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Method for preparing novel Ti-substrate PbO2 electrode

A matrix and electrode technology, applied in the direction of electrodes, electrolytic components, electrolytic process, etc., can solve the problems of short service life, low bonding force between the surface layer and the matrix, and low component content, and achieve good conductivity, low density, and mechanical properties high effect

Active Publication Date: 2015-02-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing PbO 2 Electrode preparation methods mainly include electrodeposition method, coating method, hot dip method, sol-gel method, etc. The electrode β-PbO 2 The composition content is low, the bonding force between the surface layer and the substrate is not high, and the service life is short

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A new type of Ti matrix PbO 2 The preparation method of the electrode is as follows:

[0026] (1) Selection and pretreatment of substrate

[0027] The electrode substrate chooses titanium metal called "space metal" and "biophilic metal". The pretreatment method of the titanium substrate is as follows:

[0028] a) Cutting: processing the titanium plate into a Ti substrate with a length*width*thickness of 100mm×100mm×0.70mm;

[0029] b) Polishing: firstly use 200-mesh sandpaper to remove oxides and dirt on the surface of the Ti substrate to smooth the surface and edges; then use 600-mesh sandpaper to further smooth the surface and reduce the edges and corners of the Ti substrate; finally, use ultrasonic bathing Clean the Ti substrate by the device and set it aside;

[0030] c) Alkaline washing: completely immerse the polished Ti matrix in 5% by mass Na 2 CO 3 In the solution, heat the solution to boiling for 30 minutes; cool and wash;

[0031] d) Pickling and etching: immerse the T...

Embodiment 2

[0039] (1) Selection and pretreatment of substrate

[0040] The operation method of this step is the same as that in Example 1, and it is mainly divided into four steps: cutting, polishing, alkaline washing, and pickling etching.

[0041] (2) Preparation of the intermediate layer

[0042] The operation steps are the same as in Example 1. The main difference is that ① the titanium substrate is completely immersed in the coating solution for 2 minutes; ② dried in an oven at 100-120 ℃ for 15 minutes to ensure that the solvent is completely volatilized; heated in a muffle furnace with a set temperature Oxidize for 20min;

[0043] (3) Anodic electrodeposition of PbO 2

[0044] This operation step Pb + Oxidized to PbO 2 Conditions: At current density 3.8×10 -2 A / cm 2 ;Temperature 60℃; Additive NaF concentration 0.48g / L; pH value 1; Pb(NO 3 ) 2 At a concentration of 255g / L, oxygen is chemically adsorbed on the surface of the electrode in the form of ·OH, and these adsorbed ions are combined w...

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PUM

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Abstract

The invention relates to a method for preparing a novel Ti-substrate PbO2 electrode, belongs to the technical field of novel electrodes, and in particularly relates to a technique for preparing the PbO2 electrode with high beta-PbO2 content based on a Ti substrate. The method mainly comprises the following three steps of: selecting and pre-treating the substrate, preparing a middle layer and carrying out anodic electrodeposition of PbO2. The method for preparing the novel Ti-substrate PbO2 electrode, disclosed by the invention, is used for optimizing the method and conditions for prpearing the PbO2 electrode so as to form a novel electroplating method, wherein the novel electroplating method comprises the following steps of: firstly preparing the middle layer, and electrodepositing to obtain PbO2 so as to obtain the Ti-substrate PbO2 electrode with high betal-PbO2 content.

Description

Technical field [0001] The invention relates to a Ti matrix PbO 2 An electrode preparation method belongs to the technical field of new electrode preparation. Background technique [0002] Electrodes are an important part of the electrochemical oxidation system, and electrodes with good performance have always been a research focus. At present, the electrodes used in electrochemical oxidation technology mainly include graphite electrodes and PbO 2 Electrode, platinum electrode, RuO 2 Electrodes, glassy carbon electrodes, BDD electrodes, etc. Compared with graphite electrode, β-PbO 2 The electrode has a high oxygen evolution potential and good corrosion resistance; compared with platinum electrode and RuO 2 Compared with electrode, glassy carbon electrode and BDD electrode, PbO 2 The electrode has the advantage of lower price, so PbO 2 Electrodes have important application prospects in the field of electrochemical oxidation treatment technology. For PbO 2 The composition analysis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/10C25C7/02C25D17/10
Inventor 崔兆杰马千驰肖海吴震峰
Owner SHANDONG UNIV