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US 8,465,871 B2Granted
Electrochemical cells with tabs
AssigneeLeyden Energy, Inc.
InventorsMarc Juzkow, Aakar Patel, Jun Lui, Konstantin Tikhonov, Michael Erickson, Hashmat Haidari, Thomas Nagy, Hongli Dai
Life of this patent
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Abstract
The present invention provides electrochemical cells and batteries having one or more electrically conductive tabs and carbon sheet current collectors, where the tabs are connected to the carbon sheet current collectors; and methods of connecting the tabs to the carbon based current collectors. In one embodiment, the electrically conductive tabs are metallic tabs.
Claims29
An electrochemical cell, said electrochemical cell comprising:
- a positive electrode comprising a positive electrode material and a positive electrode current collector, wherein the positive electrode material is in electronically conductive contact with the positive electrode current collector, and wherein the positive electrode current collector comprises a conductive non-metal substrate;
- a negative electrode comprising a negative electrode material and a negative electrode current collector, wherein the negative electrode material is in electronically conductive contact with the negative electrode current collector;
- an electronically insulative and ion conductive medium in ionically conductive contact with said positive electrode and said negative electrode, wherein said ionic conductive medium comprises an ion conductive layer and a corrosive electrolyte solution;
- at least one positive electrode tab having a first attachment end and a second attachment end, wherein said at least one positive electrode tab is metallic;
- wherein said at least one positive electrode tab is not in contact with said corrosive electrolyte;
- and wherein the first attachment end of said at least one positive electrode tab is connected to said conductive non-metal substrate by means of at least one rivet or staking;
- at least one negative electrode tab having a first attachment end and a second attachment end, wherein said first attachment end of said at least one negative electrode tab is connected to said negative electrode current collector.
4 more elements
Dependencies are inferred from the claim text.