Pine rotating disc ring electrode device

Product Name: Pine Rotating Disc Ring Electrode Device

English: Pine Modular Speed Shooter (MSR)

Brand: Pine

Device composition: controller, host, protective cover, accessories (rotating rod, glassy carbon disk electrode, etc.), etc.

The controller includes a speed setting knob, a speed display screen, etc. The controller is connected to the host through control wires, with the rotating rod installed at the lower end of the host and the glassy carbon disk electrode head installed at the lower end of the rotating rod. There are signal terminals on the host, which are used to connect the signal lines with the electrochemical workstation.

1、 Principle

1. Product principle:

The rotating disk electrode device is a type of working electrode that can rotate, belonging to the category of electrochemical accessories, specifically designed for electrochemical workstations and applied in electrochemical research, such as electrochemical catalysis research, electrochemical corrosion research, etc.

Electrochemical workstation is the most common electrochemical research instrument, commonly used for scientific research and testing. The typical electrochemical research mode is a 3-electrode system, where the electrochemical workstation is connected to three electrodes: the working electrode, the counter electrode, and the reference electrode for research. Among them, the working electrode is the research object (researchers load the sample to be studied on the working electrode head), the role of the electrode is to form an electrical circuit with the working electrode for research, and the role of the reference electrode is to provide a reference indicator for the potential on the working electrode.

2. Working process:

Taking the example of researchers using a rotating disk electrode device to study the oxygen reduction activity of Pt catalyst in hydrogen fuel cells. During the experiment, the sample (catalyst) to be studied is dropped onto the surface of the working electrode tip, and the working electrode tip is placed in an electrolytic cell containing an electrolytic solution. Start the controller, set the required speed for the research institute, or control the speed through the electrochemical workstation software. The host drives the working electrode head to rotate, and due to its high coaxiality, a uniformly thick and controllable diffusion layer is formed at the interface between the working electrode head and the electrolytic solution (the thickness of the diffusion layer is in the micrometer range and cannot be achieved through magnetic stirring or other mechanical stirring).

The electrochemical workstation is used to apply a certain excitation signal to the working electrode, such as a voltage (which is relative to the reference electrode). The oxygen in the electrolytic solution comes into contact with the sample (catalyst) on the surface of the working electrode tip. After being excited by the voltage of the electrochemical workstation, a reduction reaction occurs, producing a reduction current, that is, a negative current. The generated electrical signal is then measured by an electrochemical workstation, and researchers can study the performance of Pt catalysts based on rotational speed, electrical signal, and other parameters.

2、 Function

Researchers utilized the rotational characteristics of a rotating disk electrode to conduct electrochemical kinetics studies. The higher the rotational speed of the working electrode tip, the faster the mass transfer of reactants, the greater the degree of reaction, and the larger the generated current signal. The electrochemical workstation applies electrical signals to the surface of the working electrode head to excite chemical reactions and measures the electrical signals generated by the electrochemical reactions. Researchers can study the performance of samples (catalysts) based on electrical signals, rotational speed, and other parameters. Mainly used for evaluating the activity of materials or simulating corresponding testing environments, such as testing the activity of air cathode catalysts in fuel cells, involving the fields of batteries and electrochemical analysis, and simulating corrosion research in oil pipelines, involving the field of corrosion science.

1. Environmental temperature: 10 ℃ to 40 ℃

2. Speed control: closed-loop servo motor system

3. Speed range: 50 to 10000 RPM

4. Display accuracy: RDE+RRDE speed error<1%

Schematic diagram of rotating disk electrode device

Description: The controller includes a speed setting knob, a speed display screen, etc. The controller is connected to the host through control wires, with the rotating rod installed at the lower end of the host and the glassy carbon disk electrode head installed at the lower end of the rotating rod. There are signal terminals on the host, which are used to connect the signal lines with the electrochemical workstation. Among them, the electrolytic cell contains electrolytic solution, and the working electrode head is immersed in the electrolytic solution for testing. Electrolytic cell users can configure it themselves in the laboratory.