US Patent 8017430 - Nanostructured silicon anode

http://www.freepatentsonline.com/8017430.html

This patent from Nexeon Ltd. teaches a way to fabricate nanostructured silicon anodes for lithium ion batteries which provides extended cycle life and significantly increases battery capacity. Claim 1 reads:

1. A method of fabricating an energy storage device comprising the steps of:

forming an anode comprising an array of spaced elongated structures extending from a substrate, wherein the elongated structures comprise silicon;

forming a cathode; and

arranging the anode and cathode in communication to form a battery.