Inventors:
Arumugam Manthiram - Austin TX, US
Yan Wu - Austin TX, US
Assignee:
Board of Regents, The University of Texas Systems - Austin TX
International Classification:
H01M 4/58, H01M 4/62, H01M 4/00, H01M 4/50, H01M 4/66, C01D 7/00, C01D 1/02
US Classification:
42923195, 4292313, 4292316, 429232, 429217, 4292181, 429245, 429224, 429223, 4292315, 4292319, 423421, 4235944, 4235946
Abstract:
The present invention includes compositions, surface and bulk modifications, and methods of making of (1−x)Li[LiMn]O. xLi[MnNiCo]Ocathode materials having an O3 crystal structure with a x value between 0 and 1 and y value between 0 and 0. 5, reducing the irreversible capacity loss in the first cycle by surface modification with oxides and bulk modification with cationic and anionic substitutions, and increasing the reversible capacity to close to the theoretical value of insertion/extraction of one lithium per transition metal ion (250-300 mAh/g).