Patent ID: 8142540
Filing Date: 2012-03-27
Classification: B22F,C22C,H01M,Y02E

Abstract:
1. An alloyed zinc powder for alkaline batteries comprising particles of said alloyed zinc powder, at least a portion of said particles having at least one hole therein, wherein said at least one hole is detectable by direct visual observation under a microscope at 30× magnification, wherein an alkaline battery comprising said zinc alloyed powder comprising particles having at least one hole therein in an amount of at least 31% by count in the sieving fraction 250 to 425 μm exhibits a drain capacity that is at least 10% better in an intermittent drainage test than an alkaline battery comprising a powder prepared using classical centrifugal atomization techniques, wherein said alloyed zinc powder enhances the high drain behavior of an alkaline battery comprising the powder compared to an alkaline battery comprising classical powders with the same particle size distribution.