Sand grain chemically plated metal pole plate and preparation method thereof

Abstract

The invention discloses a sand electroless plating metal polar plate and a preparing method thereof. The polar plate comprises copper plated sand in a graininess shape, resourceful sand serves as the core of the polar plate, optimized sand grains serve as forming carriers, electroless copper plating is carried out on the surface of the sand after activation and sensitization to form the copper plated sand, the reacting dose participating in a storage battery is used as the criterion of the plating layer thickness, the copper plated sand is directly packaged or packaged after pretreatment through a packaging bag, a metal barrier and a packaging box to form the polar plate, and the copper plated sand grains accumulate to form a macroporosity space structure to be applied to the environments of a lead-acid storage battery, an alkaline storage battery and a dry battery as a current collector. The copper sand is made of the sand through electroless copper plating, the technology is simple, conductivity is high after copper plating, the sand is rich in resource, as the sand grains are different in size, people have many choices when using the sand grains for manufacturing the polar plate, the grain porosity is large, the pore number per unit area is larger than that of foamy copper, the plasticity is higher, the manufacturing cost is low, and the sand electroless plating metal polar plate can be widely used for the technical field of electrochemistry storage batteries.

Description

technical field [0001] The invention relates to the technical field of storage batteries, in particular to a sand grain chemically plated metal plate and a preparation method thereof. Background technique [0002] Lead-acid batteries are currently the world's most mature technology, cheapest, stable performance, high voltage, large current, and the most abundant raw materials. However, lead-acid batteries have disadvantages, such as short life and limited number of cycles. The reason is: the lead grid of the positive plate cannot withstand the erosion of oxidation during charging and is broken, so it loses the function of supporting the active material and gathering current. After the lead sulfate is thickened, lead sulfate will be produced, forming a huge resistance, and the battery will not be able to charge and fail. This problem has not been effectively solved, and it is called lead sulfate. Since the zinc in the electrolyte needs to use the current collector as a depos...

AI Technical Summary

Problems solved by technology

[0002] Lead-acid batteries are currently the world's most mature technology, cheapest, stable performance, high voltage, large current, and the most abundant raw materials. However, lead-acid batteries have disadvantages, such as short life and limited number of cycles. The reason is: the lead grid of the positive plate cannot withstand the erosion of oxidation during charging and is broken, so it loses the function of supporting the active material and gathering current. After the lead sulfate is thickened, lead sulfate will be produced, forming a huge resistance, and the battery will not be able to charge and fail. This problem has not been effectively solved, and it is called lead sulfate. Since the zinc in the electrolyte needs to use the current collector as a deposition matrix to store active substances when charging, the properties of the current collector will directly affect the deposition of zinc on the current collector and the charge and discharge of the battery, but the zinc electrode There are problems such as deformation, zinc dendrites, self-corrosion and passivation, which affect the service life of the battery; although the plates made of foam metal can solve this problem well, the manufacturing process of foam metal is cumbersome. high cost