CORE-SHELL TYPE ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, METHOD FOR PREPARING THE SAME AND LITHIUM SECONDARY BATTERIES CONTAINING THE SAME

摘要

The invention pertains to a core-shell type anode active material for lithium secondary batteries, comprising: a core made of a silicon-containing electroactive material; and a metallic shell formed outside the core, wherein the metallic shell is composed of at least one metallic compound comprising at least one metal [compound (M)]. The invention further discloses a method for manufacturing said core-shell type anode active material, which uses electroless plating. Additionally, the invention also relates to a process for manufacturing an anode structure using the core-shell type anode active material, and to an electrochemical device comprising said anode structure.

主权项

1. An anode-forming composition (A) comprising:
particles of at least one core-shell type anode active material for lithium secondary batteries, said core-shell type anode active material comprising:
a core made of a silicon-containing electroactive material; anda metallic shell formed outside the core, wherein the metallic shell is composed of at least one metallic compound comprising at least one metal [compound (M)]; and at least one chemical additive selected from the group consisting of polyelectrolytes.