A novel dual-ion intercalation organic flow battery

Abstract

The invention discloses a novel dual-ion embedded organic redox flow battery. The redox flow battery comprises a positive pole plate, a negative pole plate, a positive current collection plate, a negative current collection plate, a positive reaction cavity, a negative reaction cavity, an electrolyte, a positive electrode transmission pipe / transmission pump, a negative electrode transmission pipe / transmission pump and a separator material and is characterized in that the separator material is arranged between the positive reaction cavity and the negative reaction cavity, and the positive poleplate and the negative pole plate are of porous graphite film materials. Compared with a traditional aqueous electrolyte redox flow battery and a lithium ion redox flow battery, the novel dual-ion embedded organic redox flow battery disclosed by the technical scheme employs a dual-ion embedment mechanism, the working voltage is larger than 4V, a lithium transition metal oxide-containing positive active material, a positive electrolyte storage tank, a negative electrolyte storage tank, a positive conductive agent, a negative conductive agent, a binding agent and a current collector are prevented from being used, the charge-discharge circulation frequency and the energy density are greatly improved, the cost is reduced, meanwhile, the problem of cross pollution of a positive electrolyte anda negative electrolyte is solved, the preparation process is simple, and mass production is easy.

Description

technical field [0001] The invention belongs to the technology of electrochemical energy storage batteries, and specifically designs an organic double-ion embedded flow battery. Background technique [0002] The increasing energy crisis and environmental problems have accelerated the rapid development of the new energy industry. Under the current situation, the environment-friendly electrochemical energy storage technology that maximizes green energy supply and low-carbon energy conservation and emission reduction has attracted more and more attention. Recently, the state has proposed to establish a near-zero carbon emission project based on the Energy Internet, the core content of which includes renewable energy power generation, distributed energy storage technology, etc., which puts forward higher requirements for new high-efficiency energy storage technologies. [0003] In recent years, large-scale energy storage represented by flow batteries has made great progress. T...

AI Technical Summary

Problems solved by technology

Most of the positive electrode materials are transition metal oxides containing lithium, and the negative electrodes are mostly graphite materials. During repeated charging and discharging, the lithium-containing metal oxides have poor cycle performance (<1000 times) and are prone to structural changes. In recent years Due to the tight supply of lithium, cobalt and other resources, the cost of positive electrode materials has risen sharply; in addition, the positive and negative electrode suspensions require two storage tanks for storage, which greatly increases the weight of the battery and reduces the energy density of the battery (<300Wh / L) , increasing the cost

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