Chemistry: electrical current producing apparatus – product – and – Preserving cell in storage feature
Patent
1986-06-10
1987-11-17
Walton, Donald L.
Chemistry: electrical current producing apparatus, product, and
Preserving cell in storage feature
429101, 429218, 429246, H01M 402, H01M 1036
Patent
active
047074221
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:
patent: 3993501 (1976-11-01), Kalnoki-Kis
patent: 4170693 (1979-10-01), Catanzarite
patent: 4296185 (1981-10-01), Catanzarite
patent: 4440836 (1984-04-01), Bailey
patent: 4624902 (1986-11-01), deNeufville et al.
de Neufville John P.
Ovshinsky Stanford R.
Rajoria Dalbir
Voltaix, Inc.
Walton Donald L.
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