According to the latest research released this week, future batteries may have twice or even triple the power capacity of current standard lithium-ion batteries. For ordinary users, this means that the smartphone can last for several days. More importantly, it will not sacrifice the service life of the battery, and the volume will be further reduced.
A team from the University of Texas at Austin found that several metal oxides have physical energy storage capabilities beyond theoretical limits. At present, the standard method of battery energy storage is to let lithium ions move in the material, or convert the crystal structure of the material.
With these metal oxides, the energy can be stored not only in the transition metal oxides, but also on the surface of the reduced metal nanoparticles formed during the low potential discharge of transition metal oxide LIBS.
In an interview with SciTech daily, Guihua Yu, an associate professor at the walker Department of mechanical engineering at the University’s Cockrell School of engineering, said: “this important result is achieved by technologies that physicists often use but rarely use in the battery industry. It’s a perfect combination of physics and electrochemistry. “
Yu pointed out that the method is in-situ magnetic measurement. This is the most basic real-time magnetic monitoring system. Through this system, the change of magnetism in the internal electronic structure of the material is monitored, which helps to quantify the charge capacity of the material. The results show that the charge capacity on the surface of some materials is the main source of the battery capacity exceeding the standard. This additional surface capacitance exists in the systems of Fe ₃ o ₄, NiO, FEF Κ and Fe Κ n.
Extra storage capacity in transition metal oxide lithium ion batteries revealed by in situ magnetometry
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