Phosphate-free electrolyte for rechargeable lithium ion cells

Details Phosphate-free electrolyte for rechargeable lithium ion cells Phosphate-free electrolyte for rechargeable lithium ion cells

2005-02-14

2008-11-11

Cantelmo, Gregg (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

C429S326000

Reexamination Certificate

active

07449263

ABSTRACT:
A more efficient LiPF6lithium-ion electrochemical system composed of a phosphate free, borate lithium salt electrolyte LiTPTB composed of LiBC32F24H12in a ternary mixed organic solvent containing a 1:1:1 volume ratio of EC, DMC and EMC is provided. The borate salt of the LiTPTB electrolyte decomposes at temperatures above 110° C. and does not react with water and also has an oxidation potential of about 4.4 V versus lithium, making it suitable for use in high voltage lithium-ion cells and batteries. A 0.3 to 1.0 M molar concentration of LiTPTB composed of LiBC32F24H12in a ternary mixed organic solvent containing a 1:1:1 volume ratio of EC, DMC and EMC is also provided.

REFERENCES:
patent: 2005/0023153 (2005-02-01), Bakker et al.
patent: 02069651 (1990-03-01), None

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