Positive lead paste of lead-acid storage battery pole plate for deep circulation

Abstract

The invention discloses a positive lead paste of a lead-acid storage battery pole plate for deep circulation. The positive lead paste comprises the following components based on a proportion by weight: 750-1,000 of lead powder, 0.5-2 of antimonous oxide, 0.5-2 of bismuth trioxide, 0.5-2 of stannous sulfate, 0-2 of magnesium sulfate, 0-2 of aluminum sulfate, 0.5-2 of zinc oxide, 0.5-3 of colloidal graphite, 0.5-2 of fiber, 50-250 of red lead, 80-98 of dilute sulphuric acid, 1-5 of carboxy methylated cellulose (CMC), 0.5-5 of silicon dioxide and 100-110 of pure water, wherein the dosages of the magnesium sulfate and the aluminum sulfate in the raw materials are not 0 simultaneously, and the length of the fiber is 4 to 10 millimeters. In the positive lead paste of the lead-acid storage battery pole plate for deep circulation, disclosed by the invention, the antimonous oxide and the bismuth trioxide which can be used for preventing a hydrated polymer chain from being decomposed, reducing a crystallization trend and preventing softening and shedding are added, the gas-phase silicon dioxide and the CMC which can be used for improving the adhesion strength of an active substance and the magnesium sulfate, the aluminum sulfate and the zinc oxide which can be used for facilitating the generation of a hydrated active substance chain and improving an interface of a grid and the active substance are added, the optimal effect of the positive lead paste is achieved by adjusting the proportion of the additives, thus, the capacity fading of a front stage is avoided, and the service lifetime for deep circulation of a battery is prolonged.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to a positive electrode paste for lead-acid battery plates used in deep cycle applications. Background technique [0002] Due to the requirements of environmental protection, the state has put forward the requirement of cadmium-free battery industry, so the industry has switched to lead-calcium alloy, but lead-calcium alloy is difficult to solidify, and it is easy to form a calcium sulfate difficult-to-conduct layer on the surface of the grid, resulting in early battery life. The rapid attenuation of the capacity, and later everyone added expensive metal tin to the positive electrode. Although there is a certain improvement effect, a slight fluctuation in the process control of the plate may cause quality accidents, especially in the curing process. A series of complex physical and chemical changes have occurred. The process control is difficult, and sometimes the initial capa...

AI Technical Summary

Problems solved by technology

[0002] Due to the requirements of environmental protection, the state has put forward the requirement of cadmium-free battery industry, so the industry has switched to lead-calcium alloy, but lead-calcium alloy is difficult to solidify, and it is easy to form a calcium sulfate difficult-to-conduct layer on the surface of the grid, resulting in early battery life. The rapid attenuation of the capacity, and later everyone added expensive metal tin to the positive electrode. Although there is a certain improvement effect, a slight fluctuation in the process control of the plate may cause quality accidents, especially in the curing process. A series of complex physical and chemical changes have occurred. The process control is difficult, and sometimes the initial capacity is abnormally attenuated and the active material is rapidly muddled and fails. Therefore, we need to improve the formula to avoid the initial capacity attenuation and delay the softening speed of the active material.