Method for preparing diamond-like thin film electrode

Abstract

In order to solve the problems of expensive instruments, strict experiment conditions in chemical vapor deposition method, and the problems of slow deposition speed in spite of moderate experiment conditions in direct current electrochemical electrolyzing organic compound for depositing diamond-like carbon, the invention provides a method for electrochemically fast preparing diamond-like carbon film electrode under ultrasonic and normal temperature and pressure. The method comprises the following steps: in an electrolytic cell, the electrodes fixed on the ultrasonicator (1) containing water is connected with a constant potential rectifier (8), -1.5 to -1.8 volts of potential is applied to the working electrodes, with continuous ultrasonic, the electrochemically electrolyzed organic compound is deposited to get the diamond-like carbon, the electrolysis process lasts for 2 to 7 hours, and a stable depositing modified electrode is acquired, namely the diamond-like carbon film electrode. The invention has the advantages of practicability and simple operation; moderate conditions and fast deposition speed; good performance of the deposited diamond-like carbon electrode; and wide selection scope of electrode material.

Description

Technical field: [0001] The invention relates to a preparation method of an electrode material, in particular to a diamond-like carbon film formed on an electrode or a conductive substrate connected to the electrode, which can be widely used in the field of electrode materials or the field of electrochemistry. Background technique: [0002] The electrode formed by the diamond film doped with boron has a stable surface, a wide electrochemical potential window and good corrosion resistance and anti-adsorption performance, and is widely used in electrochemical synthesis, electrochemical sewage treatment and other aspects. The preparation of diamond films is usually done by doping synthetic diamond film electrodes by high temperature chemical vapor deposition. Chemical vapor deposition method equipment is relatively expensive, and it needs to be carried out at high temperature and high vacuum, and the experimental conditions are harsh. In diamond, carbon is represented by sp 3...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the chemical vapor deposition method, the equipment used is relatively expensive, the experimental conditions are harsh, and the diamond-like carbon deposited by direct current electrochemical electrolysis of organic matter, although the experimental conditions are relatively mild, but the deposition speed is relatively slow. A method for quickly preparing a diamond-like thin film electrode electrochemically under normal temperature and pressure: in an electrolytic cell, each electrode fixed in an ultrasonic generator (1) filled with clear water is connected to a potentiostat (8) , apply a potential of -1.5 to -1.8 volts on the working electrode, under the action of continuous ultrasonic waves, electrochemically electrolyze the organic matter (7) to deposit diamond-like carbon, and continuously electrolyze for 2 to 7 hours to obtain a stable deposited film modified electrode, namely Diamond-like thin film electrode

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