LEAD ACID STORAGE BATTERY

• Main Authors: SHIOMI MASAAKI, OKADA YUICHI
• Format: Patent
• Language: English
• Published: 09.01.1992
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PURPOSE:To achieve excellent cycle life performance by using a Pb alloy grating, in which phosphoric ions are implanted in the facial course of a grating consisting of Pb-Ca series alloy. CONSTITUTION:A Pb alloy grating is used, in which phosphoric ions are implanted into the facial course of a grating consisting of Pb-Ca series alloy in an mount ranging 10 -10 pieces per cm . The cause of a battery using Pb-Ca series alloy easily presenting premature drop of the capacity is that the corroding products from grating are very dense and highly reactive different from the corroding products from a grating of Pb-Sb series alloy, and therefore the corrosion layer on the occasion of discharging changes to a non-active state layer of lead sulfate to hinder the active substance from performing discharge. However, implantation of phosphoric ions into the surface of the grating causes change in the form and/or nature of the grating corrosion layer, and it becomes difficult for non-active state layer to be formed on the occasion of discharge. Thereby an excellent cycle life performance is obtained.