Chemistry of inorganic compounds – Halogen or compound thereof – Plural metal or metal and ammonium containing
Patent
1987-11-16
1989-08-29
Doll, John
Chemistry of inorganic compounds
Halogen or compound thereof
Plural metal or metal and ammonium containing
423301, 423341, 423472, C01B 908, C01B 1100, C01B 3308, C01B 2510
Patent
active
048615730
ABSTRACT:
The present invention provides a coating for electrodes for use in electrochemical cells having an electrochemically active species and an electrolyte. The coating contains active species material and is selectively permeable allowing for the diffusion of the active species through the coating during operation of the cell while providing a substantially impervious barrier to the electrolyte. The coating optionally further includes a polymer layer over the active species containing coating or layer for maintaining the mechanical integrity of the active species layer.
Electrodes utilizing the coatings described herein may be used in primary and secondary cells over a wide range of operating temperatures to deliver better electrochemical performance even at room temperature.
Methods of making the coating and an apparatus for performing these methods on a continuous basis are disclosed.
A novel composition of matter is disclosed comprising lithium, silicon, and fluorine prepared by exposing lithium metal to SiF.sub.4.
REFERENCES:
Chemical Abstracts, vol. 106, No. 6, Feb. 9, 1987, Preparation and X-Ray and NMR structural studies of Lithium Zinc Fluoride 106:42789b 1986.
Comprehensive Inorganic Chemistry, Bailar et al., 7/31/83, p. 1466.
Structural Inorganic Chemistry, Wells, 1962.
de Neufville John P.
Ovshinsky Stanford R.
Rajoria Dalbir
Doll John
Freeman Lori S.
Voltaix, Inc.
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