General Purpose Electrochemistry Cell

The Dimension General Purpose Electrochemistry Cell replaces the Dimension Electrochemistry Cell and makes a closed cell when engaged. It is suitable for applications requiring volatile solvents. It is compatible with a wider range of materials and applications including Lithium battery applications.

The Dimension General Purpose Electrochemistry Cell, shown in Figure 1, accommodates circular or rectangular samples between 38 mm to 40 mm diameter (or length of the square) and includes the following components:

1. Base: The nickel plated tungsten alloy (for improved thermal conductivity) base includes 4 nickel plated NdFeB magnets, shown in Figure 2, to secure the EC cell to the EC chuck. Four flat-head screws, shown in Figure 2, secure the base to the ring (body).
2. Ring (body): A 2205 Stainless Steel alloy, selected for improved corrosion resistance, is used as the main EC cell body.
3. Insulating insert: An insert is used to electrically and chemically isolate the electrolyte from the EC cell body. This insert is available in two materials:

4. Bottom O-ring: The bottom O-ring, shown in Figure 3, is used to provide a seal between the insulating insert and the sample below it. O-rings are available in two materials:

5. Top O-ring: The top O-ring, shown in Figure 1, provides a seal between the insulating insert and the glass cover. Available in Viton and Kalrez.

6. "Glass" cover: A laser-cut fused silica cover is used, along with a Kalrez boot on the probe holder, to control electrolyte evaporation. Refer to TappingMode EC Probe Holder and ScanAsyst/Contact Mode EC Probe Holder for information about EC probe holders. Available from Bruker AFM Probes.
7. Captive (to prevent loss) button-head retaining shoulder (to prevent cracking the glass cover) screws, shown in Figure 1. These screws, with relieved threads and Viton O-rings to protect the glass cover, are designed to seal the glass cover against the top O-ring.
8. PVDF insulator: The electrodes are insulated from the conductive body by a PVDF insulator, shown in Figure 4.
9. Gold-plated pogo pins that connect the top of the sample to the cell base.
10. Electrodes.
11. A Second Generation Small Sample Adapter allows for small samples when needed. This supersedes the First Generation Small Sample Adapter.

Figure 1: The General Purpose Electrochemistry Cell. Shown with a gold sample.

Figure 2: The bottom of the General Purpose Electrochemistry cell, showing the magnets used to hold the cell to the EC Chuck.

Figure 3: EC Cell Body with Bottom O-Ring

Figure 4: PVDF insulator in body

The maximum scan zone, shown in Figure 5, is 7 mm, circular (approximately 4.9 mm square).

Figure 5: Scan zone in the GP EC Cell

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