Scientists recover high purity metals from battery waste

London, June 6 (IANS) Finnish scientists have recovered important metals -- lithium, cobalt and nickel -- from battery waste with nearly 100 per cent purity.

Recovered metals could be used in the manufacture of batteries, and in the future especially in batteries of electric vehicles.

Researchers from Lappeenranta University of Technology (LUT) were able to extract cobalt at 99.6 per cent purity, nickel at 99.7 per cent purity, and lithium at 99.9 per cent purity from battery waste. 

"The manufacturing of new batteries requires metals of particularly high purity. If the purity of lithium is below 99.5 per cent, it is not suitable as raw material for batteries. In other words, the difference between 99.4 per cent and 99.9 per cent purity is very significant," said one of the researchers Sami Virolainen.

The findings were presented at the 'Circular Materials' conference organised by Chalmers University of Technology in Gothenburg, Sweden.

Lithium and cobalt are increasing in importance because they are needed in batteries of electronic devices and especially in electric cars. 

Forecasts indicate that the global need for lithium may quadruple between the years 2011 and 2025.