Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Patent
1986-10-09
1988-12-13
Niebling, John F.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
429212, 423489, H01M 458
Patent
active
047910380
ABSTRACT:
Voltage suppression is an important problem in the Li/CF.sub.x battery system. The voltage that a Li/CF.sub.x battery will deliver just after the circuit has been closed can be as low as the voltage near the end of battery life. Electronic circuitry powered by Li/CF.sub.x batteries are complicated by the need to design around this problem.
The processing of fluorinated carbon (CF.sub.x) to lower the initial voltage suppression is disclosed wherein fluorinated carbon is treated with a Group IA metal-alkyl or -aryl compound. The reaction between these compounds (e.g., n-butyl lithium) and the fluorinated carbon produces a battery grade product which undergoes reduced to almost no suppression of the initial closed circuit voltage.
REFERENCES:
Zieger, et al., Dimer Formation During Reaction of Benzylic Halides with Lithium Naphthalene and Mechanisms of Dimer Formation from Reactions of Benzylic Halides with Benzylic Carbanions, J. Amer, Chem. Soc. 98(9), 2580-5, Apr. 1976.
Whittingham, Mechanism of Reaction of the Fluorographite Cathode, J. Electrochem Soc. 122 (4), 526-7, Apr. 1975.
Meites "Polarographic Techniques" 2nd Edition, pp. 323-329, John Wiley & Sons, New York, N.Y.
Nalewajek David
Pyszczek Michael F.
Shia George A.
Allied-Signal Inc.
Friedenson Jay P.
Marquis Steven P.
Niebling John F.
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