Flat silicon anode used on copper conductor of lithium ion battery

Abstract

The invention relates to a silicon electrode suitable for use as an anode of a lithium ion battery, comprising a current collector, preferably made of copper, an adhesive layer disposed on the current collector, and a multi-layer stack structure disposed on the adhesive layer. The purpose of the present invention is to provide a silicon electrode which does not crush when lithium is incorporated, thereby not losing electrical contact with a current collector, and which has a stable surface and high intrinsic conductivity. The object is achieved in that a multi-layer group structure as an active layer of a silicon electrode is formed from at least one layer of metal and silicon or from a mixed system of silicon and at least one metal, the multi-layer group structure being subjected to rapid tempering and forming an electrically conductive metal silicide matrix, wherein the metal silicide substrate comprises an amorphous region and a nanocrystalline region of silicon.

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