Advanced Energy Materials

Cover image for Vol. 8 Issue 5

2_05/2012Lithium Ion Batteries: Autonomic Shutdown of Lithium-Ion Batteries Using Thermoresponsive Microspheres (Adv. Energy Mater. 5/2012)

Poly(ethylene) microspheres are prepared by S. R. White and co-workers via a solvent evaporation technique and used to demonstrate autonomic shutdown of a Lithiumion battery operating unsafely. These ca. 4 μm diameter microspheres can be coated directly onto an electrode surface, as shown on page 583. When the internal battery environment reaches a critical temperature (110 °C), the microspheres melt and form a conformal coating on the electrode surface, effectively halting Li-ion transport and permanently shutting down the battery cell.

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