Acid resistant anode, and preparation method

Abstract

This invention relates to a method for preparing acid-resistant anode. The acid-resistant anode is composed of Ti as the matrix, SnO2 + Sb2O4 + graphite fibers as the intermediate buffer layer, and PbO2 or MnO2 as the active layer. The method adds highly conductive and acid-resistant graphite fibers into the intermediate buffer layer, thus the adhesiveness between the active layer and the intermediate buffer layer is improved, and the anode has high conductivity and service life in strong acid solution. The acid-resistant anode has such advantages as high acid resistance, long service life, high catalytic activity and wide applications.

Description

1. Technical field

[0001] The invention relates to an acid-resistant anode and a preparation method thereof, which belong to the technical field of electrochemical engineering, and specifically relate to an electrode catalyst used in an electrolysis process and a preparation method thereof. 2. Background technology

[0002] Because sulfuric acid solution has the advantages of high conductivity, stable properties and low price. Therefore, many electrochemical synthesis and other systems need to be carried out in sulfuric acid solution, such as non-ferrous metal smelting, chlor-alkali industry, organic electrosynthesis, etc. However, due to the strong corrosiveness of sulfuric acid solution and the strong oxidizing property of the nascent oxygen released from the anode, there is a shortage of anode materials suitable for industrial production. An ideal anode should have the characteristics of good electrical conductivity, high catalytic activity, long life, large surface area...