| 摘要 |
PURPOSE:To keep down the internal resistance up to being as low as capable of taking in a discharge reaction without making all processes unnecessary for forming a silver layer on a silver oxide surface by the way of preliminary discharge, by containing phosphorous graphite in a sticking layer of manganese dioxide covering the silver oxide. CONSTITUTION:Positive pole black mixture 1 is made up in the following process that silver oxide powder is granulated into 100-300mu or so in advance while a manganese dioxide or about 2-20mu and phosphorous graphite both are mixed with this granulated powder, and at the time of this mixing, each surface of the said silver oxide granule is layered by dint of the moisture absorption and water absorbability of the manganese dioxide. This black mixture is press- molded into the specified thickness by means of a routine process but even after molding, the sticking layer of said manganese dioxide and phosphorous graphite remains kept intact. The amount of the manganese dioxide used is set at 2-7pts.wt. to 100pts.wt. of the silver oxide while the amount of the phosphorous graphite used is set at 0.2-1pts.wt. to 100pts.wt. in total of the silver oxide and the manganese dioxide, respectively. |
