Patent ID: 9601228
Date: 2017-03-21
CPC Classifications: H01B,H01M,Y02E

Claim:
1. A lithium ion battery comprising a positive electrode comprising a lithium metal oxide, a negative electrode, a separator between the positive electrode and the negative electrode, an electrolyte, and extractable supplemental lithium wherein the negative electrode comprises particulate silicon oxide based active material, from about 1 to about 15 weight percent distinct electrically conductive particulates and a polymer binder binding the particulate silicon oxide based active material and the electrically conductive particulate, wherein the negative electrode capacity is from about 115 percent to about 180 percent of the positive electrode capacity and having a first cycle irreversible capacity loss of no more than about 20% of the initial charge capacity for a charge to 4.6V and a discharge to 2V.