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636A Rotating Ring-Disk Electrode (RRDE)

Highlights​​

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  • Rotating Ring-Disk Electrode (RRDE), Rotating Disk Electrode (RDE) or Rotating Cylinder Electrode (RCE) Configuration

  • Rotational Speeds to 10,000 RPM

  • A variety of Disk and Ring-Disk Electrode selections: different electrode materials; Quick-Change versus Fixed configurations; PTFE versus PEEK shroud

  • On/Off and Rotational Rate Control through DAC control of many potentiostats from Princeton Applied Research

Applications and Software​

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A RRDE system uses two potentiostats or a bipotentiostat to separately polarize a Ring electrode and a Disk electrode. These two electrodes are co-mounted on a specially designed electrode tip. Fluid flow created by the rotation of this tip in electrolyte causes mass-transport of the products from electrochemical reaction at the inner disk electrode to be measured by outter ring electrode. This study allows investigation of electrochemical reaction paths (mechanisms) common to fuel cell catalyst evaluations.

A RDE system uses a single potentiostat to polarize a Disk electrode. Rotation of this disk electrode encourages mass-transport of ions in solution to the electrode surface. This increased flux benefits physical electrochemistry applications, such electroplating and fundamental research.

A RCE system uses a larger area electrode that is a different form. This is common configuration for studying velocity-sensitive electrochemical corrosion such as in an oil and gas pipeline.

Specifications

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  • Input Power: Switching power supply for 115V AC, 60 Hz or 240V AC, 50 Hz

  • Weight: Body with base: 23 lbs Control unit: 11.5lbs

  • Speed Control: Closed loop servo-system. Temperature compensated tach generator mounted on motorshaft, providing rotational speed information

  • Speed Range: 50RPM to 10,000RPM

  • Precision: Better than ±1%

  • Motor: 1/50 HP permanent magnet DC

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