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Low energy milling method, low crystallinity alloy, and negative electrode composition

United States Patent

October 16, 2012
View the Complete Patent at the US Patent & Trademark Office
A method of making nanostructured alloy particles includes milling a millbase in a pebble mill containing milling media. The millbase comprises: (i) silicon, and (ii) at least one of carbon or a transition metal, and wherein the nanostructured alloy particles are substantially free of crystalline domains greater than 50 nanometers in size. A method of making a negative electrode composition for a lithium ion battery including the nanostructured alloy particles is also disclosed.
Le; Dinh B. (St. Paul, MN), Obrovac; Mark N. (St. Paul, MN), Kube; Robert Y. (Apple Valley, MN), Landucci; James R. (St. Paul, MN)
3M Innovative Properties Company (St. Paul, MN)
12/ 465,852
May 14, 2009
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under contract number DE-EE0000650 awarded by the Department of Energy. The Government has certain rights in this invention.