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AssigneeZenlabs Energy, Inc.
InventorsShabab Amiruddin, Subramanian Venkatachalam, Bing Li, Herman A. Lopez, Sujeet Kumar
Estimating the term…
Supplemental lithium can be used to stabilize lithium ion batteries with lithium rich metal oxides as the positive electrode active material. Dramatic improvements in the specific capacity at long cycling have been obtained. The supplemental lithium can be provided with the negative electrode, or alternatively as a sacrificial material that is subsequently driven into the negative electrode active material. The supplemental lithium can be provided to the negative electrode active material prior to assembly of the battery using electrochemical deposition. The positive electrode active materials can comprise a layered-layered structure comprising manganese as well as nickel and/or cobalt.
A lithium ion battery comprising supplemental lithium, a positive electrode, a negative electrode, a separator between the positive electrode and the negative electrode and an electrolyte comprising lithium ions, the negative electrode comprising a lithium intercalation/alloying composition wherein the supplemental lithium comprises elemental lithium and wherein at least some of the supplemental lithium is initially provided as a source layer on the negative electrode.
A method for the formation of a negative electrode for a lithium ion battery wherein the negative electrode comprises an active lithium intercalation/alloying composition, supplemental lithium and a polymer binder, the method comprising associating a source layer of supplemental lithium with the negative electrode.
Dependencies are inferred from the claim text.