E.i. Dupont De Nemours and Company

US Government As Represented by the Secretary of the Army

Atlantic Richfield Company

The University of Tennessee Research Foundation

The United States of America As Represented by the United States Energy

Martin Marietta Energy Systems, Inc.

Gleb Mamantov

Roberto Marassi

Jack P Young

James Q Chambers

Charmaine B Mamantov

A high temperature sensing probe includes an optical fiber or rod having a distal end and a proximal end. The optical fiber or rod has a coating secured to the distal end thereof, wherein the coating is capable of producing a Raman spectrum when exposed to an exciting radiation source.

Passivated diamond film temperature sensing probe and measuring system

A process for producing fluorine from calcium fluoride in which calcium fluoride is dissolved in a molten salt electrolyte containing an alkali metal tetrafluoroborate and the melt is electrolyzed at a temperature below 400.degree. C.

Process for preparing fluorine by electrolysis of calcium fluoride

A sodium-tetravalent sulfur molten chloroaluminate cell with a .beta.'-alumina sodium ion conductor having a S-Al mole ratio of above about 0.15 in an acidic molten chloroaluminate cathode composition is disclosed. The cathode composition has an AlCl.sub.3 -NaCl mole percent ratio of above about 70-30 at theoretical full charge. The cell provides high energy densities at low temperatures and provides high energy densities and high power densities at moderate temperatures.

Sodium-tetravalent sulfur molten chloroaluminate cell

A method for dehydrating aluminum chloride hexahydrate which comprises contacting the hexahydrate with a melt consisting essentially of a chlorobasic mixture of aluminum chloride and alkali metal chloride and then treating the resulting mixture with HCl to form an AlCl.sub.3 /alkali metal chloride melt enriched in AlCl.sub.3. NaCl is a preferred alkali metal chloride.

Dehydration of aluminum chloride hexahydrate

A molten salt electrochemical system for battery applications comprises tetravalent sulfur as the active cathode material with a molten chloroaluminate solvent comprising a mixture of AlCl.sub.3 and MCl having a molar ratio of AlCl.sub.3 /MCl from greater than 50.0/50.0 to 80/20.

Cathode for molten salt batteries

A molten salt electrochemical system for battery applications is provided mprising aluminum as the anode, positive oxidation states of either iodine or sulfur as the cathode, and a low-melting molten mixture of aluminum chloride and alkali chloride disposed between the anode and cathode and in contact with each.

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Gleb Mamantov