Zinc powders for use in electrochemical cells

Details Zinc powders for use in electrochemical cells Zinc powders for use in electrochemical cells

B - Operations, Transporting

22

F

B22F 9/08 (2006.01) B22F 1/00 (2006.01) H01M 4/24 (2006.01) H01M 4/42 (2006.01)

Patent

CA 2495032

A zinc powder for use in a zinc anode, negative electrode or electrochemical cell comprising zinc metal or zinc alloy particles. The zinc particles have a narrow particle size distribution and a major portion of the having a well controlled chemistry and specific shape, such as teardrop, strand teardrop, acicular or spherical thereby providing improved discharge characteristics and reduced gassing. The powder can be produced by impulse atomisation.

L'invention concerne une poudre de zinc utilisable dans une anode de zinc, une électrode négative ou une cellule électrochimique contenant des particules de métal de zinc ou d'alliage de zinc. Les particules de zinc présentent une granulométrie étroite ; une grande partie de ces particules présentent une chimie bien régulée et une forme spécifique, telle qu'une larme, une larme en brin, aciculaire ou sphérique, ce qui permet d'obtenir de meilleures caractéristiques de décharge et un dégagement gazeux réduit.

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