Title:
HIGH CAPACITY LAYERED OXIDE CATHODES WITH ENHANCED RATE CAPABILITY
Document Type and Number:
WIPO Patent Application WO/2011/109457
Kind Code:
A3
Abstract:
The present invention provides a surface modified cathode and method of making surface modified cathode with high discharge capacity and rate capability having a lithium-excess Li[M1-yLiy]O2 (M = Mn, Co, and Ni or their combinations and 0 < y ≤ 0.33) cathode surface with a surface modification comprising lithium-ion conductor, or an electronic conductor, or a mixed lithium-ion and electronic conductor to suppress the elimination of oxide ion vacancies, reduce the solid-electrolyte interfacial (SEI) layer thickness, reduce the irreversible capacity loss in the first cycle, and enhance the rate capability.
Inventors:
MANTHIRAM ARUMUGAM (US)
LIU JUN (US)
JAYAN BABY REEJA (US)
LIU JUN (US)
JAYAN BABY REEJA (US)
Application Number:
PCT/US2011/026776
Publication Date:
February 23, 2012
Filing Date:
March 02, 2011
Export Citation:
Assignee:
UNIV TEXAS (US)
MANTHIRAM ARUMUGAM (US)
LIU JUN (US)
JAYAN BABY REEJA (US)
MANTHIRAM ARUMUGAM (US)
LIU JUN (US)
JAYAN BABY REEJA (US)
International Classes:
H01M4/131; H01M4/1391; H01M4/505; H01M4/525; H01M4/62
Foreign References:
| US20050106462A1 | 2005-05-19 |
Other References:
OHTA N. ET AL.: "Enhancement of the High-Rate Capability of Solid-State Lithium Batteries by Nanoscale Interfacial Modification", ADVANCED MATERIALS, vol. 18, no. ISS.17, 30 September 2009 (2009-09-30), pages 2226 - 2229
KANG S. ET AL.: "Enhancing the Rate Capability of High Capacity xL12Mn03(1-x)LiMo2(M = Mn, Ni, Co) Electrod by Li-Ni-P04 Treatment", ELECTROCHEMISTRY COMMUNICATION, vol. 11, no. ISS.4, 30 April 2009 (2009-04-30), pages 748 - 751
WANG Y. ET AL.: "Development in Nanostructured Cathode Materials for High-Performance Lithium-Ion Batteries", ADVANCED MATERIALS, vol. 20, no. ISS.12, 18 June 2008 (2008-06-18), pages 2251 - 2269
KANG S. ET AL.: "Enhancing the Rate Capability of High Capacity xL12Mn03(1-x)LiMo2(M = Mn, Ni, Co) Electrod by Li-Ni-P04 Treatment", ELECTROCHEMISTRY COMMUNICATION, vol. 11, no. ISS.4, 30 April 2009 (2009-04-30), pages 748 - 751
WANG Y. ET AL.: "Development in Nanostructured Cathode Materials for High-Performance Lithium-Ion Batteries", ADVANCED MATERIALS, vol. 20, no. ISS.12, 18 June 2008 (2008-06-18), pages 2251 - 2269
Attorney, Agent or Firm:
MEYERTONS, Eric, B. (Hood Kivlin, Kowert , Goetzel, P.C.,P.O. Box 39, Austin TX, US)
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