Massachusetts Institute of Technology

Alexander Urban

Gerbrand Ceder

Geoffroy Hautier

Jinhyuk Lee

Xin Li

Sangtae Kim

This disclosure provides a positive electrode active lithium-excess metal oxide with composition LiMO(0.6&#x2264;y&#x2264;0.85 and 0&#x2264;x+y&#x2264;2) for a lithium secondary battery with a high reversible capacity that is insensitive with respect to cation-disorder. The material exhibits a high capacity without the requirement of overcharge during the first cycles.

High-capacity positive electrode active material

This disclosure provides a positive electrode active lithium-excess metal oxide with composition LiMO(0.6&#x2266;y&#x2266;0.85 and 0&#x2266;x+y&#x2266;2) for a lithium secondary battery with a high reversible capacity that is insensitive with respect to cation-disorder. The material exhibits a high capacity without the requirement of overcharge during the first cycles.

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Somerville, MA, United States of America

Alexander Urban