What are the advantages of magnesium batteries compared with lithium batteries?

If the development of lithium batteries encounters a bottleneck, then magnesium batteries may become a disruptor in the battery field. Although lithium batteries have almost occupied a leading position in consumer electronics, electric vehicles and other fields in the past 10 years, in the future, If our smartphones or other devices need longer battery life, then stronger batteries will appear as alternatives to lithium batteries. In addition, the cost of magnesium is 96% lower than that of lithium, and the use of magnesium batteries will greatly reduce production costs. . What are the advantages of magnesium batteries compared with lithium batteries? Magnesium battery Magnesium battery is a primary battery with magnesium as the negative electrode and certain metal or non-metal oxides as the positive electrode. Among the existing varieties, there are magnesium-manganese dry batteries that can be discharged at any time, similar to ordinary zinc-manganese dry batteries; there are also reserve batteries that can be stored for a long time in a dry state, and can be activated by adding water during temporary use. They are a type of lithium battery. A battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable. The structure of the magnesium manganese dioxide dry battery is similar to that of the cardboard zinc-manganese battery. The composition and ratio of the positive manganese dioxide carbon package are basically the same, and the negative electrode is a magnesium cylinder. Magnesium batteries have very high energy, and the unit of energy density reaches 800 watt-hours/kg. 1 kg of this new type of battery is equivalent to 30 times that of lead-acid batteries used in automobiles. The storage life of the magnesium storage battery can reach more than 10 years. It can be activated by adding clean water or sea water during temporary use on any occasion, and it can be used within half an hour after activation. The working voltage is very stable, and the service life is generally 0.5-24 hours. Lithium batteries can only be out of reach. Compared with lithium batteries, magnesium batteries have many advantages. For example, the melting point of lithium is about 180 degrees Celsius, and the melting point of magnesium is as high as about 650 degrees Celsius, so it is safer. In addition, the reserves of magnesium ore are much richer than lithium. However, the development of magnesium batteries also faces some technical difficulties. For example, no suitable cathode material has been found before, and the inability to charge and discharge steadily is also one of the problems. The biggest advantages of magnesium batteries compared to lithium batteries are the following points: 1. During the charge and discharge cycle of magnesium batteries, magnesium dendrites will not appear on the negative electrode. The growth of lithium dendrites in lithium batteries may pierce the diaphragm and cause short circuit fires and explosions in the battery. Dangerous; 2. The content of magnesium is more abundant than that of lithium, and the price is relatively cheap; 3. Compared with the simple substance of lithium, magnesium element has a higher melting point (648°C/1170°C), chemical properties are relatively inert, and easy to process; finally, China is the world China’s largest producer of primary magnesium, accounting for 70% of the global market. As the most important producer of primary magnesium in the world, China has ample primary magnesium production capacity, sufficient competition, and low prices compared to the international market. my country's primary magnesium producing areas are mainly distributed in Shanxi, Ningxia, Liaoning and other places. The above is the difference between magnesium battery and lithium battery. Because the performance-price ratio of magnesium battery is better than any previous battery, and it is safer and more environmentally friendly, it can replace the existing lithium battery products on the market and will become the market. Mainstream products. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Comparison of the advantages and disadvantages of fuel cells and lithium-ion batteries