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US 9,793,541 B2Granted
Composite silicon or composite tin particles
OwnerShailesh Upretiinventor
Life of this patent
Estimating the term…
Abstract
The specification relates to a composite particle for storing lithium. The composite particle is used in an electrochemical cell. The composite particle includes a metal oxide on the surface of the composite particle, a major dimension that is approximately less than or equal to 40 microns and a formula of MM′Z, wherein M is from the group of Si and Sn, M′ is from a group of Mn, Mg, Al, Mo, Bronze, Be, Ti, Cu, Ce, Li, Fe, Ni, Zn, Co, Zr, K, and Na, and Z is from the group of O, Cl, P, C, S, H, and F.
Claims8
A particle of a composite composition for use in an electrochemical cell comprising:
- a general formula of MM′Z.C, wherein M is from the group of Si and Sn, M′ is from a group of Mn, Mg, Al, Mo, Bronze, Be, Ti, Cu, Ce, Li, Fe, Ni, Zn, Co, Zr, K, and Na, Z is from the group of O, Cl, P, C, S, H, and F and C is Carbon;
- and a surface composition being an oxide, the surface composition being textured, and wherein a major dimension of the particle is less than 100 microns, and wherein at least 2% by weight of M′ is doped into a crystal structure of M, and wherein M is arranged in an array of columns joined by crystallographic alignments with separation between the columns.
Dependencies are inferred from the claim text.