lithium carbide is used in the manufacturing of a wide variety of products for industrial, technical and medical applications. However, not all lithium carbonate is created equal, and it’s important to understand which product is best for your application.
Carbide refers to compounds containing carbon and less electronegative elements, usually distinguished by their chemical bonding (ionic or covalent). They can be prepared at high temperatures from metals and metal oxides.
It has been found that lithium carbide is a superior replacement for the cobalt oxide material currently used in the cathode of most lithium ion batteries. It is inexpensive, non-toxic and non-flammable.
According to the invention, an improved cathode for use in a lithium ion rechargeable battery includes graphite intercalated with a mixture of lithium carbide and a lithium salt such as lithium tetrafluoroborate. A porous separator is also optionally used to prevent inadvertent contact between the anode and the cathode.
The anode 33 of the battery 30 is typically made of graphite, intercalated with metallic lithium and separated from the cathode 34 by a porous separator 37. A motor 39 or other electrical load is positioned between the anode and the cathode to provide the driving force for the electric discharge from the anode to the cathode when the battery 30 is discharged.
Prior art rechargeable batteries have an anode and a cathode that contain a non-aqueous solution of lithium salt(s) in a liquid electrolyte such as propylene carbonate. The anode and the cathode are stacked together and sealed in a close fitting polypropylene case having electrical leads to the anode and to the cathode.