Thermally stable, highly conductive salt

Details Thermally stable, highly conductive salt Thermally stable, highly conductive salt

1998-01-30

2000-01-18

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

252 622, H01M 618

Patent

active

060156392

ABSTRACT:
The invention provides a new family of compounds and a method of making the compounds. The new compounds are useful as ion conductive salts, and particularly useful as salts for batteries. The compounds of the invention are prepared from three principal reagents, bis (trifluoromethanesufonyl) methane (CF.sub.3 SO.sub.2).sub.2 CH.sub.2 ; benzoyl chloride; and pyridine which facilitates reaction and then is removed. A precursor sodium salt (CF.sub.3 SO.sub.2).sub.2 CHNa is first prepared. Then, equimolar amounts of the precursor sodium salt and pyridine are dissolved in anhydrous acetonitrile. A stoichiometric amount of the selected substitute benzoyl chloride is then added drop by drop. After addition of Li.sub.3 PO.sub.4, there is pyridine release and formation of the product of the aforesaid two reagents. In the benzene ring, R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are each identical or different and are each independently selected from hydrogen and an electron withdrawing substituent.

REFERENCES:
patent: 5411820 (1995-05-01), Chaloner-Gill
patent: 5418091 (1995-05-01), Gozdz et al.
Benrabah, D., J.-Y. Sanchez, D. Deroo and M. Armand; "Synthesis and Electrochemical Characterization of New Bulky Lithium Salts"; Solid State Ionics 70/71, 157-162 (1994). No month available.
Benrabah, D., J.-Y. Sanchez and M. Armand; "Synthesis and Electrochemical Characterization of a New Family of Lithium Salts"; Solid State Ionics 60, 87-92 (1993). N/A month.
Holcomb, Nelson R., Paul G. Nixon, and Gary L. Gard; Richard L. Nafshun and Michael M. Lerner; "Synthesis of LiCH(SO.sub.2 CF.sub.3).sub.2 and Ionic Conductivity of Polyether-Salt Complexes"; Electrochem. Soc., vol. 143, No. 4, 1297-1300 (Apr. 1996).
Koshar, R.J. and R.A. Mitsch, "Bis(perfluoroalkylsulfonyl)methanes and Related Disulfones"; Journal Organic Chemistry, vol. 38, No. 19 (1973). N/A month.
Benrabah, D., J. -Y Sanchez, D. Deroo and M. Armand; "Synthesis and Electrochemical Chrarcterization of New Bulky Lithium Salts"; Solid State Ionics 70/71, 157-162 (1994).

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