Zinc-deposition type liquid flow energy-storage battery system and running way thereof

Abstract

The invention relates to a liquid flow energy-storage battery system which consists of a deposition-type zinc negative pole, negative electrolyte, a negative pole storage tank, a positive pole, positive electrolyte, a positive pole storage tank, a liquid pump, a pipeline and a control system. The negative electrolyte is charging state electrolyte and discharging state electrolyte; an acid solution containing zinc ions can be adopted in charging, and an alkaline zincate solution is adopted in discharging; the electrolytes can be sent into the battery from the storage tanks through the pipeline by the liquid pump; and the liquid flow battery system has the advantage that the actual voltage efficiency is more than 100%.

Description

technical field [0001] The invention relates to a liquid flow energy storage battery system, in particular to a zinc deposition type liquid flow energy storage battery system and its operation mode. technical background [0002] With the development of human economy and society, the demand for energy is increasing, which makes the pressure of fossil energy security increasing; and the process of fossil energy conversion produces many environmental problems: for example, the emission of nitrogen and sulfur oxides causes acid rain, Emissions of greenhouse gases accelerate the process of global warming. Therefore, developing renewable energy, expanding its proportion in the energy structure, and improving energy efficiency will promote sustainable social development. [0003] As a clean and efficient secondary energy source, electric energy is closely related to the daily production and life of human beings. The ever-increasing demand for electric energy and the requirements f...

AI Technical Summary

Problems solved by technology

However, under alkaline conditions, the problem of zinc dendrites is serious during charging and a passivation film is easily formed on the surface of the zinc deposition layer, which affects the actual service life and energy density of the battery, and an excessively high charging voltage poses a problem for the corrosion resistance of electrode materials. higher requirement

However, due to the relatively high equilibrium potential under acidic conditions, the battery energy density is low, which cannot meet the development needs of high energy density batteries.

Images