Rotating Disc Electrode Device (RRDE)

The Rotating Disc Electrode Device (RRDE) is a product of the combination of electrode theory and fluid dynamics, also known as a fluid dynamics electrode. It consists of a short stainless steel shaft and several millimeter diameter electrodes forming a concentric circular electrode system, with small electrode volume and quick interchangeability.

　　Rotating Disc Electrode Device (RRDE)It is a product of the combination of electrode theory and fluid dynamics, also known as fluid dynamics electrode. It consists of a short stainless steel shaft and several millimeter diameter electrodes forming a concentric circular electrode system, with small electrode volume and quick interchangeability. The electrode surface has good axial symmetry and small roughness to ensure measurement accuracy. Meanwhile, the device is also equipped with an adjustable valve control system to regulate the flow rate of inert gas used for purifying the electrolyte.

2、 Working principle

　　Rotating Disc Electrode Device (RRDE)The working principle of is based on the control of material transfer and current density by electrochemically active substances, and the movement of these electrochemically active substances follows the laws of fluid dynamics. When the disk electrode rotates, the solution can undergo regular motion (i.e. laminar motion) on the electrode surface, and the thickness of the diffusion layer on the electrode surface varies with the speed of rotation. This type of movement helps to better control the reaction conditions on the electrode surface, improving measurement accuracy and reliability.

3、 Application Fields

It has a wide range of applications in modern electrochemical measurements, including but not limited to the following aspects:

1. Detection of electrode reaction products: The use of a rotating disk electrode can detect the form and amount of electrode reaction products, especially intermediate products, or the stability of the reaction products captured on the disk electrode.

2. Research on the mechanism of complex electrode reactions: By measuring parameters such as current and voltage during the electrode reaction process, the mechanism of complex electrode reactions can be detected and more information about the electrode process can be obtained.

3. Research on Electroplating Additives: The exploration of the mechanism of action of electroplating additives or the comparison of additive performance can be tested using a rotating disk electrode.

4. New energy research: Rotating disk electrodes also play an important role in the research and evaluation of hydrogen fuel cell catalysts, lithium air batteries, electrochemical kinetics, oxygen reduction reactions (ORR), oxygen evolution reactions (OER), hydrogen evolution reactions (HER), and carbon dioxide reduction reactions (CO2RR).

4、 Technical features

1. High precision: The rotating disk electrode can maintain high-precision rotation and modulation at high speeds, ensuring the accuracy of measurement results.

2. Operability: The device is designed reasonably, easy to operate and maintain, and is equipped with a gas control device and a convenient electrolytic cell cleaning system.

3. Multifunctionality: The rotating disk electrode can not only operate as an independent device, but also be directly connected and controlled with other electrochemical analyzers or instruments to achieve more functions.

5Rotating Disc Electrode Device (RRDE)　Technical parameters:

The higher speed is 3000RPM, and the collection rate is 37%

Ring disk spacing: 320um Operating temperature: 10-25 ℃

Disk area: 0.2475CM2

Ring area: 0.1866CM2 glassy carbon disk electrode outer diameter: 5.61mm

Outer diameter of platinum ring: 7.92mm Inner diameter of platinum ring: 6.25mm

Disk material: Glass carbon ring material: Platinum

In conclusion,Rotating Disc Electrode Device (RRDE)It is a functional and widely used electrochemical measurement tool that plays an important role in modern electrochemical research.