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Title: Cation-substituted spinel oxide and oxyfluoride cathodes for lithium ion batteries

Patent ·
OSTI ID:1176303
;

The present invention includes compositions and methods of making cation-substituted and fluorine-substituted spinel cathode compositions by firing a LiMn2-y-zLiyMzO4 oxide with NH4HF2 at low temperatures of between about 300 and 700.degree. C. for 2 to 8 hours and a .eta. of more than 0 and less than about 0.50, mixed two-phase compositions consisting of a spinel cathode and a layered oxide cathode, and coupling them with unmodified or surface modified graphite anodes in lithium ion cells.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC03-76SF00098
Assignee:
Board of Regents, The University of Texas System (Austin, TX)
Patent Number(s):
7,718,319
Application Number:
11/861,252
OSTI ID:
1176303
Resource Relation:
Patent File Date: 2007 Sep 25
Country of Publication:
United States
Language:
English

References (29)

Structural and electrochemical study of Li–Al–Mn–O–F spinel material for lithium secondary batteries journal August 2005
Microstrain and Capacity Fade in Spinel Manganese Oxides journal January 2002
High Capacity, Surface-Modified Layered Li [Li (1−x) ∕ 3Mn (2−x) ∕ 3Nix ∕ 3Cox ∕ 3 ] O2 Cathodes with Low Irreversible Capacity Loss journal March 2006
Influence of the Lattice Parameter Difference between the Two Cubic Phases Formed in the 4 V Region on the Capacity Fading of Spinel Manganese Oxides journal July 2003
An Investigation of Lithium Ion Insertion into Spinel Structure Li-Mn-O Compounds journal January 1996
High Rate, Superior Capacity Retention LiMn[sub 2−2y]Li[sub y]Ni[sub y]O[sub 4] Spinel Cathodes for Lithium-Ion Batteries journal January 2003
An Investigation of Capacity Fading of Manganese Spinels Stored at Elevated Temperature journal January 1998
Dissolution of Spinel Oxides and Capacity Losses in 4V Li / LixMn2O4 Cells journal January 1996
Origin of the high voltage (>4.5 V) capacity of spinel lithium manganese oxides journal October 2003
Structural Fatigue in Spinel Electrodes in High Voltage (4 V) Li/Li[sub x]Mn[sub 2]O[sub 4] Cells journal January 1999
On the incorporation of fluorine into the manganese spinel cathode lattice journal May 2009
Superior Capacity Retention Spinel Oxyfluoride Cathodes for Lithium-Ion Batteries journal March 2006
Factors Influencing the Capacity Fade of Spinel Lithium Manganese Oxides journal January 2004
Factors Controlling the Fluorine Content and the Electrochemical Performance of Spinel Oxyfluoride Cathodes journal January 2007
The elevated temperature performance of the LiMn2O4/C system: failure and solutions journal September 1999
Layered Li(Li0.2Ni0.15+0.5zCo0.10Mn0.55−0.5z)O2−zFz cathode materials for Li-ion secondary batteries journal August 2005
Suppression of Mn Dissolution in Spinel Cathodes by Trapping the Protons within Layered Oxide Cathodes journal January 2007
Degradation mechanisms in doped spinels of LiM0.05Mn1.95O4 (M=Li, B, Al, Co, and Ni) for Li secondary batteries journal July 2000
Failure Mechanism and Improvement of the Elevated Temperature Cycling of LiMn[sub 2]O[sub 4] Compounds Through the Use of the LiAl[sub x]Mn[sub 2−x]O[sub 4−z]F[sub z] Solid Solution journal January 2001
Effect of Al3 +  and F −  Doping on the Irreversible Oxygen Loss from Layered Li [ Li0.17Mn0.58Ni0.25 ] O2 Cathodes journal January 2007
A causal study of the capacity fading of Li1.01Mn1.99O4 cathode at 80°C, and the suppressing substances of its fading journal August 2001
Correlating Capacity Loss of Stoichiometric and Nonstoichiometric Lithium Manganese Oxide Spinel Electrodes with Their Structural Integrity journal January 1999
Improvement of High-Voltage Cycling Behavior of Surface-Modified Li[Ni[sub 1∕3]Co[sub 1∕3]Mn[sub 1∕3]]O[sub 2] Cathodes by Fluorine Substitution for Li-Ion Batteries journal July 2005
Influence of fluorine substitution on the electrochemical performance of 3 V spinel Li4Mn5O12−ηFη cathodes journal November 2007
New investigation of fluorine-substituted spinel LiMn2O4−xFx by using sol–gel process journal September 2005
Proton Insertion into Oxide Cathodes during Chemical Delithiation journal January 2006
Influence of Fluorine on the Electrochemical Performance of Spinel LiMn[sub 2−y−z]Li[sub y]Zn[sub z]O[sub 4−η]F[sub η] Cathodes journal January 2007
Effect of fluorine on the electrochemical properties of layered Li(Ni0.5Mn0.5)O2 cathode materials journal August 2005
Enhancement of the electrochemical properties of Li1Mn2O4 through chemical substitution journal September 1999

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36 MATERIALS SCIENCE
25 ENERGY STORAGE