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Title: Surface and bulk modified high capacity layered oxide cathodes with low irreversible capacity loss

Patent ·
OSTI ID:1014487
 [1];  [1]
  1. Austin, TX
+ Show Author Affiliations

The present invention includes compositions, surface and bulk modifications, and methods of making of (1-x)Li[Li.sub.1/3Mn.sub.2/3]O.sub.2.xLi[Mn.sub.0.5-yNi.sub.0.5-yCo.sub.2- y]O.sub.2 cathode 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).

Research Organization:
Board of Regents, The University of Texas Systems (Austin, TX)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC03-76SF00098
Assignee:
Board of Regents, The University of Texas Systems (Austin, TX)
Patent Number(s):
7,678,503
Application Number:
US Patent Application 11/861,248
OSTI ID:
1014487
Country of Publication:
United States
Language:
English

References (18)

Local Structure and First Cycle Redox Mechanism of Layered Li[sub 1.2]Cr[sub 0.4]Mn[sub 0.4]O[sub 2] Cathode Material journal January 2002
Role of Alumina Coating on Li−Ni−Co−Mn−O Particles as Positive Electrode Material for Lithium-Ion Batteries journal July 2005
Effects of metal oxide coatings on the thermal stability and electrical performance of LiCoCO2 in a Li-ion cell journal February 2004
Novel Layered Li-Cr-Ti-O Cathode Materials Related to the LiCrO[sub 2]-Li[sub 2]TiO[sub 3] Solid Solution journal January 2003
Improvement of Structural Stability of LiCoO[sub 2] Cathode during Electrochemical Cycling by Sol-Gel Coating of SnO[sub 2] journal January 1999
Electrochemical and Ex Situ X-Ray Study of Li(Li[sub 0.2]Ni[sub 0.2]Mn[sub 0.6])O[sub 2] Cathode Material for Li Secondary Batteries journal January 2003
Overcapacity of Li[Ni[sub x]Li[sub 1/3−2x/3]Mn[sub 2/3−x/3]]O[sub 2] Electrodes journal January 2004
The Effect of Al[sub 2]O[sub 3] Coating on the Cycle Life Performance in Thin-Film LiCoO[sub 2] Cathodes journal January 2002
Understanding the Anomalous Capacity of Li / Li [ NixLi ( 1 / 3 − 2x / 3 ) Mn ( 2 / 3 − x / 3 ) ]  O2 Cells Using In Situ X-Ray Diffraction and Electrochemical Studies journal January 2002
Surface Modification of High Capacity Layered Li [ Li0.2Mn0.54Ni0.13Co0.13 ] O2 Cathodes by AlPO4 journal January 2008
High Capacity Surface-Modified LiCoO[sub 2] Cathodes for Lithium-Ion Batteries journal January 2003
Phase Relationships and Structural and Chemical Stabilities of Charged Li[sub 1−x]CoO[sub 2−δ] and Li[sub 1−x]Ni[sub 0.85]Co[sub 0.15]O[sub 2−δ] Cathodes journal January 2003
Synthesis, Structure, and Electrochemical Behavior of Li[Ni[sub x]Li[sub 1/3−2x/3]Mn[sub 2/3−x/3]]O[sub 2] journal January 2002
A Novel Fabrication Technique for Producing Dense Li[Ni[sub x]Li[sub (1∕3–2x∕3)]Mn[sub (2∕3−x∕3)]]O[sub 2], 0≤x≤1∕2 journal January 2005
Structure, Electrochemical Properties, and Thermal Stability Studies of Cathode Materials in the xLi[Mn[sub 1∕2]Ni[sub 1∕2]]O[sub 2]⋅yLiCoO[sub 2]⋅zLi[Li[sub 1∕3]Mn[sub 2∕3]]O[sub 2] Pseudoternary System (x+y+z=1) journal January 2005
The effect of Al(OH)3 coating on the Li[Li0.2Ni0.2Mn0.6]O2 cathode material for lithium secondary battery journal August 2005
Structural investigation and electrochemical behaviour of Li[NixLi(1/3−2x/3)Mn(2/3−x/3)]O2 compounds by a simple combustion method journal April 2004
Synthesis and electrochemical properties of layer-structured 0.5Li(Ni0.5Mn0.5)O2–0.5Li(Li1/3Mn2/3)O2 solid mixture journal November 2003

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