Live Proof: Functioning After Nail Penetration
Watch SafeCoat-applied cells continue operating after the nail penetrates.
5 Amp-hour (Ah) SafeCoat Cell Test
Nail penetration testing was performed in an accelerated rate calorimeter using the SAE J2464 protocol. Identical nails were driven into both a SafeCoat-applied 5 Ah (41-layer) cell and a benchmark 5 Ah cell with a thermally-enhanced ceramic-coated PE separator, each using standard flammable carbonate electrolytes.
- Proven Fire Prevention: 5 Ah test cell with 20 µm SafeCoat separator endures 1-hour nail-penetration test at 100% SOC without thermal runaway or sudden discharge
- Maintains Function After Nail Penetration: Nail short gradually discharges the cell from 4.16 V to 3.68 V over 1 hour without sharp voltage drop
- Performance Scales to Thinner Layers: Even thinner SafeCoat layers maintain safety and functionality, enabling higher energy density. (video above)
Unmatched Safety
SafeCoat Cell demonstrates outstanding thermal stability and prevents fire, mass loss and runaway heating. The cell remains effectively functional, apart from the short pathway provided by the nail.
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