Zinc-nickel static single fluid flow battery

Abstract

A copper nickel statical single fluid stream battery is composed of a battery pile coupled by multi-section of battery monomers, electrolyte, a battery container and a sediment tank, wherein the battery monomers comprise a nickel electrode anode, a cathode current collector of the sediment zinc, a baffle plate and a liquid injection cover. The cathode active materials are dissolved and stored in the electrolyte, and two battery monomers of the series battery pile are connected in series by the positive and negative electrode connectors. In the charging and discharging processes, the active material dissolvable zinc salt in the electrolyte is converted with the metallic zinc on the cathode current collector backwards and forwards. The invention eliminates the solution storage tank and the liquid pump in the traditional fluid stream battery, realizes the dynamic loop of the active materials in the inner of the battery electrolyte, with small volume, high working pressure, long service life, convenient carrying, which is suitable to be used as the movable power with low cost.

Description

Technical field [0001] The invention relates to a method for preparing a zinc-nickel static single flow battery. Background technique [0002] Alkaline secondary zinc-nickel batteries have high specific energy, cheap raw materials, no mercury and cadmium, etc., which do not cause pollution to the environment, which has attracted widespread attention. Especially in electric vehicles, electric bicycles and portable appliances, zinc-nickel batteries are power sources with great application potential and ideal use value. However, the development and utilization of zinc-nickel batteries are severely restricted by the problems of dendrite growth, dissolution corrosion and electrode deformation of zinc electrodes. Therefore, how to overcome the above-mentioned problems and prepare a new type of zinc-nickel battery with a long cycle life is an urgently needed problem. [0003] Flow battery is also called flow redox battery. The core of its technology is to carry out redox reaction, and t...

AI Technical Summary

Problems solved by technology

Its capacity is still limited by the surface area of ​​the negative electrode current collector and the effective space of the single battery, so the size of the liquid storage tank has no real significance for the increase of battery capacity

In this patent, carbon materials, metal foils, metal plates or foam materials are used for the negative electrode current collector. Current research shows that these materials are likely to cause metal zinc powder to fall off during the zinc electrodeposition process, resulting in a decrease in battery discharge capacity. decrease, the cycle performance of the battery deteriorates, and even causes problems such as short circuit

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