Battery Engineering, Inc.

Other

USA as Represented by Secretary of the Navy

Carl R Schlaikjer

James Epstein

Melinda D Jones

Arden P Johnson

Sean T Riley

An inorganic electrolyte rechargeable electrical storage cell is shown which makes use of non-metallic electrodes in combination with an inorganic electrolyte that includes sulfur dioxide. The electrolyte can be for example a lithium and/or a calcium tetrachloroaluminate salt in sulfur dioxide. The anode of the cell is made of a carbon for example a graphite while the cathode is produced from a carbon having a relatively much higher surface area.

Rechargeable lithium ion cell

This disclosure relates to a method for making a lithium anode for an electrochemical cell and more particularly to a method of extruding a ribbon of lithium into a reaction chamber for reacting the surface of the extruded lithium metal with nitrogen to produce a coating of lithium nitride on the surface of the lithium metal ribbon.

Method for making a lithium anode for an electrochemical cell

An electrolyte salt is shown herein for use in lithium/thionyl chloride primary cells that is provided to minimize the start-up delay otherwise encountered after too long a storage period or storage at too high a temperature. The salt is a reaction product produced by refluxing lithium triflate with either aluminum chloride or lithium tetrachloraluminate or a mixture of thereof dissolved in thionyl chloride.

Primary cell having minimized drop in the start-up potential

Method for making electrolytes for Li/metal tetrachoroaluminate.nSO.sub.2 /carbon rechargeable cells containing calcium or sodium tetrachloroaluminate, by treating the metal tetrachloroaluminate salt mixture with sulfuryl chloride to purify it of hydrolysis products, removing the sulfuryl chloride, and dissolving the mixture in sulfur dioxide.

Method of making tetrachloroaluminate + sulfur dioxide electrolytes in

The lithium/carbon/SO.sub.2 energy cell is disclosed wherein the electrolyte includes lithium tetrachloroaluminate. In order to increase the electrical capacity of the cell, the concentration of lithium tetrachloroaluminate in the electrolyte is increased to calcium tetrachloroaluminate and added to the solution to aid the mass transport as well as the lower freezing point of the electrolyte. In order to eliminate any corrosive effect of the calcium added to on the lithium anode, this disclosure provides a teaching of the use of an electrolyte solution and is essentially free of any moist content.

Lithium/sulfur dioxide cell

A lithium electrochemical power source is shown, adapted for use as a primary and/or secondary cell, wherein a non-aqueous electrolyte is used, the solvent being a C.sub.2 to C.sub.4 aliphatic acid chloride and the solute being a lithium aluminum halide with an additive selected from the group consisting of bromine and iodine.

Growing community of inventors

Concord, MA, United States of America

Carl R Schlaikjer