Development and Characterization of Novel Flow Injection, Thin-Layer, and Batch Cells for Electroanalytical...

Area of Science:

• Electrochemistry
• Analytical Chemistry
• Materials Science

Background:

• Screen-printed electrode chips (SPECs) are widely used in electrochemical analysis.
• Existing cell designs for SPECs can be cumbersome and limit analytical capabilities.

Purpose of the Study:

• To design, fabricate, and evaluate three novel electrochemical cells for SPECs.
• To demonstrate the versatility and advantages of these cells for flow injection, thin-layer, and batch measurements.

Main Methods:

• Fabrication of three acrylic-based cells: flow, thin-layer, and universal batch cells (UBC).
• Integration of SPECs into the custom-designed cell cavities.
• Electrochemical measurements including chronoamperometry and voltammetry were performed.

Main Results:

• The cells provide convenient electrical connection, protection, and sealing for SPECs.
• The flow cell allows dead volume customization and visual inspection.
• The thin-layer cell enables near-ideal steady-state voltammetry.
• The UBC supports a wide range of sample volumes and conditions, enabling novel stirred-solution techniques with high signal-to-noise ratios.

Conclusions:

• The novel cells enhance the utility and performance of SPECs in various electrochemical techniques.
• These versatile cell designs offer significant advantages for analytical applications.
• The UBC is particularly noteworthy for its adaptability and advanced capabilities.