Preparing method of porous carbon electrode of super capacitor with high magnified charge-discharge performance

Abstract

The invention discloses a method for preparing a porous carbon electrode of a super capacitor with high-rate charge-discharge performance. The method comprises the following steps that: a microporous zeolite molecular sieve is taken as a template, gaseous acetylene, methane or ethylene is taken as a carbon source, and a radiofrequency heating device is used to carry out vapor deposition to obtain porous carbon rich in micropores in a quartz tube reactor; the porous carbon undergoes high-temperature heat treatment at the temperature of between 1000 and 1600 DEG C to adjust surface nature to produce porous carbon with large specific surface area; and the porous carbon with large specific surface area and polyfluortetraethylene are mixedly dispersed into alcohol, prepared into paste, and evenly coated on a foamed nickel sheet, and the foamed nickel sheet is dried and pressed to prepare the porous carbon electrode. The method has the advantages that: the prepared carbon with large specific surface area has a homogeneous pore structure; the porous carbon has low surface hydrophilicity and low oxygen content, so the prepared porous carbon electrode is particularly suitable for the super capacitor with the high-rate charge-discharge performance.

Description

Technical field

[0001] The invention relates to a method for preparing porous carbon electrodes of supercapacitors with high-rate charge and discharge performance, and belongs to the preparation and modification technology of supercapacitor carbon electrodes. Background technique

[0002] Supercapacitor is a new type of energy storage device developed at the end of the 20th century with performance between traditional capacitors and batteries. It has high power density, long cycle life, instantaneous large current and rapid charge and discharge, wide operating temperature range, safety and no The characteristics of pollution, etc., have broad application prospects in the fields of electric vehicles, memory, microcomputers, and aerospace.

[0003] Porous carbon material is the core material of carbon-based supercapacitors. Its energy storage mechanism is that the charge is stored in the electric double layer formed between the electrode and the electrolyte interface, and it relies...

Images