Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1988-09-14
1990-01-09
Kalafut, Stephen J.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429218, 423509, 423 62, 296235, H01M 458, H01M 600
Patent
active
048927953
ABSTRACT:
A process of making a lithium cell with a positive electrode that comprises a niobium chalcogenide (e.g., NbSe.sub.3) active material. The process comprises forming the active material by a procedure that comprises forming a layer of Nb powder on an inert substrate (e.g., an alumina plate), and reacting the powder with selenium or sulfur vapor such that the desired (fibrous) chalcogenide is formed. The powder layer typically is formed by depositing (e.g., by spraying) a layer of slurry on the substrate, with the slurry comprising a liquid such as propylene glycol and Nb powder, and removing the liquid from the deposited slurry. The resulting layer of Nb powder can be of uniform thickness, advantageously is less than 0.1 mm thick, and adheres relatively well to the substrate. In preferred embodiments reacting the Nb powder with Se vapor comprises a two-stage heat treatment, the first stage comprising maintaining the powder in contact with Se vapor for at least four hours at a temperature in the range 520.degree.-625.degree. C., and the second stage for at least two hours at a temperature in the range 625.degree.-780.degree. C.
REFERENCES:
patent: 3864167 (1975-02-01), Broadhead et al.
patent: 4035555 (1977-07-01), Murphy et al.
patent: 4117209 (1978-09-01), Markin et al.
patent: 4160069 (1979-07-01), Johnson et al.
patent: 4452777 (1984-06-01), Abraham et al.
patent: 4740433 (1988-04-01), Lu
patent: 4753859 (1988-06-01), Brand et al.
High-Energy Batteries, Plenum Press, New York, 1967, by Raymond Jasinski, pp. 140-144.
Fang Wei-Chou
Vyas Brijesh
American Telephone and Telegraph Company AT&T Bell Laboratories
Kalafut Stephen J.
Nilsen Walter G.
LandOfFree
Non-aqueous cell comprising niobium triselenide does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-aqueous cell comprising niobium triselenide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-aqueous cell comprising niobium triselenide will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-145111