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本专利提出了不用任何贵金属涂层,在隔膜电解槽中降低钢阴极上氢过电压的处理方法。专利中叙述了钢阴极具体的处理条件和降低氢过电压值:(1)在pH=8到50％NaOH重量的碱性范围内,在电极存在的条件下,将钢阴极浸入碱性的电解质中:(2)在阳极电流密度为0.015～0.1千安/米~2,温度为0～75℃之间,处理周期为0.5～1小时进行钢阴极去极化处理。
This patent proposes a method of reducing hydrogen overvoltage on the steel cathode in a diaphragm cell without any precious metal coating. The patent describes specific processing conditions and hydrogen over-voltage reduction values for the steel cathode: (1) immersion of the steel cathode into the alkaline electrolyte in the presence of the electrode in the alkaline range of pH = 8 to 50% NaOH weight (2) A cathodic depolarization of the steel cathode was carried out at an anode current density of 0.015-0.1 kA / m 2 at a temperature of 0-75 ° C and a treatment period of 0.5-1 hr.