US 7,311,999 B2 · Anode for a battery and a battery using an anode

Abstract

An anode and a battery using same as provided. The battery has a winding electrode body wherein a cathode and an anode are layered and wound with a separator and an electrolyte layer, which hold an electrolyte solution in a holding body therebetween. The anode has an anode collector, an anode active material layer, and a layer including silicon oxide. The anode active material layer includes Si or alloy thereof, is formed by a vapor-phase method, a liquid phase method a sinter method, or the like, and is alloyed with the anode collector on at least a portion of interface between the anode active material layer and the anode collector. The layer includes a silicon oxide that includes silicon dioxide, and has a thickness of about 50 nm or more. Reaction between the anode active material layer and the electrolyte solution at high temperatures is inhibited by the layer including silicon oxide.

Claims13

Dependent claims

An anode, comprising:

an anode collector;
a first layer including anode active material which is provided on the anode collector, and which is alloyed with the anode collector on at least a portion of interface between the first layer and the anode collector, wherein the anode active material includes at least one type of compounds of silicon;
and
a second layer including silicon oxide having a thickness of about 50 nm to about 300 nm wherein the second layer is provided on the first layer.

1 more element

Dependencies are inferred from the claim text.

Anode for a battery and a battery using an anode

Life of this patent

Anode for a battery and a battery using an anode

Life of this patent

Abstract

Claims13