Preparation of Sintered Titanium Anode and Its Electrochemical Properties

Jiangming LU;Bangna ZHOU;Zhongxing YU;Shiguan CHEN+, Shanghai University of Technology, Shanghai 200072, China

摘 要：<正> In this paper, the sintered Ti anodes （STA） with Ti suboxide intermediate layers and β-MnO₂ activelayers were investigated in detail. At usual industrial current densities, the oxygen evolutionoverpotential on STA is reduced by 350 mV compared with lead anodes. According to the equationobtained experimentally, the service life of STA may be expected to be more than 3 years. After los-ing activity, STA may be recoated with β-MnO₂ active layers and used again. The electrocatalyticactivity and the service life of the reused anodes remained almost unchanged. The possible reasonsfor losing activity of STA during the anodic evolution of oxygen were investigated by means of elec-tron probe microanalysis, electron scanning microscope and X-ray diffraction.

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