engine - 9:14 am on Jul 11, 2012 (gmt 0)
It seems it's not such a crazy idea.
T-Shirt Phone Charger [bbc.co.uk]
They used a T-shirt bought from a local discount store, which was soaked in a solution of fluoride, dried and then baked in an oxygen-free environment at high temperature.
The fibres in the fabric converted from cellulose to activated carbon during the process, but the material remained flexible.
By using small parts of the fabric as an electrode, the researchers showed that the material could be made to act as a capacitor.