Detailed explanation of the development direction of new lithium batteries

Technological development has made the capacity of lithium batteries continue to expand, but with that comes the extension of the charging time and higher requirements for the charging speed. The slow charging time of the current mainstream electric vehicle lithium battery is between 5 to 10 hours, and the fast charging can overflow within 1 to 2 hours, but long-term use will affect the life of the lithium battery. The fastest Tesla super power station in the world can charge 80% in only 40 minutes, but this is nothing compared to nano-lithium batteries. Nanyang Technological University in Singapore has invented a new type of nanotube-based battery that can be charged 70% in 2 minutes and has a service life of up to 20 years. Traditional lithium batteries cannot be charged quickly. It is important for the safety of graphite electrodes to form an electrolyte membrane on the electrode surface during operation, which slows down the transportation speed of lithium ions. However, Nanyang Technological University uses titanium dioxide nanotube gel to replace graphite, which can accelerate the chemical reaction and shorten the charging time. 2. The biggest advantage of lithium-air battery is its high energy density. The current lithium battery energy density is only about 200Wh/kg, while the existing lithium-air battery has reached 500Wh/kg, and the theoretical limit is 12kWh/kg. , There is still great room for improvement. IBM is very optimistic about this technology and initiated the battery 500 project, which is to increase the cruising range to 500 miles (800 kilometers). 3. Lighter and safer Traditional lithium batteries use liquid electrolytes, while solid-state batteries have the same principle, except that the electrolyte is replaced by a solid state, which is usually a mixture of metals. The advantage of this design is that more charged ions can be concentrated together, conduct more current, while effectively reducing the size and weight of the battery, and the safety is better. Because liquid electrolytes have side reactions at high temperatures and are prone to explosions, solid lithium batteries do not have this problem. 4. Lower processing cost. The leading company in this category is 24M company founded by Professor Jiang Yeming. The semi-solid lithium flow battery can be said to be an improvement to the flow battery. Its electrode is made of a mixture of lithium compound particles and electrolyte. , The electrode thickness is 5 times more than that of the traditional lithium battery, which not only increases the energy density, but also reduces the inactive materials by 80%, thereby reducing the material cost. Compared with existing lithium batteries, new lithium batteries can reduce material costs by about 40% and shorten the manufacturing process to one-third. Compared with all-solid-state batteries, it has fewer technical problems, achieves high safety and high density, and is attracting attention. The new type of lithium battery has lower cost and higher specific energy. It is still in the development stage of basic research. It is expected that the new type of lithium battery will be commercialized in 2020, and the new system battery will be put into practical use in 2023. The new type of lithium battery has many characteristics and shows irreplaceable advantages in the use of portable electronic devices. New lithium batteries are the main force in developing energy technology and improving energy processing and utilization efficiency. With the increasing demand for new batteries in my country's rapidly developing economy, the Chinese government will continue to support the research and development of new batteries in terms of policies and funds. 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: Can lithium batteries be shipped by air?