A new type of magnesium-based dual-ion battery that uses traditional negative electrode materials on the positive electrode

The large-scale application of lithium batteries has also increased the demand for materials, but the storage of lithium ore is limited, and it is difficult to meet the large-scale layout in the future. So scientists turned to other low-cost materials. Recently, the Shenzhen Advanced Institute of Chinese Academy of Sciences has developed a new type of magnesium-based dual-ion battery. Unlike traditional lithium-ion batteries, graphite is usually used as its negative electrode material in traditional lithium-ion batteries, but magnesium-based dual-ion batteries use graphite materials on the positive electrode. However, the research of magnesium ion batteries is still in its infancy, and there is still a long way to go before commercial use, and there are still technical problems that need to be overcome. In single-ion batteries such as lithium-ion batteries, the lithium ions in the electrolyte will move between the positive and negative electrodes, shaking back and forth like a rocking chair. In dual-ion batteries, the cations and anions in the electrolyte simultaneously move to the negative electrode material and the positive electrode material, and an electrochemical oxidation-reduction reaction occurs, thereby realizing charge and discharge. At the same time, it is found that the magnesium-based dual-ion battery has excellent rate performance and cycle performance. The high rate charge and discharge capacity retention rate at 20C is 85%, and the capacity retention rate after 500 cycles at 5C rate is 95.7%. The new type of magnesium-ion battery provides new ideas for the future of lithium batteries, and has strong application prospects in the field of large-scale energy storage in the future. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete it. Previous post: Why does the lithium battery have a smaller capacity as it is used?