A Study the Manufacturing Parameters and Developing of Insoluable Oxide Electrode for Electrolytic Water

The cooperation company has over ten-year experience in producing and selling clean drink-water machine. To produce electrolytic water, a pair of insoluble electrodes in a cell is required. According to applied potential, weak acidic water could be achieved in the site of anode and weak alkaline water in the site of cathode. This alkaline water could be used for drinking to improve human health. Nowadays, the electrode materials for electrolytic water are insoluble electrodes which were preliminarily analyzed to be IrO2+Ta2O5 and RuO2+Ta2O5electrodes. That is, the electrodes were made with a precursor containing Ir and Ta or Ru and Ta which were painted on a pure Ti substrate and then oxidized in an oven at high temperatures. The cooperation company has used the electrodes for a period and found some detrimental defects or even domination of oxides. The quality of electrodes is not stable during their life time. Therefore, it is an importance issue to develop a reliable electrode for applying in electrolytic water. To meet the requirement of Cooperation Company, this one-year project will try to fabricate a reliable oxide electrode for electrolytic water. The microstructures and electrochemical behavior of commercial oxide electrodes will be investigated. Activation of the pure Ti substrate is conducted and precursor containing Ir, Ru and Ta is painted on the substrate. The oxidation temperature range between 400oC and 600oC will be performed. Comparison of self-made electrodes and commercial electrodes will be done to ensure the performance of our developed electrodes. We use SEM/EDS to examine the surface morphologies and chemical compositions of oxides. The microstructures of oxides will be detected with TEM/EDS and XRD; meanwhile the bonding strength between oxide and Ti substrate was evaluated by the ASTM D3359-02 Standard Test Method for Measuring Adhesion by Tape Test, thermal cycle test, and wear resistance test. During the one-year project, we will discuss with the collaboration company every three months. We hope a reliable electrode could be developed after conductance of the one-year project and the developed electrode could be applied in industry.

Project ID:PB10012-0157
External Project ID:NSC100-2622-E182-003-CC2