A kind of preparation method of titanium-based insoluble anode

A soluble anode and titanium-based technology, which is applied in the field of preparation of titanium-based insoluble anodes, can solve the problems of failure to achieve industrialization in the organic electrochemical synthesis process and lack of anode materials, and achieve improved anti-passivation performance, high electrocatalytic activity, The effect of high catalytic activity

Active Publication Date: 2017-06-30
YANGZHOU UNIV
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Problems solved by technology

[0006] Although organic electrochemical synthesis has incomparable advantages over chemical methods, many organic electrochemical synthesis processes have not yet been industrialized
One of the important reasons is the lack of anode materials with excellent performance

Method used

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  • A kind of preparation method of titanium-based insoluble anode

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Embodiment 1

[0041] A method for preparing a titanium-based insoluble anode, in particular, a method that uses metal titanium as the electrode matrix, uses lead paste of waste lead storage batteries as raw material, and uses NH 3 .H 2 O-(NH 4 ) SO 4 Leach PbSO 4 , PbSO obtained through separation and purification 4 As the raw material, the thermal decomposition of the polymeric precursor-electrochemical oxidation of lead sulfate coupling technology, PbSO 4 PbO was prepared by anodic oxidation 2 , to get PbO 2 Directly used as an electrocatalytic electrode material to obtain a titanium-based insoluble anode, the process is as follows figure 1 ,Specific steps are as follows:

[0042] (1) Surface treatment: mechanically grind the plate-shaped titanium metal substrate, degrease the surface in an aqueous hydroxide solution, etch in an oxalic acid solution, and wash with water to obtain a surface-treated titanium substrate, and the substrate material enters the next step;

[0043] (2) In...

Embodiment 2

[0049] A kind of preparation method of titanium-based insoluble anode, with PbSO 4 As the raw material, the thermal decomposition of the polymeric precursor-electrochemical oxidation of lead sulfate coupling technology, PbSO 4 PbO was prepared by anodic oxidation 2 , to get PbO 2 Directly used as an electrocatalytic electrode material to obtain a titanium-based insoluble anode, the steps are as follows:

[0050] (1) Surface treatment: mechanically grind the netted metal titanium substrate, degrease the surface in an aqueous solution of hydroxide and carbonate, etch in an oxalic acid solution, and wash with water to obtain a surface-treated titanium substrate. The base material enters the next step;

[0051] (2) Intermediate layer coating: the metal titanium substrate obtained in the previous step is used as the electrode substrate, and the precursor is made of SnCl 4 , SbCl 3 , PbCl 2 , citric acid and ethylene glycol, the molar ratio of citric acid to ethylene glycol is...

Embodiment 3

[0057] A kind of preparation method of titanium-based insoluble anode, with PbSO 4 As the raw material, the thermal decomposition of the polymeric precursor-electrochemical oxidation of lead sulfate coupling technology, PbSO 4 PbO was prepared by anodic oxidation 2 , to get PbO 2 Directly used as an electrocatalytic electrode material to obtain a titanium-based insoluble anode, characterized in that the method steps are as follows:

[0058] (1) Surface treatment: grinding the rod-shaped metal titanium substrate, degreasing the surface in an aqueous solution of hydroxide, carbonate and bicarbonate, etching in an oxalic acid solution, and washing with water to obtain a surface-treated titanium substrate, The matrix material enters the next step;

[0059] (2) Intermediate layer coating: the metal titanium substrate obtained in the previous step is used as the electrode substrate, and the precursor is made of SnCl 4 , SbCl 3 、LaCl 3 , citric acid and ethylene glycol, the mol...

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Abstract

The invention relates to a method for preparing a titanium-based insoluble anode, and belongs to the technical fields of preparation technology of electrode materials and resource utilization of waste lead storage batteries. In particular, a metal titanium as the electrode matrix, PbSO4 obtained by separating and refining waste lead storage battery lead as raw material, adopts the thermal decomposition of the polymer precursor-lead sulfate electrochemical oxidation coupling technology, and prepares PbO2 by anodic oxidation of PbSO4, and the obtained PbO2 It can be directly used as electrocatalytic electrode material. It mainly includes surface treatment of titanium substrate, intermediate layer coating, drying and roasting, active layer coating, electrode drying, PbSO4 electrochemical oxidation and other processes. The method of the invention is simple, and can adapt to different electrode use requirements by changing the electrolyte and operating conditions. At the same time, the rare earth mixture is added to the electrochemical oxidation solution, and the electrode surface can be further improved by the rare earth modification technology to realize the regulation and control of the electrode performance.

Description

technical field [0001] The invention relates to a preparation method of a titanium-based insoluble anode, which belongs to the technical field of material preparation, especially the field of electrode material preparation; it also belongs to the technical field of three wastes treatment and resource utilization, especially the technical field of comprehensive utilization of waste lead storage batteries. Background technique [0002] In the process of organic electrochemical synthesis, the oxidation or reduction process is realized by electron transfer between the organic reactant or medium (electron carrier) and the electrode, and generally no harmful or dangerous oxidation or reduction reagents are used. Compared with chemical methods, electrochemical methods for organic synthesis have the following advantages: [0003] (1) The reaction process can be controlled by the electrode potential to improve the selectivity of the target product; [0004] (2) The reaction can be c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/10H01M10/54
CPCY02W30/84
Inventor 王雅琼范春红许文林聂文孙燕子贾哲华
Owner YANGZHOU UNIV
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