Patent ID: 8785046

Claim:
A lithium-ion battery comprising: a positive electrode comprising a primary active material and an auxiliary active material; and a negative electrode comprising a negative active material; wherein the auxiliary active material comprises a lithiated form of a material that does not include electrochemically cyclable lithium in the as-provided state; and wherein the auxiliary active material is configured to provide a zero voltage crossing potential for the battery that is below a corrosion potential of a current collector of the negative electrode and above a decomposition potential of the primary active material, the auxiliary active material provided in an amount greater than or equal to a difference between an irreversible capacity of the primary active material and an irreversible capacity of the negative active material; wherein the lithiated material that does not include electrochemically cyclable lithium in the as-provided state comprises an oxide of vanadium; and wherein the negative active material comprises at least one material from the group consisting of carbon and lithium titanate.