Supercapacitor composite electrode material containing carbon micro-tubes and preparation method thereof

Abstract

The invention discloses a supercapacitor composite electrode material containing carbon micro-tubes and a preparation method thereof, which is characterized in that the supercapacitor composite electrode material is prepared from the following raw materials in parts by weight: 10 to 20 of poplar catkin, 5 to 10 of P123, 80 to 150 of hydrochloric acid, 20 to 30 of tetraethyl orthosilicate, 5 to 10 of sugar bran, 2 to 3 of sulfuric acid, an appropriate amount of HF, 10 to 15 of ZnCl2 solution, 20 to 40 of ethanol, 2 to 5 of silane coupling agent KH560, 3 to 8 of pyrrole, 15 to 20 of p-toluene sulfonic acid, 15 to 20 of ammonium persulfate solution and 80 to 300 of water; after the mesoporous carbon is activated with ZnCl2, the pore size of the mesoporous carbon increases, the number of mesopores increases, and with the function of the silane coupling agent, the adhesion of a conductive polymer on the mesoporous carbon is facilitated, so that the composite material shows better electrochemical performance; and the larger diameter of the carbon micro-tubes is suitable for ion transport and electrochemical energy storage is facilitated.

Description

technical field [0001] The invention relates to an electrode material for a supercapacitor, in particular to a composite electrode material for a supercapacitor containing carbon microtubes and a preparation method thereof. Background technique [0002] In recent years, mesoporous carbon materials have been widely used as electrode materials for supercapacitors and batteries due to their regular pore structure, large pore volume, and good electrical conductivity. As a new type of energy storage element, a supercapacitor mainly utilizes the energy stored in the electric double layer at the electrode / electrolyte interface. Whether the electric double layer can be formed quickly and uniformly at the two-phase interface is an important factor to measure the quality of the capacitor. For mesoporous carbon with regular and orderly arrangement of pores, electrolyte ions can migrate freely in the pores, can quickly form an electric double layer, weaken the capacitance dispersion eff...

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Problems solved by technology

[0003] Zhang Jing prepared a composite electrode material using pyrrole and mesoporous carbon in his doctoral dissertation "Preparation and Performance Research of High-Capacity Supercapacitor Composite Electrode Materials Based on Mesoporous Carbon Carriers", but the activation of mesoporous carbon Poor performance, and its integration with conductive polymers needs to be improved