According to the official website of Cambridge University in the UK on the 26th, researchers from the school pointed out in the latest issue of Nature that they recently determined that niobium tungsten oxide has a higher lithium passing speed and can be used to develop batteries that can be charged more quickly. Moreover, the physical structure and chemical behavior of the oxide helps them understand how to build a safe, ultra-fast rechargeable battery. The battery is mainly composed of three components: positive electrode, negative electrode and electrolyte. When the battery is charged, lithium ions flow out of the positive electrode and pass through the crystal structure and electrolyte to the negative electrode, where they are stored. The faster this process occurs, the faster the battery will charge. When looking for new electrode materials, researchers usually try to make the particles smaller, but it is difficult to make practical batteries containing nanoparticles: the electrolyte will produce more unnecessary chemical reactions, so the battery life is not long, and Manufacturing costs are also high. The niobium-tungsten oxide used in the latest research has a hard and open discharge structure, it does not capture the inserted lithium, and the particle size is larger than many other electrode materials. Kent Griffiths, the first author of the study and a postdoctoral researcher in the Department of Chemistry at Cambridge University, explained: "Many battery materials are based on the same two or three crystal structures, but these niobium-tungsten oxides are fundamentally different. The oxides pass through oxygen ' The 'pillars' remain open, allowing lithium ions to pass through them in three dimensions, which means more lithium ions can pass through them and are faster. Measurements also show that the rate at which lithium ions pass through oxides is less The electrode material is several orders of magnitude higher. " In addition to high lithium mobility, niobium-tungsten oxide is also easy to manufacture. Griffith said: "Many nanoparticle structures require multiple steps to synthesize, but these oxides are easy to manufacture and do not require additional chemicals or solvents." At present, most negative electrodes in lithium-ion batteries are made of graphite. Graphite has a high energy density, but when charged at a high rate, elongated lithium metal fibers called "dendrites" tend to form, which can cause short circuits. It also caused the battery to catch fire and even explode. Griffith said: "In high-magnification applications, safety is more important than any other operating environment. For fast charging applications that require safer graphite alternatives, these materials and other similar materials are definitely worthy of attention. " Bluetooth Light,Light Bluetooth Indoor,Portable Bluetooth Light,Lights Night Bluetooth Shenzhen You&My Electronic Technology Co., Ltd , https://www.szyoumy.com