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Materials

Firms advance battery resins

May 8, 2006 | A version of this story appeared in Volume 84, Issue 19

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Credit: ExxonMobil Chemical photo
ExxonMobil's film finds use in batteries for small electronics such as cell phones.
Credit: ExxonMobil Chemical photo
ExxonMobil's film finds use in batteries for small electronics such as cell phones.

Two chemical companies are investing in polymers used to make lithium-ion batteries. ExxonMobil's Tonen Chemical affiliate in Japan says it has increased capacity at its Nasu plant by more than 50% to satisfy high demand in the lithi-um-ion battery separator market. Exxon's product is a thin, polyethylene-based porous film that allows lithium ions to flow between anode and cathode. Arkema, meanwhile, has introduced a high-molecular-weight polyvinylidene fluoride resin for use in binders for lithium-ion battery manufacture and other applications.

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