Amount of PVDF Used in a Lithium-ion "laptop" Battery

PVDF is polymer and acts as a binder that is mixed with the lithium storing active material and electron conducting carbon so that the mixture maintains good contact with all the components in a lithium-ion battery. Because of the the earthquake/tsunami in Japan, a major producer of PVDF (Kureha Corp with ~70% of production) is struggling and this has already begun to affect the battery supply for some Apple products.

This is a rough calculation of the amount of PVDF binder used in a lithium-ion "laptop" battery (ie. 18650 cell).

For a 2.4Ah battery with a cathode capacity of 180mAh/g and an anode capacity of 300mAh/g:

Amount of active cathode material = 2400mAh/180mAh/g = 13.9g
wt% of active material in cathode = 96%
wt% of PVDF in cathode = 2%
Amount of PVDF in cathode = 0.28g

Amount of active anode material = 2400mAh/300mAh/g = 8.9g
wt% of active material in anode= 90%
wt% of PVDF in anode = 5%
Amount of PVDF in anode = 0.44g

So, total amount of PVDF in 2400mAh battery = 0.72 g PVDF or 0.3 g PVDF/Ah.
For the Tesla Roadster which uses ~6831 18650 cells, that comes to 4.9kg per battery pack.