Carbon paste electrode and preparation method thereof

A carbon paste electrode and carbon paste technology, applied in the field of electrochemical analysis, can solve the problems of troublesome, low efficiency, time-consuming and labor-intensive surface renewal of carbon paste electrodes, and achieve the effects of easy reuse, high efficiency and low price

Inactive Publication Date: 2010-06-30
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, it is cumbersome to update the surface of carbon paste electrodes in the prior art. For example, Chinese patent 200710055795.6 discloses a chemically modified carbon paste bismuth film electrode. When updating the electrode surface, it needs to be polished on sulfuric acid paper or sandpaper. Polishing to flatten the electrode surface
This surface renewal needs to be done manually, which is not only time-consuming and labor-intensive, but also inefficient

Method used

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  • Carbon paste electrode and preparation method thereof
  • Carbon paste electrode and preparation method thereof

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preparation example Construction

[0029] The present invention also provides a method for preparing a carbon paste electrode, comprising:

[0030] Fill the carbon paste inside the electrode shell;

[0031] Installing one end of the electrode lead wire inside the electrode shell and connecting it with the carbon paste, and leading the other end of the electrode lead wire out from the inside of the electrode shell;

[0032] The renewal brush is set on the outside of the electrode casing, and the renewal brush can rotate relative to the electrode casing;

[0033] A rotary driving device is installed on the updating brush, and the rotating driving device can drive the updating brush to rotate relatively around the electrode casing.

[0034] According to the present invention, with the electrode shell as the center, carbon paste is filled inside the electrode shell, electrode lead wires are drawn out from the electrode shell, a renewal brush is placed on the outside of the electrode shell, and the renewal brush is...

Embodiment 1

[0045] Take 55mg of carbon powder and 45mg of methyl silicone oil and grind them carefully in an agate mortar to obtain a uniform and stable carbon paste mixture; then use a small spoon to put the carbon paste mixture into a cleaned 4cm long, 1mm internal diameter, 1mm external diameter One end of the polytetrafluoroethylene electrode shell of 3 mm; the other end of the polytetrafluoroethylene shell is plugged with a copper rod with a length of 5 cm and a diameter of 1 mm as the electrode lead, and the part of the copper rod inserted into the electrode shell is 3 cm long; A renewal brush with a polytetrafluoroethylene sleeve and a sandpaper brush body is sheathed on the outside of the polytetrafluoroethylene casing, the brush body is connected to a rotating rod, and the rotating rod is connected to a motor. Turn on the motor, and the rotating rod drives the renewal brush to rotate around the electrode shell to polish the surface of the carbon paste electrode smooth.

[0046] P...

Embodiment 2

[0049] Take 65mg of carbon powder and 35mg of paraffin oil and grind them carefully in a mortar to obtain a uniform and stable carbon paste mixture; then use a small spoon to put the carbon paste mixture into a cleaned 7cm long, 3mm inner diameter, and 6mm outer diameter One end of the plastic electrode shell; the other end of the plastic shell is plugged with a stainless steel rod with a length of 7 cm and a diameter of 3 mm as the electrode lead, and the part of the stainless steel rod inserted into the electrode shell is 4 cm long; there will be a plastic sleeve and a sulfuric acid paper brush The updating brush of the body is covered on the outside of the plastic tube shell, the brush body is connected with the rotating rod, and the rotating rod is connected with the motor. Turn on the motor, and the rotating rod drives the renewal brush to rotate around the electrode shell to polish the surface of the carbon paste electrode smooth.

[0050] Place the carbon paste electrod...

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Abstract

The invention provides a carbon paste electrode, which comprises an electrode pipe shell, a carbon paste filled inside the electrode pipe shell and an electrode lead wire led out of the inside of the electrode pipe shell. The electrode lead wire is connected with the carbon paste. The outside of the electrode pipe shell is sleeved with an updating brush which can rotate relative to the electrode pipe shell. The updating brush is connected with a rotation driving device which drives the updating brush to rotate relatively around the electrode pipe shell. The invention also provides a preparation method for the carbon paste electrode, which comprises the following steps: filling the carbon paste inside the electrode pipe shell; arranging one end of the electrode lead wire inside the electrode pipe shell and connecting the end of the electrode lead wire with the carbon paste, and leading the other end of the electrode lead wire out of the inside of the electrode pipe shell; sleeving the updating brush outside the electrode pipe shell, wherein the update brush can rotate relative to the electrode pipe shell; and connecting the rotation driving device on the updating brush, wherein therotation driving device can drive the updating brush to rotate relatively around the electrode pipe shell.

Description

technical field [0001] The invention relates to the field of electrochemical analysis, in particular to a carbon paste electrode and a preparation method thereof. Background technique [0002] Electroanalytical chemistry is a type of analytical method established on the basis of measuring the electrical response of a certain chemical system or sample. It has the advantages of being able to operate in turbid solutions, high sensitivity, easy to miniaturize, continuous operation of the electrode system, and online determination of substances. Changes and many other advantages have been widely used in recent years. However, in electroanalytical chemistry, gold electrodes, platinum electrodes, glassy carbon electrodes, and graphite electrodes are generally used as working electrodes. During use, due to the deposition of electrolytic products or the contamination of the electrode surface, the surface of these electrodes is prone to passivation. , resulting in poor reproducibilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
Inventor 郏建波
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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