Batteries Could Last 40% Longer by Switching to Silicon

When it comes to battery life, every mobile device needs plenty of it. Researchers have now discovered that future batteries can provide 40 per cent more power juice by simply switching the technology used, in favour of silicon.

Batteries supply power using electron migration from the anode towards the cathode. Graphite is the usual element chosen to build anodes for Li-Ion battery systems but it seems the element does not store much charge.

3M has discovered that replacing graphite with silicon when building anodes can increase battery charge with up to 40 per cent.

The corporation already implemented their ideas into new anodes made purely out of silicon and lithium alloy, which resulted in a 20 per cent increase in energy density when paired with usual cathodes. The maximum theoretical boost of 40 per cent was obtained by switching the common cathode to one built on high-energy technology.

The technology is expected to find its way in mobile devices like smartphones and tablets, as well as electric and hybrid vehicles.

Source: 3M