Zincium electrode production method for zinc-nickel battery

Abstract

The invention discloses a method for manufacturing a zinc electrode of a zinc-nickel cell. A silver-plated foam nickel conductive framework is coated with 84 to 88 portions of zinc powder, 4 to 7 portions of calcium hydroxide, 0.5 to 1.0 portion of indium and 7 to 9 portions of adhesive which is a pasty active substance, is pressed and molded and is finally dried. The method has obvious function in habiting deformation of the zinc electrode and growth of dendritic crystal; with the method, as the hydrogen precipitation overpotential of silver is high, the hydrogen precipitation is inhibited to improve the charging efficiency of the zinc electrode; each part of the electrode has even density and thickness; the polarization potential and the electrodeposition efficiency have small difference; and the electrode is uneasy to deform so as to well inhibit the problem of rapid increase of the dendritic crystal of specific parts of the zinc electrode, thereby well solving the problems of deformation, the dendritic crystal and short service life of the zinc electrode. The cyclic life of the nickel-zinc cell is increased from 200 cycles to 350 cycles. The method solves the problem of difficult sealing of the zinc-nickel cell.

Description

Technical field: [0001] The invention relates to a method for manufacturing a long-life zinc-nickel battery zinc electrode, belonging to the technical field of the zinc-nickel battery zinc electrode. Background technique: [0002] Zinc-nickel batteries have the superior performance of the extremely high capacity of the zinc anode in the zinc-silver battery and the long life of the nickel electrode in the cadmium-nickel battery. The outstanding advantages of zinc-nickel batteries are: high specific energy, up to 50Wh / kg~80Wh / kg; large specific power, which can exceed 200W / kg; wide working temperature range, which can be normal between -20℃~+60℃ Work. The source of raw material is extensive, the cost is low, and will not cause environmental pollution. [0003] Its main disadvantages are mainly as follows: [0004] ① The charging and discharging cycle life is short. The zinc electrode is easily deformed during the cycle charge and discharge process, and the dendrites cause ...

AI Technical Summary

Problems solved by technology

[0004] ①The charge and discharge cycle life is short

[0005] ②Battery is not easy to seal

Oxygen will be generated on the nickel electrode during the charging process of the zinc-nickel battery, and hydrogen gas will be generated during the storage process of the battery, which will cause the internal pressure of the battery to rise and cause the battery to be difficult to seal