Manganese dioxide cathode for a rechargeable alkaline cell,...

Details Manganese dioxide cathode for a rechargeable alkaline cell,... Manganese dioxide cathode for a rechargeable alkaline cell,...

H - Electricity

01

M

319/106, 319/36

H01M 10/28 (2006.01) H01M 2/00 (2006.01) H01M 4/62 (2006.01) H01M 10/34 (2006.01) H01M 4/50 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2010142

This invention relates to rechargeable manganese dioxide cells (usually alkaline cells with zinc anodes or cells having non-aqueous electrolyte and lithium anodes), and particularly to the cathodes therefor. In keeping with the present invention, the cathodes are essentially unconstrained -- that is, no cage is used in the cell between the cathodes and the anodes. The cathode is restricted from significantly changing its dimensions during discharge of the cell, when it is inclined to swell -- as opposed to the tendency of the cathode to contract during a charge cycle. The cathode substantially fills the entire space allotted for it within the cell, with a slight accommodation for height-wise or longitudinal expansion or growth of the cathode of bobbin-type cells, or cross-wise expansion or growth of button- type cells. There may be additives in the cathode mix, including particularly conductive fibres of graphite or other conductive materials; and other materials may also be added to the cathode mix, including metallic additives. Methods of manufacture are also provided by the present invention, including compaction and recompaction of the cathode pellet, and a range of compaction pressures is suggested. Cells in keeping with the present invention are capable of exhibiting high current drain rates, and long cycle life.

Affiliated with

Also associated with

Rating

Manganese dioxide cathode for a rechargeable alkaline cell,... 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 cathode for a rechargeable alkaline cell,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manganese dioxide cathode for a rechargeable alkaline cell,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1528733