Search International and National Patent Collections

1. (WO2011156419) LITHIUM ION BATTERIES BASED ON NANOPOROUS SILICON

Pub. No.:    WO/2011/156419    International Application No.:    PCT/US2011/039513
Publication Date: Dec 15, 2011 International Filing Date: Jun 7, 2011
IPC: H01M 10/0525
H01M 4/38
H01M 4/48
B82B 3/00
H01M 4/62
Applicants: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
TOLBERT, Sarah H.
NEMANICK, Eric Joseph
KANG, Chris Byung-Hwa
Inventors: TOLBERT, Sarah H.
NEMANICK, Eric Joseph
KANG, Chris Byung-Hwa
Title: LITHIUM ION BATTERIES BASED ON NANOPOROUS SILICON
Abstract:
A lithium ion battery that incorporates an anode formed from a Group IV semiconductor material such as porous silicon is disclosed. The battery includes a cathode, and an anode comprising porous silicon. In some embodiments, the anode is present in the form of a nanowire, a film, or a powder, the porous silicon having a pore diameters within the range between 2 nm and 100 nm and an average wall thickness of within the range between 1 nm and 100 nm. The lithium ion battery further includes, in some embodiments, a non-aqueous lithium containing electrolyte. Lithium ion batteries incorporating a porous silicon anode demonstrate have high, stable lithium alloying capacity over many cycles.