According to the latest research released this week, batteries in the future may have twice or even three times the power capacity of current standard lithium-ion batteries. For ordinary users, this means that the battery life of the smartphone can reach several days. More importantly, the battery life will not be sacrificed, and the volume will be further reduced.
A research team from the University of Texas at Austin found that several metal oxides have physical energy storage capabilities beyond theoretical limits. Currently, the standard method for battery energy storage is to move lithium ions in the material or to change the crystal structure of the material.
With these metal oxides, energy can be stored either in the transition metal oxide or on the surface of the reduced metal nanoparticles formed during the low-potential discharge of the transition metal oxide LIBs.
In an interview with SciTech Daily, Guihua Yu, an associate professor from the Walker Department of Mechanical Engineering at the Cockrell School of Engineering, said: "This important result is a physicist It is often used, but obtained by technology that is rarely used in the battery industry. This is a perfect demonstration of the beautiful combination of physics and electrochemistry."
The method Yu pointed out is in-situ magnetic measurement. This is the most basic real-time magnetic monitoring system. Through this system, the change in magnetic properties in the internal electronic structure of the material to be monitored can help quantify the charge capacity of the material. The study shows that the charge capacity on the surface of certain materials is the main source of battery capacity exceeding the standard. This additional surface capacitance exists in Fe₃O₄, NiO, FeF₂, and Fe₂N systems.
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