the battery cathode preparation processing of manganese dioxide dry in zinc electrolyte salt

摘要

1. A manganese dioxide-zinc dry cell element with saline electrolyte whose cathode is formed from a mixture comprising essentially synthetic or naturally active manganese dioxide and a specific carbon black, in which mixture is absorbed an electrolyte (A) formed from a solution composed principally of water, zinc chloride and ammonium chloride or an electrolyte (8) for a so-called zinc chloride cell element, formed from a solution composed principally of water, zinc chloride and possibly ammonium chloride in an amount less than 3 wt. % of said mixture, which element is characterized in that the specific carbon black used has a carbon content greater that 99%, an electric resistivity measured at a pressure of 6.3 x 10**5 Pa less than 0.350 ohm-cm and a DBP absorption index greater than 350 mi for 100g of black and in that the weight ratio of the manganese dioxide to the carbon black is within the range of 10-25.