Solid-state lithium batteries incorporating glass fibers
A solid-state battery cell includes a cathode comprising a cathode glass fiber scaffold impregnated with cathode active material, an anode comprising an anode glass fiber scaffold impregnated with lithium metal or a lithium metal alloy, and a first electrolyte layer comprising an electrolyte glass fiber scaffold impregnated with a first solid-state electrolyte, the electrolyte layer positioned between the cathode and the anode and the electrolyte glass fiber scaffold extending throughout the first electrolyte layer.
1. A solid-state battery cell, comprising:
a cathode comprising a cathode glass fiber scaffold impregnated with cathode active material;
an anode comprising an anode glass fiber scaffold impregnated with lithium metal or a lithium metal alloy; and
a first electrolyte layer comprising an electrolyte glass fiber scaffold impregnated with a first solid-state electrolyte, the electrolyte layer positioned between the cathode and the anode and the electrolyte glass fiber scaffold extending throughout the first electrolyte layer, wherein one or both of the cathode glass fiber scaffold and the anode glass fiber scaffold is formed from individual columns of glass fiber extending in a thickness direction of the battery cell, the individual columns impregnated with a respective active material and space between individual columns filled with the respective active material.
2. The solid-state battery cell of claim 1 , wherein the individual columns of glass fiber extend through at least a majority of a thickness of the cathode.
3. The solid-state battery cell of claim 1 , wherein the individual columns of glass fiber extend through at least a majority of a thickness of the anode.
4. The solid-state battery cell of claim 1 , wherein the cathode active material is a nickel-manganese-cobalt based composite material.
5. The solid-state battery cell of claim 1 , wherein the electrolyte glass fiber scaffold, the cathode glass fiber scaffold and the anode glass fiber scaffold each has a porosity of between 50% and 70%.
6. The solid-state battery cell of claim 1 , further comprising:
a second electrolyte layer formed between the first electrolyte layer and the anode, the second electrolyte layer consisting of a second solid-state electrolyte.
7. The solid-state battery cell of claim 6 , wherein the second solid-state electrolyte is different from the first solid-state electrolyte.
8. The solid-state battery cell of claim 6 , wherein the second electrolyte layer has an alternating step pattern having areas of a first thickness alternating with areas of a second thickness, the first thickness being less than the second thickness.
9. The solid-state battery cell of claim 8 , wherein the anode glass fiber scaffold is formed from individual columns of glass fiber extending in a thickness direction of the anode, the individual columns impregnated with lithium metal or the lithium metal alloy and space between individual columns filled with the lithium metal or the lithium metal alloy, and
the areas of the second thickness are aligned with the individual columns of glass fiber.
10. The solid-state battery cell of claim 6 , further comprising:
a third electrolyte layer formed between the first electrolyte layer and the cathode, the third electrolyte layer consisting of the second solid-state electrolyte.
11. A solid-state battery cell, comprising:
a cathode comprising a cathode glass fiber scaffold is formed from individual columns of glass fiber extending in a thickness direction of the cathode, the individual columns impregnated with cathode active material and space between individual columns filled with the cathode active material;
an anode comprising an anode glass fiber scaffold formed from individual columns of glass fiber extending in a thickness direction of the anode, the individual columns impregnated with lithium metal or a lithium metal alloy and space between individual columns filled with the lithium metal or the lithium metal alloy; and
a first electrolyte layer comprising an electrolyte glass fiber scaffold impregnated with a first solid-state electrolyte, the electrolyte layer positioned between the cathode and the anode and the electrolyte glass fiber scaffold extending throughout the first electrolyte layer.
12. The solid-state battery cell of claim 11 , further comprising:
a second electrolyte layer formed between the first electrolyte layer and the anode, the second electrolyte layer consisting of a second solid-state electrolyte.
13. The solid-state battery cell of claim 12 , wherein the second solid-state electrolyte is different from the first solid-state electrolyte.
14. The solid-state battery cell of claim 12 , wherein the second electrolyte layer has an alternating step pattern having areas of a first thickness alternating with areas of a second thickness, the first thickness being less than the second thickness, and
the areas of the second thickness are aligned with the individual columns of glass fiber of the anode and the individual columns of glass fiber of the cathode.
15. A solid-state battery cell, comprising:
a cathode comprising a cathode glass fiber scaffold impregnated with cathode active material;
an anode comprising an anode glass fiber scaffold impregnated with lithium metal or a lithium metal alloy, wherein one or both of the cathode glass fiber scaffold and the anode glass fiber scaffold is formed from individual columns of glass fiber extending in a thickness direction of the battery cell, the individual columns impregnated with a respective active material and space between individual columns filled with the respective active material;
a first electrolyte layer comprising an electrolyte glass fiber scaffold impregnated with a first solid-state electrolyte, the electrolyte layer positioned between the cathode and the anode and the electrolyte glass fiber scaffold extending throughout the first electrolyte layer;
a second electrolyte layer formed between the first electrolyte layer and the anode, the second electrolyte layer consisting of a second solid-state electrolyte; and
a third electrolyte layer formed between the first electrolyte layer and the cathode, the third electrolyte layer consisting of the second solid-state electrolyte.
16. The solid-state battery cell of claim 15 , wherein the first solid-state electrolyte is different from the second solid-state electrolyte.
17. The solid-state battery cell of claim 15 , wherein the cathode active material is a nickel-manganese-cobalt based composite material.
18. The solid-state battery cell of claim 15 , wherein the electrolyte glass fiber scaffold, the cathode glass fiber scaffold and the anode glass fiber scaffold each has a porosity of between 50% and 70%.