Methods to improve the safety and energy density of lithium batteries

Improve the safety and energy density of lithium batteries Three days ago, the U.S. Department of Energy’s Argonne National Laboratory announced that scientists are using oxidative chemical vapor deposition technology to develop a new cathode coating that can help solve lithium batteries Several potential problems. The new coating is expected to be put on the market. The new PEDOT coating has the ability to penetrate the inside of the cathode particles and adds a new rated shielding layer, while the traditional coating can only maintain the appearance of the cathode particles. The well-known Argonne researcher and battery scientist KhalilAmine said that this new coating may be put into commercial use in the next few years. According to data from the global information provider IHSMarkit, as the number of global energy storage facilities continues to increase, it is expected that 4.3 GW of grid-connected energy storage capacity will be added this year. However, scientists have discovered that this new coating may be able to solve the most worrying problems in battery storage operations, density and safety, which may lead to the flourishing of energy storage stores around the world. New coatings can kill two birds with one stone. It is obvious that the safety of batteries has always been one of the keys to scientists' research, but it is pressure that keeps momentum. The explosion of battery equipment in the past two years has undoubtedly accelerated the operation of batteries in this area. After two years of research and optimization, argonne said, a coating has emerged that prevents the chemical reaction between the battery and the electrolyte, allowing all other processes to work without interference. In this study, particles were initially extracted from NMC cathode data and then wrapped in a sulfur-containing polymer called PEDOT. When the battery is charged and discharged, the polymer provides a layer of maintenance for the cathode, protecting it from the battery electrolyte. Xu Guiliang, a chemist at the Argonne Laboratory, said: This coating is basically friendly to all processes and chemical processes that make the battery work, and it is also friendly to all reactions that may cause battery degradation or defects. The scientists also found that the PEDOT coating inhibits the release of oxygen during the charging process, thereby making the structure more stable and further adding safety. By deceiving the energy density of lithium batteries, the new cathode coating PEDOT is expected to reduce the overall cost of the battery, thereby ending large-scale electrification. Researchers believe that with this coating, lithium batteries containing nanomaterials can work at higher voltages, increase energy output, or last longer, or both. At the same time, argonne also solved another important issue related to lithium batteries: comparative verification of performance. Evaluating whether the change of electrode or electrolyte data is an improvement means a comparison of test results, but there is no standard test method for lithium batteries. Engineers and researchers often develop their own programs to describe the characteristics of lithium batteries, which are based on the expected use of their skills. This makes any comparison of skill differences very confusing. In order to solve this problem, the argonn laboratory worked with the University of Warwick, OVOEnergy, the National Power Research Institute of Hawaii and Jaguar Land Rover to review the literature on various verification methods for lithium batteries around the world to provide insights on best practices. The laboratory hopes that our research results will one day provide more reliable and comparable test methods for different purposes of lithium batteries. 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: Analysis of safety protection of lithium batteries in UPS applications