Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Patent
1997-06-24
1999-01-26
Bell, Bruce F.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
205539, 423605, H01M 450
Patent
active
058636757
ABSTRACT:
Disclosed is a process for treating manganese dioxide containing ion-exchangeable cations by replacing the ion-exchangeable cations present in the manganese dioxide with lithium by a process comprising first replacing ion-exchangeable cations present in the manganese dioxide with hydrogen. This readily is accomplished by slurrying the manganese dioxide in an aqueous acid solution. The resulting acidic manganese dioxide then is neutralized with a basic solution of a lithium containing compound, such as lithium hydroxide. This neutralization step serves to accomplish replacement of the previously introduced hydrogen, by ion-exchange, with lithium. The manganese dioxide then is washed with water, dried, and heat-treated at an elevated temperature, in conventional manner, to convert the gamma manganese dioxide to a mixture of the gamma and beta forms, which then is used as the active cathodic component in an electrochemical cell.
REFERENCES:
patent: 2956860 (1960-10-01), Welsh
patent: 3065155 (1962-11-01), Welsh
patent: 3900385 (1975-08-01), Era et al.
patent: 4277360 (1981-07-01), Mellors et al.
patent: 4312930 (1982-01-01), Hunter
patent: 4665049 (1987-05-01), Miyai et al.
patent: 4921689 (1990-05-01), Walker et al.
patent: 4959282 (1990-09-01), Dahn et al.
patent: 5156934 (1992-10-01), Kainthia et al.
patent: 5166012 (1992-11-01), Rossouw et al.
patent: 5482796 (1996-01-01), Wang et al.
Thackeray, M.M. and DeKock, A.; JSSCBI, 74 (1988), pp. 414-418; "Synthesis of .gamma.-MnO.sub.2 from LiMnO.sub.4 for LiMnO.sub.2 Battery Applications".
Thackeray, M.M. and DeKock, A. JSSCBI, 74 (1988), pp. 414-418; Synthesis of .gamma.-MnO.sub.2 from LiMnO.sub.4 for LiMnO.sub.2 Battery Applications.
Bowden William L.
Capparella Mark
Fooksa Radek
Bell Bruce F.
Douglas Paul I.
Duracell Inc
Josephs Barry D.
LandOfFree
Manganese dioxide for lithium batteries does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Manganese dioxide for lithium batteries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manganese dioxide for lithium batteries will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1449072