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LIB

Assemble coin-cell LIB & test cycling
🎯 Difficulty ★★☆ Medium Duration About 1 day 🎯 Use Assemble coin cells to evaluate capacity and cycle stability of electrode materials.
📖 Principle
Li⁺ shuttles between electrodes to store and release energy.
Below are 5 steps. Open each to see how to do it and add products to your shared list.

📋 Workflow

Full workflow, products add-to-cart directly
1

Prepare slurry and coat

1 h
Mix active material, conductive agent, and binder, then coat onto the current collector.
💡 Tip Vacuum degas for uniformity
⚠️ Caution Use NMP solvent in a fume hood
🧪 Materials for this step (click to shop by spec/brand)
2

Punch and dry

1 h
Punch electrode discs and vacuum-dry to remove moisture.
💡 Tip Vacuum dry at 110 °C overnight
🧪 Materials for this step (click to shop by spec/brand)
3

Transfer to glovebox

30 min
Move electrodes, separator, Li foil, and electrolyte into an Ar glovebox.
💡 Tip Keep H₂O/O₂ levels low
⚠️ Caution Electrolyte is moisture-sensitive; seal well
🧪 Materials for this step (click to shop by spec/brand)
4

Assemble coin cell

30 min
Stack case/electrode/separator/Li/spring and crimp-seal.
💡 Tip Wet the separator evenly
⚠️ Caution Align separator to avoid shorting
🧪 Materials for this step (click to shop by spec/brand)
5

Cycle test

Hours–days
Run galvanostatic cycling to record capacity and Coulombic efficiency.
💡 Tip Form with a small current first
🧪 Materials for this step (click to shop by spec/brand)

⚠️ 5 Common Beginner Mistakes

  • High glovebox moisture hurts capacity
  • Cracking/delamination of the coating
  • Misaligned separator causes shorting
  • Insufficient electrolyte wets poorly
  • Incomplete drying leaves water

❓ FAQ

+Why is first-cycle efficiency low?
Irreversible Li loss during SEI formation.
+Fast capacity fade?
Check moisture, separator, and cycling range.
+Need rest before test?
Yes, rest 4–12 h to wet the separator.

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Data authenticity: Product categories from JW Supply Chain standard taxonomy; method→step→product connected. Last updated: 2026-08-23 · v3.0