Application status and development background of high-voltage lithium-ion batteries

As the voltage increases, high-voltage lithium-ion batteries will gradually mature. Improve the compaction density and gram capacity of battery positive and negative materials. At present, manufacturers of mobile phones and other digital electronic products at home and abroad are moving in the direction of high-voltage lithium-ion batteries. Some safety performance will be affected during use. reduce. The cut-off voltage has developed from 4.2V to 4.3V and 4.35V. The application status of high-voltage lithium-ion batteries. Generally speaking, high-voltage lithium-ion batteries refer to batteries with a single charging cut-off voltage higher than 4.2V. In order to increase energy density to meet demand, 4.45 V and 4.5V have also begun to be favored by the market. At present, 4.35V and 4.4V lithium-ion batteries have been maturely used in the market. Therefore, they have not been used in batches in power vehicles. Among them, 5V nickel-manganese lithium-ion batteries have high energy density and high energy density. With the continuous development of power supply research and development technology, the cut-off voltage of lithium-ion batteries is gradually transitioning from 4.2V to 4.35V, 4.4V, 4.45V, 4.5V and 5V. The use of highly conductive carbon nano And polymer binders to increase the positive and negative active material content. In the future, higher voltage and higher energy density lithium-ion batteries will gradually come out of the laboratory. The background of the development of high-voltage lithium-ion batteries In order to design high-energy-density lithium-ion batteries, increasing the working voltage of lithium-ion batteries is also increasing the energy density of the batteries. One of the important ways to achieve 4.4V (Millet phones, Huawei phones, etc.). At present, the battery cathode materials used in power vehicles are still mainly based on ternary materials and lithium iron phosphate. It will be one of the important directions for the development of new energy vehicles and energy storage in the future. Among them, modified high-voltage lithium cobalt oxide, high-voltage The use of ternary materials will be more mature and common. Cathode materials and electrolytes are key materials to increase the high voltage of lithium-ion batteries. To serve consumers, generally choose high nickel cathode materials such as 811NCM and NCA, high-capacity silicon carbon anode, or improve the utilization of battery space to improve its energy density and endurance. High-voltage and high-energy density lithium-ion batteries are used in There will be more market space for high-end mobile phones and portable electronic devices. Such as: Li-ion batteries used in mobile phones, in addition to continuous optimization of its space utilization. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete.