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US 2019/0103612 A1Published application
High-capacity rechargeable battery stacks containing a spalled cathode material
AssigneeInternational Business Machines Corporation
InventorsYun Seog Lee, Stephen W. Bedell, Joel P. de Souza, Devendra K. Sadana
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Abstract
High-capacity (i.e., a capacity of 50 mAh/gm or greater) and high-performance rechargeable batteries are provided that contain a rechargeable battery stack that includes a spalled material structure that includes a cathode material layer that is attached to a stressor material. The cathode material may include a single crystalline that is devoid of polymeric binders. The stressor material serves as a cathode current collector of the rechargeable battery stack.
Claims18
A rechargeable battery stack comprising:
- a cathode current collector that is composed of a metal stressor material;
- a single crystalline cathode material layer located on a physically exposed surface of the cathode current collector;
- an electrolyte located on a physically exposed surface of the single crystalline cathode material layer;
- an anode located on a physically exposed surface of the electrolyte;
- and
- an anode current collector located on a physically exposed surface of the anode.
3 more elements
A rechargeable battery stack comprising:
- a cathode current collector that is composed of a metal stressor material and having finger portions that are separated by a spalling barrier material portion;
- a single crystalline cathode material layer portion located on a physically exposed surfaces of each finger portion of the cathode current collector and each spalling barrier material portion;
- an electrolyte located on a physically exposed surface of the single crystalline cathode material layer;
- an anode located on a physically exposed surface of the electrolyte;
- and
- an anode current collector located on a physically exposed surface of the anode.
3 more elements
Dependencies are inferred from the claim text.