High speed rotating ring disk electrodeIt is a professional device that combines fluid dynamics and electrochemical analysis, which achieves real-time detection and kinetic research of reaction intermediates through the synergistic effect and high-speed rotation of concentric disks and ring electrodes.
Key Features:
The rotating electrodes are connected through silver carbon brushes to achieve signal output/input, and each disk and ring has two silver carbon brushes to provide reliable and stable connections.
The host has dual functions of RDE and RRDE, and the speed can be manually controlled.
The speed control adopts a closed-loop design with a built-in speed measurement device to ensure that the actual speed is consistent with the set speed.
Adopting a humanized design, it is convenient to install and replace electrode rods and carbon brushes. The electrodes are easy to rinse, clean, and replace, making it very easy to move and replace the electrolytic cell.
Precautions for operation:
Electrode calibration:
Before use, the collection efficiency NN needs to be verified through a standard system (such as K3 [Fe (CN) ₆]) to ensure that the geometric parameters conform to the theoretical values.
Speed control:
At high speeds (>5000RPM), turbulent interference should be avoided and laminar flow should be maintained to ensure the applicability of the Levich equation.
Maintenance points:
Regularly polish the surface of the disc (such as Al ₂ O ∝ suspension) to remove adsorbates.
Replace the worn silver carbon brush in a timely manner to prevent signal noise.
Maintenance and troubleshooting:
Weak ring current signal: wear of silver carbon brush (contact resistance>10 Ω); Replace carbon brushes with silver content>80%.
Insulation failure (resistance<10M Ω): seal aging or electrolyte infiltration; Replace the PTFE insulation gasket.
Speed fluctuation>1%: motor bearing wear or unstable voltage; Calibrate power supply/replace servo motor.