The performance of the battery is critical to the electronic device. Charging time is short, long duration, is the current widespread use of lithium-ion battery expectations. Recently, researchers from the US Department of Energy's Lawrence Berkeley National Laboratory and Stanford University collaborated to develop a new X-ray microscope (STXM) that closely observes particle activity during charge-discharge of lithium-ion batteries, This may help to develop more powerful lithium-ion batteries. In a paper published in the latest issue of Science, the team said they used the advanced light sources from Berkeley Labs to create a "Liquid Electron Microscopy Nano Imaging Platform" that can image 30 particles at a time. The researchers said the new platform has a larger field of view and greater penetration than the TEM used in the past, allowing users to observe some of the chemical-specific changes in real time. The team used the platform to observe the lithium iron phosphate particles in the charging and discharging process, imaging, detailed records of the particle chemical composition evolution and chemical reaction rate and so on. They found that the charge on the surface of the particles is not uniform and will get worse over time. In theory, when the battery is charging, the positively charged lithium ions evenly cover the surface of the electrode. However, in fact, this situation is very difficult to occur, especially after the battery is aged. The researchers said the new technology platform makes it possible for them to image real-time battery activity at the mesoscopic scale, which is difficult but important to do. With this technology, they have the ability to analyze changes in particle chemistry and current density in real time, investigate the battery charge-discharge process, and image the electrochemical reactions within a single cell particle, a better understanding of the battery charging mechanism And optimize the battery performance is very helpful. The team is currently designing a more accurate X-ray microscope with a target resolution of 1 to 5 nanometers. Cylinder And Scratch Board Dryer
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