US Patent 7683359 - Nanosilicon/Lithium battery

http://www.freepatentsonline.com/7683359.html

This patent covers a variation of lithium ion batteries developed by Nexeon Ltd. using nanostructured silicon as the anode. Claim 1 reads:

1. An energy storage device comprising:

an anode comprising an array of sub-micron structures comprising silicon, on a substrate;

a cathode comprising lithium; and

a lithium-based electrolyte, arranged to form a battery.