Recently, a research team from Nanyang Technological University in Singapore invented a new type of fast rechargeable battery that can charge 70% in 2 minutes and has a service life of up to 20 years, which is 10 times the service life of current batteries.

　　Lithium batteries are very familiar electronic products and are currently widely used in mobile phones, notebook computers and electric vehicles. However, the reputation of lithium batteries is also hampered by chronic problems such as long charging time and short service life. Recently, a research team from Nanyang Technological University in Singapore invented a new type of fast rechargeable battery that can charge 70% in 2 minutes and has a service life of up to 20 years, which is 10 times the service life of current batteries.

　　Lithium batteries are mainly composed of positive electrode material (such as lithium cobalt oxygen), electrolyte and negative electrode material (such as graphite). When charging, lithium ions are extracted from the lithium cobalt-oxygen lattice of the positive electrode material, and then embedded in the layered graphite after passing through the electrolyte; during discharge, the lithium ions are extracted from the lattice of the layered graphite and inserted into the layered graphite after passing through the electrolyte. Lithium cobalt oxygen. In the process of battery charging and discharging, lithium ions are transferred back and forth between the positive and negative electrodes, so lithium batteries are also vividly called "rocking chair batteries." In recent years, scientists have shown a blowout in the research and development of new lithium batteries, especially high-capacity lithium-sulfur, lithium-oxygen batteries, and nano-silicon batteries. However, due to complex synthesis processes, high costs, and short cycle life, many results have failed. Gain popularity.

　　Traditional lithium-ion batteries cannot be quickly charged, mainly due to the safety performance of graphite electrodes, and a solid electrolyte film is formed on the surface of the electrodes when the battery is working, which blocks the "footsteps" of lithium ions and slows down the lithium ion Transport speed. The innovative point of the newly invented new lithium battery is that it uses ultra-long titanium dioxide nanotube gel instead of traditional graphite materials as the battery negative electrode. This new type of material does not form an electrolyte membrane, and lithium ions can be quickly inserted to achieve a fast charging effect. At the same time, thanks to the special structure of the one-dimensional titanium dioxide nanogel, the new battery has achieved a breakthrough in life, with the number of cycles reaching tens of thousands. Assuming that it is charged once a day, it can be used for more than 20 years. Moreover, the titanium dioxide (commonly known as titanium dioxide) used in this research has low raw material cost and is easy to process, the battery has good repeatability, high reliability, and can be seamlessly connected with existing processes, and its industrial application prospects are very bright.

　　Lithium batteries appeared in the 1970s. In 1991, Sony released the first commercial lithium batteries, which has since revolutionized the face of consumer electronics. Although lithium batteries have become more widely used, their endurance and service life have not been effective breakthroughs, which also restricts the rapid development of electric vehicles and other industries. This new technological breakthrough will have a wide range of impacts in many fields. In the field of mobile devices, new batteries can avoid the "forced obsolescence" of some electronic devices; the field of electric vehicles will also benefit greatly, not only the charging time can be reduced by the original number of times. Hours are shortened to a few minutes, and users do not need to frequently replace expensive battery packs (costing about 10,000 US dollars), which has brought benefits to the further popularization of electric vehicles.

　　However, a bottleneck facing the development of current lithium batteries is that if you want to increase the capacity, you must sacrifice the charging speed and cycle life, and it is difficult to maintain a higher capacity when the charging speed is increased. In the future, the replacement of batteries will require improved safety performance, such as research on solid and semi-solid electrolytes, and on the other hand, the need to accelerate the development of large-capacity cathode materials to achieve breakthroughs in the energy density of lithium batteries. In short, the positive and negative electrodes of the battery and the electrolyte materials need to be developed in concert, so as to be able to make greater progress in terms of form and capacity.