Patent Number: 7,820,327

Title: Lithium titanate and lithium cells and batteries including the same

Abstract: An active material suitable for use in lithium cells comprises lithium titanate having a surface and a material disposed on the surface is provided. The material is non-reactive with an electrolyte within a range of potential vs. lithium of from 0 V to 4 V. A variety of lithium cells including lithium titanate are also provided. The lithium titanate is typically of the general formula: Li.sub.4Ti.sub.5O.sub.12-x, wherein x is greater than 0. Further, a cell module is provided. The cell module comprises a plurality of lithium cells each having a soft outer packaging and assembled in an environment where water content in the environment is controlled.

Inventors: Yumoto; Hiroyuki (Fishers, IN), Tan; Taison (Fishers, IN), Buck; Derrick (Pendleton, IN)

Assignee: EnerDel, Inc.

International Classification: H01M 4/58 (20100101)

Expiration Date: 2018-10-26 0:00:00