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US 10,651,444 B2Granted
Lithium batteries utilizing nanoporous separator layers
AssigneeOptodot Corporation
InventorSteven A. Carlson
Life of this patent
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Abstract
Provided are methods of preparing lithium batteries comprising a separator/electrode assembly having one or more current collector layers interposed between first and second electrode layers of the same polarity, wherein the first electrode layer is coated or laminated overlying a separator layer and the separator/electrode assembly is interleaved with an electrode comprising a current collector layer interposed between two electrode layers of opposite polarity to said first and second electrodes.
Claims18
A method of making a lithium battery, the method comprising the steps of:
- (a) coating a porous separator layer on a substrate;
- (b) coating a first electrode layer of a polarity directly on a first portion of said porous separator layer;
- (c) coating a second electrode layer of the same polarity directly on a second portion of said porous separator layer;
- (d) coating one or more current collector layers directly on said first electrode layer to make a separator/electrode stack;
- (e) laminating said second electrode layer to said one or more current collector layers on a side opposite to said first electrode layer to form a multilayer structure that comprises the first and second electrode layers and the one or more current collector layers interposed between the first and second portions of the porous separator layer and respective portions of the substrate:
- (f) delaminating said substrate from said porous separator layer to form a separator/electrode assembly having said one or more current collector layers interposed between said first and second electrode layers;
- and
- (g) interleaving said separator/electrode assembly with an electrode assembly comprising a current collector layer interposed between two electrode layers of an opposite polarity to said first and second electrode layers of steps (b) and (c) to form a dry cell.
5 more elements
Dependencies are inferred from the claim text.