Titanium-based anode and preparation method and application thereof
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An anode and titanium-based technology, applied in the field of electrochemistry, can solve the problems of poor acid resistance, low life, high oxygen evolution potential, etc., and achieve the effect of saving power consumption and energy consumption
Pending Publication Date: 2022-06-07
GUANGZHOU HONWAY TECH CORP +1
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Problems solved by technology
[0004] In order to solve the above problems, the researchers proposed to replace the above-mentioned Pb-based alloy anodes with titanium-based anodes. Although titanium-based anodes are cheaper than traditional Pb-based alloy anodes, they still have low service life, low loadable current intensity, high oxygen evolution potential and acid resistance. Degree difference etc.
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Embodiment 1
[0090] In this example, a titanium-based anode is prepared, and the specific process is as follows:
[0091] D1. Material preparation:
[0092] D1a. Preparation of titanium substrate: the sandblasted titanium plate (TA1 and TA2 have similar results, and TA1 is used in this example), after degreasing and oxalic acid etching treatment, a uniform rough surface is obtained, and titanium is obtained after cleaning and drying. matrix;
[0093] D1b. Preparation of coating solution:
[0094] According to the ratio of metal molar ratio Ir:Ta:Zr=68:30:2, first dissolve zirconium chloride in a mixed solvent of n-butanol and isopropanol (volume ratio 1:1), add a little hydrochloric acid to prevent hydrolysis, hydrochloric acid The mass of (12mol / L) accounts for 0.5% of the mass percentage of the mixed solvent; after shaking, ultrasonication for 20min makes it fully dissolved or dispersed; then add chloroiridic acid and tantalum chloride to it in proportion to prepare total metal ions A...
Embodiment 2
[0099] A titanium-based anode is prepared in this example, and the specific difference from Example 1 is:
[0100] In step D1b, the metal molar ratio is Ir:Ta:Sb=65:32:3, that is, no zirconium chloride is added, but a corresponding proportion of antimony chloride (the salt corresponding to Sb) is added.
Embodiment 3
[0102] A titanium-based anode is prepared in this example, and the specific difference from Example 1 is:
[0103] In step D1b, the metal molar ratio is Ir:Ta:Sb=65:30:5, that is, no zirconium chloride is added, but a corresponding proportion of antimony chloride (the salt corresponding to Sb) is added.
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Abstract
The invention relates to a titanium-based anode and a preparation method and application thereof. The titanium-based anode comprises a titanium substrate and an oxide coating arranged on the surface of the titanium substrate, the oxide coating is a metal ion doped iridium tantalum oxide coating; the metal ions comprise at least one of zirconium ions and antimony ions; and in the iridium tantalum oxide coating, the ratio of the sum of iridium and tantalum to the metal ions is (13-120): 1 according to mole parts. According to the titanium-based anode, through the special oxide coating design, the service life of the titanium-based anode can be remarkably prolonged, the oxygen evolution potential of the titanium-based anode is reduced, and the loadable current intensity and the acid resistance of the titanium-based anode are improved. The invention further provides a preparation method and application of the titanium-based anode.
Description
technical field [0001] The invention belongs to the technical field of electrochemistry, and particularly relates to a titanium-based anode and a preparation method and application thereof. Background technique [0002] In the fields of electrocatalysis such as electroplating and electrolysis, electrodes (including anodes and cathodes) are required. In the field of electrolytic copper foil, continuous galvanizing, tin and other manufacturing fields, the concentration of sulfuric acid in the electrolyte is as high as 80-160g / L, and the anode current density reaches 5000-12000A / m 2 , the above harsh electrolysis conditions put forward higher requirements for the anode. [0003] In traditional technology, Pb (lead) alloy anodes are mostly used, such as Pb-Ag (lead-silver), Pb-Sn (lead-tin), etc. Such anodes are bulky, expensive, short in service life and low in load current. , As the use progresses, the high acidity electrolyte will dissolve the anode, resulting in a large ch...
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Application Information
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