Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of titanium-based composite anode and its preparation method and application

A composite anode and titanium-based technology, applied in the field of electrochemistry, can solve the problems of short service life and achieve the effects of long service life, environmental friendliness and low energy consumption

Active Publication Date: 2018-06-19
CENT SOUTH UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the preparation methods of titanium-based composite anodes are various, the process is simple, the coating has high catalytic activity and good selectivity, but there is a fatal disadvantage: short service life

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of titanium-based composite anode and its preparation method and application
  • A kind of titanium-based composite anode and its preparation method and application
  • A kind of titanium-based composite anode and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A titanium-based composite anode of the present invention, such as figure 1 As shown, it includes a titanium substrate 1, a dense protective intermediate layer 2 and an active surface layer 3; wherein the dense protective intermediate layer 2 is a titanium dioxide layer, the titanium substrate 1 is a metal titanium plate with a thickness of 1.2mm, and the active surface layer 3 is IrO 2 layer; TiO2 layer and IrO 2 Layers are generated synchronously in situ.

[0040] The preparation method of the titanium-based composite anode of this embodiment comprises the following steps:

[0041] 1) Cut a metal titanium plate with a thickness of 1.2mm into a specification of 5cm×5cm, then polish it with sandpaper, degrease and clean it in a boiling 5wt% NaOH solution for 1h, and then etch it in a boiling 15wt% oxalic acid solution for 1h, Finally, it was rinsed with deionized water to obtain a titanium metal plate with a clean surface.

[0042] 2) Put the metal titanium plate wit...

Embodiment 2

[0047] A titanium-based composite anode of the present invention, such as figure 1 As shown, it includes a titanium substrate 1, a dense protective intermediate layer 2 and an active surface layer 3; wherein the dense protective intermediate layer 2 is a titanium dioxide layer, the titanium substrate 1 is a metal titanium plate with a thickness of 1.2mm, and the active surface layer 3 is MnO2 layer; titanium dioxide layer and MnO 2 Layers are generated synchronously in situ.

[0048] The preparation method of the titanium-based composite anode of the present embodiment includes the following steps:

[0049] 1) Cut a metal titanium plate with a thickness of 1.2mm into a size of 2cm × 2cm, then sand it with sandpaper, wash it with alkali for 1 hour in a boiling 8wt% NaOH solution, and then etch it in a boiling 15wt% oxalic acid solution for 1 hour , and finally rinsed with deionized water to obtain a metal titanium plate with a clean surface.

[0050] 2) Put the metal titanium...

Embodiment 3

[0054] A titanium-based composite anode of the present invention, such as figure 1 As shown, it includes a titanium substrate 1, a dense protective intermediate layer 2 and an active surface layer 3; wherein the dense protective intermediate layer 2 is a titanium dioxide layer, the titanium substrate 1 is a metal titanium plate with a thickness of 1.2 mm, and the active surface layer 3 is MnO 2 layer; titanium dioxide layer and MnO 2 Layers are generated synchronously in situ.

[0055] The preparation method of the titanium-based composite anode of the present embodiment includes the following steps:

[0056] 1) Cut a metal titanium plate with a thickness of 1.2mm into a size of 2cm × 2cm, then sand it with sandpaper, wash it with alkali for 1 hour in a boiling 12wt% NaOH solution, and then etch it in a boiling 12wt% oxalic acid solution for 1 hour , and finally rinsed with deionized water to obtain a metal titanium plate with a clean surface.

[0057] 2) Put the titanium m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a titanium-based composite anode, which comprises a titanium matrix, a dense protective intermediate layer and an active surface layer; the dense protective intermediate layer is a titanium dioxide layer, and the titanium dioxide layer and the active surface layer are synchronously formed in situ. The preparation method of the present invention comprises the following steps: 1) grinding and cleaning the titanium substrate, and setting aside; 2) placing the cleaned titanium substrate in a mixed solution of a surfactant and a strong oxidizing metal salt, and adjusting the pH value of the mixed solution Step 4 to 7, heating and reacting to obtain a titanium-based composite anode precursor; 3) roasting the titanium-based composite anode precursor to obtain a titanium-based composite anode. In the titanium-based composite anode of the present invention, the titanium dioxide layer and the active surface layer are synchronously formed in situ, and only one step is required to prepare the composite anode, with simple process steps and low energy consumption. The in-situ synchronously formed titanium dioxide layer is very dense, which can inhibit the further oxidation of the matrix, and the active surface layer formed on the surface has higher catalytic activity.

Description

technical field [0001] The invention relates to the field of electrochemistry, in particular to a titanium-based composite anode and its preparation method and application. Background technique [0002] Titanium-based composite anode is an electrode composed of titanium or titanium alloy as the substrate and coated with metal oxides of active elements such as Sb, Ir, Pb, Mn, etc. It has high catalytic activity, delays the passivation of the substrate, and has good selectivity for the reaction. advantage. Traditional electrodes, such as graphite anodes, are not strong enough, and lead-silver alloy anodes have disadvantages such as lead dissolving into the electrolyte. According to the different uses and requirements of the electrode, the coating and structure of the electrode can be designed in a targeted manner to reduce the occurrence of side reactions and improve the yield and current efficiency of the target product. This titanium-based composite anode is widely used in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/10
Inventor 郭华军陈鑫王志兴李新海
Owner CENT SOUTH UNIV