Li-ion Batteries - Introduction of Silicon Make them Better?
The performance of these batteries needs to be considerably improved to keep the promise of a better and fossil-fuel free world of tomorrow. Researchers from Stanford University claim to have fixed most of the problems associated with traditional Li-Ion batteries, with the introduction of silicon into these batteries.
Silicon for long has shown its potential in solar cells, but its introduction in Li-Ion batteries was pulled back by one major drawback – silicon expands too much during ion insertion, rendering the battery unstable. Traditional Li-Ion batteries work on the movement of lithium ions from anode, which mostly is made of graphite to the cathode. The graphite material ensures no volume change during ion transfer, but the overall capacity of the battery is limited and it finally limits possibilities of next-gen devices and cars.
This new research overcomes the drawbacks of both graphite and normal silicon with the use of a nanostructured form of silicon dubbed the core-shell structure.
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Silicon for long has shown its potential in solar cells, but its introduction in Li-Ion batteries was pulled back by one major drawback – silicon expands too much during ion insertion, rendering the battery unstable. Traditional Li-Ion batteries work on the movement of lithium ions from anode, which mostly is made of graphite to the cathode. The graphite material ensures no volume change during ion transfer, but the overall capacity of the battery is limited and it finally limits possibilities of next-gen devices and cars.
This new research overcomes the drawbacks of both graphite and normal silicon with the use of a nanostructured form of silicon dubbed the core-shell structure.
More from here
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