Anode for a battery and a battery using an anode
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.
1. 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.
2. An anode, comprising:
an anode collector;
a first layer including anode active material which is formed on the anode collector by at least one method selected from the group consisting of a vapor-phase method, a liquid phase method, and a sinter method, 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.
3. The anode according to claim 2 , wherein the first layer is alloyed with the anode collector on at least a portion of interface between the anode active material layer and the anode collector.
4. The anode according to claim 2 , wherein the first layer includes at least one type of a simple substance and compounds of silicon (Si).
5. The anode according to claim 2 , wherein the second layer including silicon oxide includes silicon dioxide.
6. A battery, comprising a cathode, an anode, and an electrolyte; wherein
the anode comprises 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 which is provided on the first layer.
7. A battery, comprising a cathode, an anode, and an electrolyte; wherein
the anode comprises an anode collector, a first layer including anode active material which is formed on the anode collector by at least one method selected from the group consisting of a vapor-phase method, a liquid phase method, and a sinter method, 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.
8. The battery according to claim 7 , wherein the first layer is alloyed with the anode collector on at least portion of interface between the first and the anode collector.
9. The battery according to claim 7 , wherein the first layer includes at least one type of a simple substance and compounds of silicon (Si).
10. The battery according to claim 7 , wherein the second layer including silicon oxide includes silicon dioxide.
11. The battery according to claim 7 , wherein the electrolyte includes a holding body, a solvent, and an electrolytic salt.
12. The battery according to claim 7 , further comprising one or more film exterior members that house the cathode, the anode, and the electrolyte.
13. The battery according to claim 7 , wherein the cathode contains a metal complex oxide including lithium.