Preparation and Properties of Ag/AgCl Porous Electrode for Marine Environment

The effects of electrode preparation process on precursor powder morphology and the properties of Ag/AgCl porous electrode were studied by changing the drying method of precursor powder and sintering temperature. The process parameters of electrode preparation were optimized.The results show that the AgCl powders prepared by spray drying were fine. The stability of the electrode sintered at 465℃ was excellent. The potential drift between the optimal electrode couple was 20.5 μV within 140 h, and was less than 10 μV within 24 h after stablization. The potential drift of three prepared couples of electrodes was less than 20 μV within 24 h after stablization, showing good repeatability of preparation process. The electrode had a good long-term stability, whose potential drift within 24 h after stablization changed little after being immersed in artificial seawater for 10 months.