Application of iron-doped nickel diselenide microflowers as cathode active material for rechargeable room temperature magnesium batteries

Abstract

The invention relates to novel energy magnesium batteries, and in particular to application of iron doped nickel diselenide microflowers as an anode active material of a rechargeable room-temperature magnesium battery. According to the application of the iron doped nickel diselenide microflowers as the anode active material of the rechargeable room-temperature magnesium battery, the active material is loaded on a current collector of the rechargeable room-temperature magnesium battery. The application has the advantages that the rechargeable room-temperature magnesium battery is high in specific capacity (182mAh g<-1>), long in service life (the battery still has 150mAh g<-1> after being circulated for 100 circles under the current of 20mA g<-1>, and the capacity retention rate is 98.7% by 20 circles in a stable state), and appropriate in voltage (1.1V). A preparation method is simple in process and easy to implement, and a completely novel idea is provided for further development of magnesium batteries. The capacity and the service life of the magnesium battery meet new levels, and thus the magnesium battery has the potential of being applied to a new generation of power batteries.

Description

technical field The invention relates to new energy magnesium batteries, in particular to the application of iron-doped nickel diselenide micron flowers as positive electrode active materials for rechargeable room temperature magnesium batteries. Background technique With the advancement of science and technology, people's demand for energy is increasing day by day. Traditional energy is limited by environmental pollution and low utilization rate, making it inevitable to develop and explore suitable new energy storage systems. In the past 20 years, lithium-ion batteries have been commercialized and widely favored in portable electronic devices, smart grids, and hybrid electric vehicles. However, it faces problems such as shortage of lithium resources, high price, potential safety hazards, and the volumetric energy density is difficult to meet large-scale energy storage. Therefore, it is imminent to seek a new sustainable energy storage system. Compared with lithium, the c...

AI Technical Summary

Problems solved by technology

For layered chalcogenide materials, people have improved the magnesium storage performance by increasing the battery test temperature or increasing the layer spacing, but these methods have limited room for performance improvement. To explore the role of conversion materials with high capacity in magnesium batteries application imperative

At present, there are few studies on conversion materials, and there is no report on the optimization and improvement of materials to improve the performance of magnesium storage.

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