Silicon sawdust can be used for the production of batteries

When large sheets of silicon cut individual silicon wafers for electronics applications, there is a lot of sawdust. Typically, this material is just thrown away. However, through research, are currently Japan, the universities of Tohoku and Osaka, this sawdust can be used in the manufacture of high-performance lithium-ion batteries.





The researchers removed the impurities from the silicon sawdust and then shredded them in a porous "nanohole" with a thickness of about 15 nanometers. These flakes coated with carbon and included in the battery anode.

When testing rechargeable Li-ion battery with this anode showed a capacity of 1200 mAh/g after 800 cycles charging/discharging in other words, the capacity of this battery was 3.3 times greater than the capacity of the same battery with a conventional graphite anode.





According to the researchers, the recycling process is easy to scale for mass production, the cost of such anodes must be sufficiently small. In addition, scientists estimate that the number of annually produced silicon sawdust should be enough to satisfy global demand for anode material. published

 

P. S. And remember, only by changing their consumption — together we change the world! ©

Source: ecotechnology