18650 rechargeable battery lithium 3.7v 3500mah

　　18650 rechargeable battery lithium 3.7v 3500mah have made new breakthroughs

　　18650 rechargeable battery lithium 3.7v 3500mah are electronic products that everyone is very familiar with and are currently widely used in mobile phones, laptops, electric vehicles and other products. However, the reputation of 18650 rechargeable battery lithium 3.7v 3500mah is also hampered by long charging times and short service life. Recently, a research team from Nanyang Technological University in Singapore invented a new type of fast-charging 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.

　　18650 rechargeable battery lithium 3.7v 3500mah are mainly composed of positive electrode materials (such as lithium cobalt oxide), electrolyte and negative electrode materials (such as graphite). Whenever charging, lithium ions are detached from the lithium cobalt oxide lattice of the cathode material, and are embedded in the layered graphite after passing through the electrolyte; when discharging, lithium ions are detached from the lattice of the layered graphite, and are embedded in the layered graphite after passing through the electrolyte. Lithium cobalt oxide. During the battery charging and discharging process, lithium ions transfer back and forth between the positive electrode and the negative electrode, so 18650 rechargeable battery lithium 3.7v 3500mah are also vividly called "rocking chair batteries." In recent years, scientists have paid great attention to new 18650 rechargeable battery lithium 3.7v 3500mah, especially high-capacity lithium-sulfur, The research and development of lithium-oxygen batteries and nano-silicon batteries are booming, but due to complex synthesis processes, high costs, short cycle life and other reasons, many results have not been popularized.

　　Traditional lithium-ion batteries cannot be charged quickly, mainly due to the safety performance of graphite electrodes. When the battery is working, a solid electrolyte film will be formed on the surface of the electrode, blocking the "footstep" of lithium ions, thereby slowing down the transportation of lithium ions. Speed. The innovation of the newly invented new lithium battery is that it uses ultra-long titanium dioxide nanotube gel instead of traditional graphite material as the battery negative electrode. This new material does not form an electrolyte membrane, and lithium ions can be quickly embedded, thereby Achieve fast charging effect. At the same time, thanks to the special structure of one-dimensional titanium dioxide nanogel, the new battery has achieved a breakthrough in lifespan, with a cycle number of up to tens of thousands. Assuming that it is charged once a day, it can be used for more than 20 years. Moreover, this The titanium dioxide (commonly known as titanium dioxide) used in the institute has low raw material cost and is easy to process. The battery has good repeatability and high reliability, and can be seamlessly integrated with existing processes. Its industrial application prospects are very bright.

　　18650 rechargeable battery lithium 3.7v 3500mah appeared in the 1970s. In 1991, Sony released the first commercial lithium battery, which has since revolutionized consumer electronics. Although 18650 rechargeable battery lithium 3.7v 3500mah are used more and more widely, their endurance and service life have not been effectively breakthrough, which has also restricted the rapid development of industries such as electric vehicles. This new technological breakthrough will have a wide impact on 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 can the charging time be reduced from the original few hours It is shortened to a few minutes, and users do not need to frequently replace expensive battery packs (costing about US$10,000), which brings benefits to the further popularity of electric vehicles.

　　However, a bottleneck faced by the current development of 18650 rechargeable battery lithium 3.7v 3500mah is that if you want to increase the capacity, you must sacrifice charging speed and cycle life, and it is difficult to maintain a high capacity when increasing the charging speed. In the future upgrading of batteries, on the one hand, it is necessary to improve safety performance, such as research on solid and semi-solid electrolytes. On the other hand, it is necessary to accelerate the development of large-capacity cathode materials to achieve a breakthrough in energy density of 18650 rechargeable battery lithium 3.7v 3500mah. In short, the positive and negative electrodes and electrolyte materials of the battery need to be developed in tandem, so that greater progress can be made in terms of form, capacity, etc.

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