Zinc-based electrode particle form

H - Electricity – 01 – M

Patent

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Details

H01M 4/06 (2006.01) B22F 1/00 (2006.01) H01M 4/24 (2006.01)

Patent

CA 2298571

A primary electrochemical cell (10) with an anode (20) comprising zinc-based particles suspended in a fluid medium is disclosed. The zinc-based particles include at least about 1 percent, by weight, of fines (particles of -200 mesh size) or dust (particles of -325 mesh size). The zinc-based particles can have a relatively small average particle size. The zinc-based particles can be alloyed with, for example, indium and/or bismuth and be of spherical, acicular or flake shape. The anode (20) can have a low resistivity at low zinc loadings, and the cell (10) can demonstrate good mechanical stability and overall performance.

La présente invention concerne une cellule électrochimique (10) primaire comprenant une anode (20) constituée de particules à base de zinc en suspension dans un milieu fluide. Les particules à base de zinc comprennent au moins environ 1 % en poids de fines particules (? 200 mesh) ou de poussière (? 325 mesh). Ces particules à base de zinc sont de taille moyenne relativement petite. Ces particules peuvent, par exemple, s'allier avec de l'indium et/ou du bismuth et présenter une forme sphérique, aciculaire ou une forme de flocon. L'anode (20) peut posséder une faible résistivité pour de faibles charges de zinc, et la cellule (10) peut présenter une stabilité mécanique et un rendement global satisfaisants.

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