Recessed tab for higher energy density and thinner batteries
First Claim
1. An electrode assembly for a battery, the electrode assembly comprising:
- an active material layer comprising an electrolyte polymer which is mechanically self-stabilizing at ambient temperatures, the active material layer having a recess formed therein at an outer surface of the active material layer, the recess extending from a side facet of the active material layer toward an interior portion of the active material layer, the side facet oriented transversely to the outer surface, the recess comprising a floor portion generally opposing the outer surface, an end wall generally opposing the side facet and adjoining the floor portion to the outer surface of the active material, and spaced apart side walls extending between the end wall and the side facet and adjoining the floor portion to the outer surface of the active material;
a current collector layer supported on and in electrical contact with the outer surface of the active material layer, the current collector layer having a recess complementary to the recess formed in the active layer; and
a tab element secured at least partially within the recess formed in the active material and attached to the current collector layer, the tab element in electrical contact with at least one of the active material layer and the current collector layer, the tab element providing an electrical connection for the electrode assembly;
wherein a portion of the tab element is within the recess of the current collector.
4 Assignments
0 Petitions
Accused Products
Abstract
Various embodiments are described herein for an electrode assembly for a battery and a method of making the electrode assembly. The electrode assembly comprises an active material layer having a recess formed therein at an outer surface of the active material layer, the recess extending from a side facet of the active material layer toward an interior portion of the active material layer; a current collector layer supported on and in electrical contact with the outer surface of the active material layer; and a tab element supported partially within the recess and in electrical contact with at least one of the active material layer and the current collector layer, the tab element being adapted to provide an electrical connection for the electrode assembly.
105 Citations
15 Claims
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1. An electrode assembly for a battery, the electrode assembly comprising:
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an active material layer comprising an electrolyte polymer which is mechanically self-stabilizing at ambient temperatures, the active material layer having a recess formed therein at an outer surface of the active material layer, the recess extending from a side facet of the active material layer toward an interior portion of the active material layer, the side facet oriented transversely to the outer surface, the recess comprising a floor portion generally opposing the outer surface, an end wall generally opposing the side facet and adjoining the floor portion to the outer surface of the active material, and spaced apart side walls extending between the end wall and the side facet and adjoining the floor portion to the outer surface of the active material; a current collector layer supported on and in electrical contact with the outer surface of the active material layer, the current collector layer having a recess complementary to the recess formed in the active layer; and a tab element secured at least partially within the recess formed in the active material and attached to the current collector layer, the tab element in electrical contact with at least one of the active material layer and the current collector layer, the tab element providing an electrical connection for the electrode assembly; wherein a portion of the tab element is within the recess of the current collector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification