Volume 92 Issue 42 | p. 29 | Concentrates
Issue Date: October 20, 2014

Electrode Separator Doubles As A Battery Safety Sensor

Thin metal film sandwiched between polymer layers sends early warning of battery failure
Department: Science & Technology | Collection: Safety
News Channels: Materials SCENE
Keywords: lithium-ion battery, lithium-ion battery, battery safety, separator

A new design of an insulating material that separates the electrodes in lithium-ion batteries may help prevent a rare but potentially disastrous scenario that can cause these batteries to suddenly go up in flames. A small number of burning-battery incidents, including two last year involving Boeing 787 Dreamliner airplanes, have kept lithium-ion batteries in the safety spotlight. Under circumstances that are not thoroughly understood, charging a battery sometimes drives lithium metal to accumulate on one . . .

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