Application of nano black phosphorene in magnesium ion battery negative electrode material

Abstract

The invention discloses an application of nano black phosphorene in a magnesium ion battery negative electrode material. The slice thickness of the nano black phosphorene is less than or equal to 10nm, and the slice size is less than or equal to 500nm. The invention discloses the application of nano black phosphorene in the magnesium ion battery negative electrode material for the first time, andthe nano black phosphorene is used as the negative electrode material of the magnesium ion battery, so that the magnesium ion battery is liberated from the dilemma that a traditional conventional simple ion salt / organic electrolyte system cannot be used, and the possibility is provided for further developing a high-voltage positive electrode material and improving the high-energy density of the magnesium ion battery.

Description

technical field [0001] The invention relates to the technical field of magnesium ion batteries, in particular to the application of nanometer black phosphorene in negative electrode materials of magnesium ion batteries. Background technique [0002] In recent years, traditional fossil energy is becoming exhausted, and human demand for energy is increasing. At the same time, the use of traditional fossil energy causes serious environmental pollution. Human future energy systems are facing severe challenges. Finding and developing clean and renewable energy is a top priority. At present, new energy sources with application potential include hydrogen energy, biomass energy, nuclear energy, wind energy, and solar energy. However, at present, it is still difficult to efficiently convert and store various renewable energy sources. Therefore, in order to realize the effective utilization of renewable energy, it is necessary to develop convenient and efficient new energy storage te...

AI Technical Summary

Problems solved by technology

As a negative electrode material for lithium-ion and sodium-ion batteries, nano-black phosphorus has been reported and applied. The high density makes the magnesium ion have a strong Coulomb interaction with the electrode material, causing the magnesium ion to diffuse slowly in the electrode material, resulting in poor or even poor performance of most lithium / sodium ion battery materials when used as magnesium ion battery materials. electrochemically active

At present, only a few alloy-type anode materials such as Bi, Bi-Sb, Sn, Pb, Bi-Sn, and Ga-Mg have been reported to have the reversibility of intercalation / extraction of magnesium ions, and the electrochemical specific capacity and cycle performance remain the same. Unable to meet the demand, black phosphorus and black phosphorene are emerging two-dimensional materials, and the electrochemical activity of magnesium storage in the anode materials of magnesium ion batteries has not been reported.

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