How a Fraction of a Battery Can Cripple iPod Production

Gigaom: This week, the Wall Street Journal reported on a possible delay in iPod production because of the shuttering of a polymer manufacturing facility, owned by Kureha Corp., near the Japanese earthquake’s epicenter. As the WSJ reported, the polymer in question is called polyvinylidene fluoride, or PVDF. PVDF is used as a binder in lithium-ion (Li-ion) batteries. The WSJ says Kureha owns 70 percent of the PVDF market. (This surprised me, but I trust the WSJ.)

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