Communications of the ACM
New Class of Materials Could Make Batteries Charge Faster
Cambridge University researchers have identified materials that could be used to make higher-powered batteries.
Credit: Ella Maru Studio
Researchers at Cambridge University in the U.K. have identified a group of materials that could be used to make higher-powered batteries.
The team found lithium ions move through materials with a complex crystalline structure at rates that far exceeded those of typical electrode materials.
Although the materials, called niobium tungsten oxides, do not result in higher energy densities when used under typical cycling rates, they are useful for fast charging applications.
In addition, the materials' physical structure and chemical behavior provide valuable insight into how a safe, super-fast-charging battery could be constructed.
The niobium tungsten oxides have a rigid, open structure that does not trap inserted lithium, and they have larger particle sizes than many other electrode materials.
Cambridge's Kent Griffith says these oxides are very easy to make and do not require additional chemicals or solvents.
From University of Cambridge
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