Patent ID: 9012075
Filing Date: 2015-04-21
Classification: H01M,Y02E,Y02T

Abstract:
1. A negative electrode for a lithium ion battery comprising a current collector having a surface and a plurality lithium-accepting nanowires, each nanowire having ends, a length and a nanometer-sized diameter, in which an end of each of the nanowires is embedded in the current collector and the nanowires extend outwardly from the current collector for infiltration with a suitable lithium-conducting electrolyte, each nanowire having a circumferential coating of a lithium diffusion-inhibiting material over a portion of its length extending from the surface of the current collector, the lithium diffusion-inhibiting coating serving to mitigate fracture-inducing stresses occurring in the lithium-accepting nanowire during lithiation and delithiation.