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Non-aqueous electrolytes for lithium ion batteries

Patent ·
OSTI ID:1225698
;

The present invention is generally related to electrolytes containing anion receptor additives to enhance the power capability of lithium-ion batteries. The anion receptor of the present invention is a Lewis acid that can help to dissolve LiF in the passivation films of lithium-ion batteries. Accordingly, one aspect the invention provides electrolytes comprising a lithium salt; a polar aprotic solvent; and an anion receptor additive; and wherein the electrolyte solution is substantially non-aqueous. Further there are provided electrochemical devices employing the electrolyte and methods of making the electrolyte.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-31109-ENG-38
Assignee:
UCHICAGO ARGONNE LLC
Patent Number(s):
9,184,428
Application Number:
11/373,054
OSTI ID:
1225698
Country of Publication:
United States
Language:
English

References (23)

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Optimized Lithium Iron Phosphate for High-Rate Electrochemical Applications journal January 2004
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Phospho-olivines as Positive-Electrode Materials for Rechargeable Lithium Batteries journal April 1997
Electronically conductive phospho-olivines as lithium storage electrodes journal September 2002
Electroactivity of natural and synthetic triphylite journal July 2001
A Novel Lithium Battery Electrolyte Based on Lithium Fluoride and a Tris(pentafluorophenyl) Borane Anion Receptor in DME journal January 1999
Chemical Overcharge and Overdischarge Protection for Lithium-Ion Batteries journal January 2005
The Compatibility of a Boron-Based Anion Receptor with the Carbon Anode in Lithium-Ion Batteries journal January 2003
Synthesis of a Series of Fluorinated Boronate Compounds and Their Use as Additives in Lithium Battery Electrolytes journal January 2004
2-Vinylpyridine as Film-forming Additve to Suppress the Degradation of Carbon Anode by Dissolved Manganese for C/LiMn 2 O 4 Rechargable Battery journal December 2002
Storage and cycling performance of Cr-modified spinel at elevated temperatures journal October 2001
Anion receptor for enhanced thermal stability of the graphite anode interface in a Li-ion battery journal June 2003
Lithium Bis(oxalato)borate Stabilizes Graphite Anode in Propylene Carbonate journal September 2002
Artificial Organic Host Molecules for Anions journal August 1997
Synthesis of Anion Receptor Grafted Siloxane Polymers and the Ionic Conductivity Studies of Polymer-Salt Complexes journal January 1999
Processing and properties of two different poly (ortho esters) journal January 2000
Rechargeable cathodes based on Li2CrxMn2−xO4 journal April 1995
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
Influence of the Cr Content on the Electrochemical Behavior of the LiCr[sub y]Mn[sub 2−y]O[sub 4] (0≤y≤1) Compounds: III. Galvanostatic Study of Bulk and Superficial Processes journal January 2001
Using a Boron-Based Anion Receptor Additive to Improve the Thermal Stability of LiPF[sub 6]-Based Electrolyte for Lithium Batteries journal January 2002
Improved Elevated Temperature Cycling of LiMn[sub 2]O[sub 4] Spinel Through the Use of a Composite LiF-Based Electrolyte journal January 2001

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25 ENERGY STORAGE