Sodium metal is highly reactive with moisture and oxygen, requiring storage and handling under inert atmosphere to prevent oxidation and safety hazards. Ultra-thin discs (≤0.2 mm) require current collector support to avoid plastic deformation during cell assembly.

• Atmosphere Constraint: Store and handle sodium metal discs exclusively within an argon-filled glovebox with oxygen and moisture levels below 1 ppm.
• Mechanical Stability Constraint: Use aluminum or copper current collector-supported configurations for disc thicknesses at or below 0.2 mm to prevent localized plastic deformation during handling.
• Contamination Prevention: Avoid exposure to any protic solvents or atmospheric gases, as sodium metal reacts exothermically with water and forms a passivating oxide layer in air.

This procedure outlines the safe transfer and integration of sodium metal discs into an electrochemical half-cell under inert atmosphere. Strict adherence to glovebox protocols is required to prevent material degradation and ensure operator safety.

Required Equipment: Argon-filled glovebox (O2 and H2O < 1 ppm), Ceramic or PTFE-coated tweezers, Stainless steel coin cell casing components

1. Prepare Glovebox Atmosphere
   Verify that the argon glovebox maintains oxygen and moisture concentrations below 1 ppm before introducing any sodium metal.
2. Retrieve Sodium Disc from Sealed Packaging
   Open the vacuum-sealed or argon-filled packaging inside the glovebox using ceramic scissors to avoid contamination.
3. Inspect Disc Integrity
   Visually inspect the sodium disc for any discoloration, pitting, or surface oxidation, discarding any compromised samples.
4. Transfer Disc to Coin Cell Base
   Using PTFE-coated tweezers, gently lift the sodium disc by its edge and center it onto the stainless steel coin cell base.
5. Assemble Half-Cell Stack
   Place the separator, electrolyte, and working electrode sequentially on top of the sodium disc, ensuring no lateral shift occurs.
6. Crimp the Coin Cell
   Transfer the assembled cell stack to a hydraulic crimping press and apply the manufacturer-specified pressure to seal the casing.
7. Remove Cell from Glovebox for Testing
   Confirm the cell is hermetically sealed before transferring it out of the glovebox for electrochemical characterization.

This Atomfair sodium metal disc offers customizable dimensions and three collector configurations (Al, Cu, unsupported) to support non-standard sodium-ion half-cell testing, with ISO 9001 manufacturing ensuring material consistency. The product's primary value lies in eliminating structural variables for baseline electrochemical analysis, though users must account for handling constraints with ultra-thin discs and the need for inert atmosphere processing.

Positive

• Customizable dimensions for non-standard cells: Fully customizable diameter and thickness allow precise fitment for proprietary cell hardware, enabling consistent baseline testing in specialized sodium-ion battery research.
• Three collector substrate options: Aluminum, copper, and unsupported configurations provide flexibility to optimize electrolyte validation workflows and minimize cost-to-performance barriers for different experimental setups.

Trade-offs

• Handling risk for ultra-thin discs: For thickness levels ≤0.2 mm, current-collector supported discs are strictly recommended to eliminate localized plastic deformation, requiring careful selection and handling during assembly.
• Requires inert atmosphere processing: High-purity sodium metal is highly reactive with moisture and oxygen, necessitating glovebox or dry-room conditions for storage and cell assembly to prevent degradation.

Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.

To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.

Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).