US 7,459,233 B2 · Anode and battery

Abstract

The invention provides an anode capable of relaxing stress due to expansion and shrinkage of an anode active material layer associated with charge and discharge, or an anode capable of reducing structural destruction of the anode active material layer and reactivity between the anode active material layer and an electrolyte associated with charge and discharge, and a battery using it. The anode active material layer contains an element capable of forming an alloy with Li, for example, at least one from the group consisting of simple substances, alloys, and compounds of Si or Ge. An interlayer containing a material having superelasticity or shape-memory effect is provided between an anode current collector and the anode active material layer. Otherwise, the anode current collector is made of the material having superelasticity or shape-memory effect. Otherwise, a thin film layer containing the material having superelasticity or shape-memory effect is formed on the anode active material layer.

Claims16

Dependent claims

An anode, comprising:

an anode current collector;
an anode active material layer;
and
an interlayer provided between the anode current collector and anode active material layer,
wherein,
the interlayer contains a material having superelasticity or shape-memory effect, and
a metal layer is provided between the interlayer and the anode active material layer to minimize alloying therebetween.

4 more elements

Dependencies are inferred from the claim text.

Anode and battery

Life of this patent

Anode and battery

Life of this patent

Abstract

Claims16