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Process of preparing metal oxide electrode by polymeric precursor thermal decomposition method

A thermal decomposition method and process method technology, applied in the field of electrode material preparation, can solve the problems of poor precursor adhesion, low precursor viscosity, low deposition efficiency, etc., and achieve good electrical conductivity, good bonding performance, and high electrocatalytic activity. Effect

Inactive Publication Date: 2007-08-15
YANGZHOU UNIV
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AI Technical Summary

Problems solved by technology

At present, the commonly used precursors in the thermal decomposition method are alcohol solutions or aqueous solutions of metal salts. Such precursors have low viscosity and poor adhesion on the metal substrate, resulting in problems such as uneven coating, low deposition efficiency, and easy falling off.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] (1) Preparation of polymeric precursor solution

[0029] Dissolve citric acid in ethylene glycol at 20°C to 100°C. After the citric acid is completely dissolved, add SnCl 4 ·5H 2 O and SbCl 3 Thoroughly stir and keep the temperature for 10-60 minutes to prepare a transparent precursor solution containing tin and antimony; the mole fraction of citric acid is 0.1-0.4, the mole fraction of ethylene glycol is 0.6-0.8, and the mole fraction of metal is 0.02-0.1; The molar ratio of Sn to Sb is 1:0.05-0.3.

[0030] (2) Preparation of metal oxide electrodes

[0031] Taking titanium as the substrate, after removing oxides and oil stains on the surface, it is etched with acid, and then the polymerization precursor solution is coated on the titanium substrate by dipping, brushing and other methods. Heat treatment in an oven at 100°C to 200°C for 10 minutes to 60 minutes, then bake in a resistance furnace at 350°C to 600°C for 5 minutes to 30 minutes; this coating-heat treatmen...

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Abstract

The invention discloses a technique to preparing metallic oxide electrode with poly forerunner body thermal decomposition method, which comprise the following steps: preparing poly forerunner body solution with metallic element; multiple-coating poly forerunner body solution on ground-mass; thermal-decompositing; firing; getting the product; belonging to preparing technical domain of electric pole material; reacting polybasic carboxylic acid , polyatomic alcohol and metallic compound; getting the poly forerunner body solution; making the ground-mass as one of titanium, tantalum, niobium, zirconium and non-corrodible steel; This product possesses high electrocatalysis activity, good conductive property, long age and low cost, which can be used to electrochemical synthesis and negative pole protecting domains.

Description

technical field [0001] The invention relates to a process for preparing a mixed metal oxide electrode by thermal decomposition of a polymeric precursor, which is a process and technology for preparing a metal oxide electrode, and belongs to the technical field of electrode material preparation. Background technique [0002] For any electrochemical reaction, it is first required that the reaction can proceed in a specific direction, and at the same time, the occurrence of side reactions can be suppressed or the rate of side reactions can be slowed down; secondly, it is hoped that the consumption of electric energy can be reduced to improve economic benefits. Therefore, electrode materials play a very important role in the electrolysis industry and electrometallurgy industry. In general, the selection of electrode materials should mainly consider the following factors: [0003] (1) It has high electrocatalytic activity, which is an important factor affecting the current effic...

Claims

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Application Information

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IPC IPC(8): C25B11/04
Inventor 王雅琼许文林顾彬沙红霞
Owner YANGZHOU UNIV
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