RRDE rotating ring disk electrode

The RRDE rotating ring disk electrode combines electrode theory with fluid dynamics, and is therefore also known as a fluid dynamics electrode. The basic principle of its working principle is that material transfer and current density are controlled by electrochemically active substances, and the movement of electrochemically active substances follows the laws of fluid dynamics.

The RRDE rotating ring disk electrode is one of the important tools in electrochemical measurement. Here is a detailed introduction to it:

1、 Structural composition

The RRDE rotating ring electrode consists of three parts: the middle disk electrode, the outer ring electrode, and the insulation layer between them. All three have smooth surfaces and are on the same horizontal plane. Disk electrodes are typically loaded with the material being studied, while ring electrodes are typically made of platinum or gold. In order to achieve excellent electrode performance, there are special requirements in terms of machining accuracy, transmission device, speed measurement system, geometric shape, concentricity, and insulation performance of ring and disk electrodes.

2、 Working principle

The RRDE rotating ring disk electrode combines electrode theory with fluid dynamics, and is therefore also known as a fluid dynamics electrode. The basic principle of its working principle is that material transfer and current density are controlled by electrochemically active substances, and the movement of electrochemically active substances follows the laws of fluid dynamics. By rotating the disk, convection can be forced to accelerate the material transfer speed, thereby enhancing the mass transfer effect of the electrode process and facilitating in-depth research on electrode reactions.

3、 Technical indicators

Main technical parameters:

Power requirements: 24.0 VDC (± 5%), 5A (low voltage DC equipment)

Power adapter: 100 to 240 VAC, 1.4 to 0.7 A, 50 to 60 Hz

Environmental temperature: 10 ℃ to 40 ℃

Higher applied voltage: ± 15 V

Higher applied current: ± 1 A

Applicable current operating range: ± 100 pA to ± 1 A

Current range: 8 levels (from ± 100 nA to ± 1 A)

AC impedance frequency range: 10 μ Hz-1 MHz

Frequency accuracy: ± 10 ppm

Bandwidth (3 dB):>15 MHz

Instrument dimensions:

160 × 324 × 255 mm

(6.3 × 12.75 × 10.0 in)

Weight:

4.6 kg (10.2 lb)

4、 Application Fields

It has a wide range of applications in the field of electrochemistry, including but not limited to:

1. Catalyst research and evaluation: such as hydrogen fuel cell catalysts, lithium air battery catalysts, etc

2. Electrochemical kinetics research: used to study the kinetic parameters of various electrochemical reactions

3. Research on electrode reaction mechanism: By studying the intermediate products and accompanying adsorption phenomena of electrode reaction, the mechanism of electrode reaction is revealed

4. Research on Metal Corrosion: Simulating the Corrosion Process of Metals in Different Environments, Investigating Corrosion Mechanisms and Protective Measures

5. Electroanalytical Chemistry and Electro Organic Synthesis: Used for analyzing the products and processes of electrochemical reactions, as well as synthesizing organic compounds

5、 Operation and Control

It has a flexible operating mode, which can be manually controlled for rotation and ventilation through the front panel switch, or connected to the electrochemical workstation through the rear panel control interface to achieve automated control. The size and speed of the gas volume can be controlled through corresponding regulating valves and knobs.

VI. Summary

The RRDE rotating ring disk electrode, as an important tool for electrochemical measurement, plays a crucial role in the field of electrochemistry due to its structure and excellent performance. Through in-depth research and analysis of electrode reactions, strong support can be provided for scientific research and technological applications in related fields.