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

Patent ·
OSTI ID:1079460

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.

Research Organization:
3M Innovative Properties Company
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0000650
Assignee:
3M Innovative Properties Company (St. Paul, MN)
Patent Number(s):
8,287,772
Application Number:
12/465,852
OSTI ID:
1079460
Country of Publication:
United States
Language:
English

References (4)

An electrochemical investigation of a Sn–Co–C ternary alloy as a negative electrode in Li-ion batteries journal September 2007
The effect of milling condition on the formation of nanostructures: Synthesis of vanadium carbides journal January 1992
Different Pathways of Phase Transition in a V–Si System Driven by Mechanical Alloying journal April 1998
Ternary Sn–Co–C Li-ion battery electrode material prepared by high energy ball milling journal August 2007