Preparation method for titanium base tin-doped lead dioxide electrode
A lead dioxide and electrode technology, which is applied in the field of preparation of titanium-based tin-doped lead dioxide electrodes, can solve the problems of high equipment requirements, cumbersome production process, and the oxygen evolution potential and electrocatalytic activity of lead dioxide electrodes need to be further improved. , to achieve the effect of low equipment requirements, improved catalytic activity, and easy control of operation
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Embodiment 1
[0025] Cut the titanium sheet into a size of 1.0cm×3.5cm, and polish it with 360-grit sandpaper to make the surface of the titanium substrate present a silver-white metallic luster, boil it in a sodium hydroxide solution with pH=10 for 30min to remove the surface oil, and then remove the surface oil at 95 wt.% A mixed solution of hydrochloric acid and 5 wt.% hydrofluoric acid was used for etching to remove the surface oxide layer, rinsed with distilled water and placed in distilled water for later use. The pretreated titanium substrate is used as the cathode, and the stainless steel of the same size is used as the anode, and the electrolyte is a mixture of 0.48 mol / L nickel sulfate, 0.15 mol / L sodium chloride, 0.50 mol / L boric acid and 0.50 mol / L sodium sulfate In the solution, the control current density is 1.0 A / dm 2 , cathodic deposition of nickel for 30 min. The nickel-plated titanium substrate was used as the cathode, and the lead-tin alloy electrode with a tin content o...
Embodiment 2
[0032] The pretreatment steps of the titanium sheet are the same as in Example 1. The pretreated titanium substrate is used as the cathode, and the stainless steel of the same size is used as the anode, and the electrolyte is a mixture of 0.35 mol / L nickel sulfate, 0.1 mol / L sodium chloride, 0.40 mol / L boric acid and 0.40 mol / L sodium sulfate In the solution, the control current density is 1.5 A / dm 2 , cathodic deposition of nickel for 35 min. The nickel-plated titanium substrate was used as the cathode, and the lead-tin alloy electrode with a tin content of 2.0 wt.% was used as the anode, and the current density was controlled at 4 A / dm 2 , lead and tin were co-deposited in the electrolyte of 0.36 mol / L lead fluoroborate, 0.006 mol / L tin fluoroborate, 1.2 mol / L fluoroboric acid and 0.5 g / L peptone, and the electrodeposition time was 2 h. The titanium substrate was taken out, rinsed with distilled water, and after natural air-drying, it was melted at 160°C for 1 min to obtai...
Embodiment 3
[0034] The pretreatment steps of the titanium sheet are the same as in Example 1. The pretreated titanium substrate is used as the cathode, and the stainless steel of the same size is used as the anode, and the electrolyte is a mixture of 0.55 mol / L nickel sulfate, 0.2 mol / L sodium chloride, 0.65 mol / L boric acid and 0.65 mol / L sodium sulfate In solution, control the current density to 0.5 A / dm 2 , cathodic deposition of nickel for 15 min. The nickel-plated titanium substrate was used as the cathode, and the lead-tin alloy electrode with a tin content of 5.0 wt.% was used as the anode, and the current density was controlled at 3 A / dm 2 , lead and tin were co-deposited in the electrolyte of 0.42 mol / L lead fluoroborate, 0.02 mol / L tin fluoroborate, 1.5 mol / L fluoroboric acid and 1.0 g / L peptone, and the electrodeposition time was 1.5 h. The titanium substrate was taken out, rinsed with distilled water, and after natural air-drying, it was melted at 200°C for 5 minutes to obtain...
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