Sunday, March 28, 2010

US Patent 7682750 - CNT/nanoparticle Li ion battery

A variety of approaches have been suggested to use carbon materials as anodes to achieve high efficiency lithium ion batteries. This patent from Hon-Hai Precision teaches a variation using multiwalled carbon nanotubes as the anode and Li based nanoparticles as the cathode. Claim 1 reads:

1. A lithium ion battery comprising:

an anode comprising a conductive substrate and at least one carbon nanotube array formed thereon, the carbon nanotube array comprising a plurality of multi-walled carbon nanotubes, the carbon nanotubes being substantially parallel to each other and substantially perpendicular to the substrate;

a cathode comprising a plurality of lithium-cobalt-nickel oxide nanoparticles;

an electrolyte; and

a membrane separating the anode from the cathode.