Preparation method of carbon fiber ultramicroelectrode

Abstract

The invention discloses a preparation method of a carbon fiber ultramicroelectrode. The method comprises steps as follows: a carbon fiber and a copper wire are bonded through a conductive silver adhesive and axially sent into a glass capillary tube, the steel wire is sealed and fixed through paraffin, the glass capillary tube through which the carbon fiber penetrates is pulled into a carbon fiber strip electrode by a puller, after the paraffin in the glass tube is molten through heating and seals the tip, the paraffin left outside the tip of the capillary tube is cleaned and removed through acetone, and the carbon fiber ultramicroelectrode is obtained through electrochemical etching in a NaOH solution. The carbon fiber ultramicroelectrode can be prepared effectively with the method, the yield of the carbon fiber ultramicroelectrode is increased, batch production of ultramicroelectrodes is rapid and convenient, and the preparation cost of the ultramicroelectrode is reduced.

Description

technical field [0001] The invention relates to a preparation method for producing carbon fiber ultra-micro electrodes by an electrochemical etching method, belongs to the technical field of electrochemical analysis, and relates to the field of micro-nano structure processing. Background technique [0002] Ultramicroelectrodes usually include electrodes whose one-dimensional size is microns (10 -6 m) and nanoscale (10 -9 m) Two types of electrodes. Because when the one-dimensional size of the electrode is reduced from the millimeter level to the micron level, it shows many excellent electrochemical characteristics, such as high mass transfer rate, small time constant, low IR drop, high signal-to-noise ratio, high current density, etc., these The advantages are unmatched by millimeter-scale conventional microelectrodes. Moreover, the size of the ultra-microelectrode is very small, and the measured object is basically not damaged during the detection process, so it can be u...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that it is difficult to make micro-nano-sized carbon fiber electrodes for single-cell detection, and propose a method for producing carbon fiber electrodes with micron and nanometer diameters based on electrochemical etching, which is fast, convenient, and low-cost. Cost-effective mass production of carbon fiber ultramicroelectrodes

Images