Allied Corporation

Alliedsignal Inc.

Allied Chemical Corporation

David J Friedland

Lynn E McCurry

Richard E Eibeck

George A Shia

Hsueh Sung Tung

David Nalewajek

Bernard F Sukornick

Martin A Robinson

Jung T Kim

Alexander M Saprokhin

Richard M Baran

George D Lockyer

Floyd L Tewksbury

A means to eliminate the suppression of the closed circuit voltage of a Li/CF.sub.x battery during the initial part of its discharge is effected by blending an additive CF.sub.x which does not show significant voltage suppression with the (bulk) CF.sub.x that is normally used in fabricating cathodes for such batteries. Blending is used to get a mixture which has substantially minimized voltage suppression and has good capacity. The closed circuit voltage of a Li/CF.sub.x battery during the initial 10% of discharge is known to be lower than the closed circuit voltage during the later stages. This characteristic adversely impacts applications since the voltage at beginning of life is as low as the voltage indicating end of life, complicating design of circuitry to indicate end of life. In the disclosure, the material with no significant voltage suppression discharges preferentially at the beginning of discharge leading to higher voltage and no suppression. The bulk material also discharges to some extent during this early stage of discharge. When the small percentage of coke-based CF.sub.x additive is depleted, the bulk CF.sub.x has discharged to the point that it no longer shows voltage suppression.

Fluorinated carbon composition for use in fabricating a Li/CF.sub.x

A means to eliminate the suppression of the closed circuit voltage of a Li/CF.sub.x battery during the initial part of its discharge is effected by blending an additive CF.sub.x which does not show significant voltage suppression with the (bulk) CF.sub.x that is normally used in fabricating cathodes for such batteries. Blending is used to get a mixture which has substantially minimized voltage suppression and has good capacity. The closed circuit voltage of a Li/CF.sub.x battery during the initial 10% of discharge is known to be lower than the closed circuit voltage during the later stages. This characteristic adversely impacts applications since the voltage at beginning of life is as low as the voltage indicating end of life, complicating design of circuitry to indicate end of life. In the disclosure, the material with no significant voltage suppression discharge, preferentially at the beginning of discharge leading to higher voltage and no suppression. The bulk material also discharges to some extent during this early stage of discharge. When the small percentage of coke-based CF.sub.x additive is depleted, the bulk CF.sub.x has discharged to the point that it no longer shows voltage suppression.

Method of inhibiting voltage suppression lithium/fluorinated carbon

A process is disclosed for producing fluorinated carbon (CF.sub.x) admixed which can be used in a lithium battery to eliminate low voltage at the beginning of discharge. The process uses a thick carbon bed to assure proper degree and type of underfluorination of the CF.sub.x. The inhomogeneous fluorinated carbon produced is a fully, or overfluorinated CF.sub.x with a small amount of underfluorinated material to eliminate voltage suppression in Li/CF.sub.x batteries.

Lithium/fluorinated carbon battery with no voltage delay

A method for treating process waste consisting of uranium hexafluoride, UF.sub.6, molybdenum hexafluoride, MoF.sub.6 and molybdenum oxytetrafluoride, MoOF.sub.4 is provided wherein the foregoing mixture is hydrolyzed in an aqueous solution of ammonium carbonate and ammonium hydroxide. The resulting mother liquor is digested at 60.degree.-80.degree. C. to drive off carbon dioxide and convert the ammonium uranyl carbonate, (NH.sub.4).sub.4 UO.sub.2 (CO.sub.3).sub.3 to ammonium diuranate, (NH.sub.4).sub.2 U.sub.2 O.sub.7. The pH is maintained above 9 to prevent premature precipitation of the molybdenum values as molybdic acid or uranyl molybdate. The ammonium diuranate which forms as a yellow solid is filtered, slurried in aqueous ammonium hydroxide, filtered and dried. The yield is quantitative. Pyrolysis results in conversion of the diuranate salt to uranium oxide, U.sub.3 O.sub.8, of suitable purity to be recycled in the uranium hexafluoride production process. The combined filtrates which contain the molybdenum values and ammonium fluoride by-product are diluted, and stirred, with 95% ethanol to precipitate white, crystalline, ammonium molybdate, (NH.sub.4).sub.2 MoO.sub.4. The ammonium fluoride remains soluble. The ammonium molybdate is filtered, dried and calcined at 600.degree. C. for 2 hours to yield molybdenum trioxide, MoO.sub.3 in &gt;90% yield and essentially free of uranium contamination. Fluoride contamination in either of the reprocessed materials is minimal.

Separation and recovery of molybdenum values from uranium process waste

A cell and process is provided for the production of fluorine comprising electrolyzing a liquid mixture of fluorides of alkali metal, ammonium and hydrogen fluoride. The cell anode comprises a stock of anode plates with internal passages or it may comprise a carbon shape provided with grooves and passages and fitted to a central conductor which conducts current from the exterior of the cell to the carbon anode plates within the cell. The anode having a substantially expanded working surface has the capability of removing fluorine internally. A louvered cathode permits most of the hydrogen to be vented away from the zone between the electrodes through which current passes thus reducing the ohmic voltage loss. The cathode, rather than being louvered, can be expanded metal or punched sheet or gauze. The anode, cathode and barrier may be cylindrical in form although other shapes, for instance rectangular or square in cross section or even of hexagonal section, may be used if desired. Combination of the segmented anode design with a louvered cathode provides a unique cell for fluorine production because virtually the same electrolysis condition exists at any part of the anode and cathode.

Process for the electrolytic production of fluorine and novel cell

Certain metals, and especially uranium, are recovered from an organic solvent by stripping with an aqueous solution containing polymeric phosphates under conditions in which the polymeric phosphate does not quickly hydrolize and metal preferentially dissolves in the aqueous solution. The metal may then be recovered from the aqueous solution by hydrolizing the polymeric phosphates and either precipitating the metal or reextracting the metal at higher concentrations with an organic solvent containing extractants.

Growing community of inventors

Snyder, NY, United States of America

David J Friedland