Battery stack unit
AssigneeQuantumScape Battery, Inc.
InventorsCheng-Chieh CHAO, Sriram IYER, Mohit SINGH, Martin WINTERKORN, Timothy HOLME
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Abstract
Provided herein are embodiments related to a bilayer stack comprising a positive electrode current collector (PECC); a first negative electrode current collector (NECC) and a second NECC; a first metal layer and a second metal layer; a first cathode and a second cathode on opposite sides of, and in contact with, the PECC. Provided herein are also batteries which include two or more bilayer stacks. The bilayer stack further comprises a first solid-state electrolyte between the first metal layer and the first cathode; and a second solid-state electrolyte adjacent to the second cathode.
Claims28
A bilayer stack comprising:
- a first negative electrode current collector (NECC);
- a first metal layer;
- a first solid-state electrolyte;
- a first cathode;
- a positive electrode current collector (PECC);
- a second cathode;
- a second solid-state electrolyte;
- a second metal layer;
- and a second NECC;
- wherein the first cathode and the second cathode are on opposite sides of, and in contact with, the PECC;
- wherein the first NECC is adjacent to the first metal layer;
- and
- wherein the second NECC is adjacent to the second metal layer.
A bilayer stack comprising:
- a first negative electrode current collector (NECC);
- a first negative electrode seal;
- a first metal layer;
- a first solid-state electrolyte;
- a first cathode;
- a positive electrode current collector (PECC);
- a second cathode;
- a second solid-state electrolyte;
- a second metal layer;
- a second negative electrode seal;
- and a second NECC;
- wherein the first cathode and the second cathode are on opposite sides of, and in contact with, the PECC;
- wherein the first NECC is adjacent to the first metal layer;
- and
- wherein the second NECC is adjacent to the second metal layer.
A bilayer stack comprising:
- a first negative electrode current collector (NECC);
- a first negative electrode seal;
- a first metal layer;
- a first solid-state electrolyte;
- a first bonding layer;
- a first cathode;
- a positive electrode current collector (PECC);
- a second cathode;
- a second bonding layer;
- a second solid-state electrolyte;
- a second metal layer;
- a second negative electrode seal;
- and a second NECC;
- wherein the first cathode and the second cathode are on opposite sides, and in contact with, of the PECC;
- wherein the first NECC is adjacent to the first metal layer;
- and
- wherein the second NECC is adjacent to the second metal layer.
The bilayer stack of any one of claims 15-23, wherein the first solid-state electrolyte has a thickness less than 100 μm and greater than 10 nm;
- and wherein the second solid-state electrolyte has a thickness less than 100 μm and greater than 10 nm.
Dependencies are inferred from the claim text.