Configuring anisotropic expansion of silicon-dominant anodes using particle size

Abstract

Systems and methods for configuring anisotropic expansion of silicon-dominant anodes using particle size may include a cathode, an electrolyte, and an anode, where the anode may include a current collector and an active material on the current collector. An expansion of the anode during operation may be configured by utilizing a predetermined particle size distribution of silicon particles in the active material. The expansion of the anode may be greater for smaller particle size distributions, which may range from 1 to 10 μm. The expansion of the anode may be smaller for a rougher surface active material, which may be configured by utilizing larger particle size distributions that may range from 5 to 25 μm. The expansion may be configured to be more anisotropic using more rigid materials for the current collector, where a more rigid current collector may comprise nickel and a less rigid current collector may comprise copper.

What is claimed is: 
     
         1 . A battery, the battery comprising:
 a cathode, an electrolyte, and an anode, the anode comprising:   a current collector; and   an active material on the current collector, wherein an expansion of the anode during operation is adaptively configured.