Ring-disk electrode

Abstract

The invention discloses a ring-disk electrode body in the electrochemical analysis measuring electrode domain, which is characterized by the following: setting the ring and disk electrode at the axle and two bottoms at the same plane with macromolecular material insulating ring and adhesion layer between them; embedding the ring electrode in the end part of ring union body; connecting the ring union body with the screw of ring guide rod with guide matching face; contacting the disk electrode roof and the probe in the hole of disk guide rob bottom stickly; setting the ring and disk guide rod at the same axle with insulation sleeve and compacting by nut; setting the protection lid and sealing ring on the bottom of electrode body. The invention is applied to detect the diffusion coefficient and electrochemical parameter with large insulation resistance between ring and disk and small contact resistance in the signal guide system, which reduces the current noise and utility lifetime.

Description

technical field [0001] The invention relates to a measuring electrode for electrochemical analysis, in particular to a ring-disk electrode body composed of a ring electrode, a disk electrode and an electrode signal lead-out system. Background technique [0002] In the electrochemical analysis system, the electrode is an important measurement tool for determining the diffusion coefficient and electrochemical parameters of the solution system. Although there are many types of electrodes, up to tens of thousands, it is still not enough to study the mechanism of the electrode process and the intermediate products of the electrode reaction. Using the principle of hydrodynamics to explore the electrochemical behavior of the electrode reaction, the rotating ring-disk electrode is an effective means to study complex electrochemical reactions and detect reaction intermediates. At present, there are many types of imported or domestic rotating ring-disk-electrodes in use, and their st...

AI Technical Summary

Problems solved by technology

The main defects caused by this are: first, there is a gap between the plastic sleeve and the ring and the disc lead-out rod, which will cause axial movement, thereby affecting the insulation performance between the ring and the disc, and also causing the coaxiality of the electrodes to be out of tolerance; Second, the spring is long and infinite in the circumferential direction, and twisting vibration will occur during rotation, which will cause the electrical contact resistance of the disk electrode to increase and the resistance value to be unstable, and increase the current noise; third, the electrode measuring head is inconvenient to replace The scope of use of the electrode, and the external solution is easy to enter the inside of the electrode, causing corrosion, affecting the performance and service life

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