Application of iron doped nickel diselenide microflowers as anode active material of rechargeable room-temperature magnesium battery
A positive electrode active material, nickel diselenide technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as limited performance improvement space, improve magnesium storage capacity and battery life, increase reaction sites, process simple effect
Active Publication Date: 2017-09-15
WUHAN UNIV OF TECH
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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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Embodiment 1
[0026] A high-capacity and long-life rechargeable room-temperature magnesium battery, as Figure 8 , consisting of a positive electrode shell 1, shrapnel 2, gasket 3, current collector 4, active material 5, separator 6, magnesium sheet 7, negative electrode shell 8 and insulating seal ring 9, in which the current collector 4 carrying active material 5 It is a positive pole piece, the magnesium piece 7 is a negative pole piece, the separator 6 is an insulator and soaked in electrolyte, and an insulating sealing ring 9 is arranged between the positive pole shell 1 and the negative pole shell 8 .
[0027] In this embodiment, the positive electrode shell and the negative electrode shell are 304 stainless steel shells; the shrapnel and the gasket are 304 stainless steel sheets; the current collector is molybdenum foil; the active material is iron-doped nickel diselenide micron flower; the diaphragm is glass fiber paper; The negative electrode is magnesium sheet; the insulating seal...
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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 [0001] 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 [0002] 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 wit...
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IPC IPC(8): H01M4/36H01M4/58H01M10/054
CPCH01M4/362H01M4/581H01M10/054Y02E60/10
Inventor 安琴友周丽敏麦立强
Owner WUHAN UNIV OF TECH