Composite silicon or composite tin particles

摘要

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.

主权项

1. A particle of a composite composition for use in an electrochemical cell comprising:
a general 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; 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.