Method for preparation of nano carbon fiber plate electrode

Abstract

The invention provides a nanometer carbon fiber electrode preparation method, and firstly the method uses the carbon fiber with diameter of not more than 10mum attached with the silver glue and metal thread to pass the capillary, and piercing a segment from the capillary; then, putting the carbon fiber tip piercing from the capillary on the flame to etching to nanometer scale; then, withdrawing the carbon fiber tip into the capillary; in capillary, injecting epoxy resin, making the carbon fiber electrode from the nanometer tip to the link part of carbon fiber and metal thread buried and sealed by epoxy resin; and finally, after epoxy resin solidifying, carefully polishing the front-end of capillary to expose the nanometer tip of carbon fiber, and obtaining nanometer carbon fiber electrode. The invention method is simple, low cost, and the prepared nanometer carbon fiber micro-electrode has the advantages of tightly sealed, easy to update disk electrode surface, strong shaking resistance, and so on.

Description

technical field [0001] The invention relates to a method for preparing a nano-carbon fiber disk electrode, and belongs to the technical fields of electrochemistry, analytical chemistry, electroanalytical chemistry and bioelectroanalytical chemistry. Background technique [0002] Due to its own advantages, carbon fiber electrodes have been successfully applied in the fields of electrochemistry and life sciences. Due to the advantages of small size, high mass transfer rate, small double-layer capacitance, and small ohmic polarization, nanodisk electrodes have been widely used in the kinetic research of electrochemical reactions and quantitative detection in electroanalytical chemistry. Obviously, carbon nanofiber disk electrodes combine the advantages of nanodisk electrodes and carbon fiber electrodes, but it is not easy to prepare nanoscale carbon fiber disk electrodes at present. First of all, there is no commercialized nano-carbon fiber; usually, the electrochemical etchin...

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Problems solved by technology

Obviously, carbon nanofiber disk electrodes combine the advantages of nanodisk electrodes and carbon fiber electrodes, but it is not easy to prepare nanoscale carbon fiber disk electrodes at present.

First of all, there is no commercialized nano-carbon fiber; usually, the electrochemical etching method is used to obtain a nano-scale carbon fiber cone, which is relatively complicated to operate and requires corresponding instruments to complete; secondly, the current insulation method for carbon fiber nano-tips Although there are many (such as fused glass insulation, electrophoretic paint insulation, polymer film insulation, paraffin insulation, etc.), in addition to the complicated process, these insulation methods are still nano-cone electrodes instead of disk electrodes after insulation.

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