Could this grain-sized microbattery live up to future expectations?
They developed an on-chip Swiss-roll-style microbattery. By combining the Swiss-roll structure with an electrode slurry, the team opened doors for high-energy-density micro batteries to enter the sub-square-millimeter era.
The result is a micro-Swiss-roll of 3 mm in length and about 178 µm in diameter- much smaller than a grain of rice. The development is an encouraging result for a solution for constructing sub-millimeter-sized devices. Still, one problem with standard electrode slurries is in their drying periods - which can be more than 10 hours. And in addition to this time consideration, the temperatures needed are as high as 120°C, which can destroy the microstructure. A quicker drying period is therefore desired.
While this may sound like something for the distant future, some scientists are currently working to create such microscopic devices.
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