficult to carry out large-scale production. Activated carbon fiber cloth needs to go through many steps such as spinning, wea...