Inserted cavity electrode lithium battery
View Patent ↗A battery with many cavities that form tiny reaction zones having voids. During charging, lithium metal forms in each cavity on the anode current collector. The formation of lithium metal in each of the many thousands of small cavities that are isolated from each other prevents the buildup of significant quantities of lithium metal in one location. The combination of tiny reaction zones and voids allows lithium metal to form without stressing the structure of the battery cell.
1. A battery comprising:
a deformed sheet of electrically non-conductive polymer base material;
said deformed sheet having cavities, each with a bottom;
an anode current collector layer directly on said deformed sheet;
a layer of anode liquid electrolyte directly on said anode current collector layer;
a layer of solid electrolyte on said layer of anode liquid electrolyte with a void at the bottom of said cavities between the solid electrolyte and the current collector;
a cathode active mass layer; and
a cathode current collector.
2. The battery of claim 1 further comprising:
some of said cavities are punctured.
3. The battery of claim 1 further comprising:
each said cavity having a lip;
a layer of electrically insulating material on said anode current collector at the said lip of each said cavity.
4. The battery of claim 1 further comprising:
a layer of cathode liquid electrolyte between said solid electrolyte and said cathode active mass.
5. The battery of claim 1 further comprising:
a top electrically non-conductive polymer layer.
6. The battery of claim 5 further comprising:
a heat conducting liquid between said cathode current collector and said top non-conductive polymer layer.