The United States develops magnesium solid-state batteries, energy density and material costs are better than lithium-ion batteries

Although lithium-ion batteries are the main force of energy storage today, there are still many research groups and manufacturers trying to find more stable and effective energy storage technologies than lithium-ion batteries. The National Renewable Energy Laboratory (NREL) of the US Department of Energy has recently successfully developed Magnesium solid-state battery is produced, and the battery prototype has better energy density and material cost than lithium-ion batteries. Theoretically speaking, battery ions can flow between the positive and negative electrodes through the electrolyte, and power the battery through the electrochemical reaction, and the reaction must be reversible, otherwise the battery cannot be charged, but the carbonate electrolyte in the magnesium battery is It is easy to form a barrier layer on the surface of magnesium during charge-discharge cycles, hindering battery charging. Although magnesium can also be charged and discharged through a highly corrosive liquid electrolyte, if a corrosive electrolyte is used, the magnesium battery will not be able to operate at high voltage, and there are also safety concerns. At present, researchers have successfully built a prototype of a magnesium solid-state battery. The study also pointed out that the protected magnesium anode can also be charged in a carbonate electrolyte and can supply more energy. In addition, the research team has successfully developed a rechargeable magnesium battery, and also provided a treatment method for the incompatible anode and electrolyte, and solved the limitation of the cathode to ions.