Cryogenic milling techniques for fabrication of nanostructured electrodes
AssigneeThe Regents of the University of California
InventorsJian Luo, Qizhang Yan
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Abstract
Disclosed are nanostructured materials, devices, systems and methods of their fabrication using cryogenic milling techniques. In some embodiments in accordance with the disclosed technology, a cryogenic milling method for fabricating electrode materials for batteries is described, which can be used to fabricate high volumetric/gravimetric capacity SnSb—C (tin-antimony with carbon) anode material and other alloy/intermetallic type carbon composite battery anode materials for lithium-ion batteries with significantly improved battery energy density and cycle life.
Claims15
A cryogenic milling method for a fabricating nanostructured composite material, the method comprising:
- providing an initial material including particles inside a chamber of a ball milling apparatus to conduct a milling process of the initial material, wherein the particles of the initial material have a size dimension of at least tens of micrometers;
- cryo-cooling an outside of the chamber of the ball milling apparatus to continually cool the initial material;
- and
- producing the nanostructured composite material by ball milling the initial material concurrent to said cryo-cooling to refine the size dimension of the particles of the initial material down to nanocrystalline size.
Dependencies are inferred from the claim text.