Rotating Platinum Disk Electrode for Electrochemical Applications

Introduction

Disk electrodes are essential components for electrochemical experiments, commonly used in three-electrode setups. They are circular with a small ring around the edge and can be micromachined to a very small size. Disk electrodes are often used for cost-efficient disposable electrodes and are key applications for electrochemical techniques like cyclic voltammetry and impedance spectroscopy.

Technical specifications

Detail & Parts

Applications

Platinum Disc Electrodes are widely used in various electrochemical techniques for substrate analysis. Here are some key application areas:

• Electrochemical analysis: Disk electrodes are used in a variety of electrochemical analysis techniques, such as cyclic voltammetry, chronoamperometry, and impedance spectroscopy. These techniques can be used to study the electrochemical properties of materials, such as their redox behavior, conductivity, and capacitance.
• Electrocatalytic measurements: Platinum Disc Electrodes are commonly used as the disk electrode in rotating ring-disk electrodes (RRDEs) for electrocatalytic measurements. Due to its low electrocatalytic activity compared to Pt and Au, glassy carbon (GC) is often used as the disk electrode onto which the electrocatalyst is deposited.
• Direct dropping experiments: Very small Platinum Disc Electrodes can be used for direct dropping experiments, where a small drop of a solution of interest is put directly onto the electrode and the electrical impedance is measured.
• Fuel cells: Platinum thin films are crucial in fuel cells, providing high electro-catalytic property with low resistance.
• Solar cells: Platinum counter electrodes are used in solar cells made of dye-synthesized TiO2, improving the ionic diffusion rate and enabling high current draw.
• Gas electrodes and polymers: Platinum is deposited on various substrates like gas electrodes and polymers through impregnation and reduction methods. The sputtering technique allows for precise distribution of metal and homogenous particles with controlled thickness.

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