Rechargeable lithium ion batteries ability our phones and tablets they drive us from A to B in electric vehicles, and accept abounding applications besides. Unfortunately, the accessories that they ability can abort and the batteries themselves are frequently alone accessible for two to three years. As such, there are millions batteries that charge be recycled. Research appear in the International Journal of Energy Technology and Policy describes a new way to abstract the lithium and the azure that accomplish up the aggregate of the metal apparatus of these batteries.
According to Ataur Rahman of the Department of Mechanical Engineering, at the International Islamic University Malaysia and aide in the Department of Economics, Rafia Afroz, explain that the amount of both lithium and azure is ascent as appeal for lithium ion batteries which crave both metals for their architecture are more in demand. They accept advised a recycling technology that can abstract with reasonable ability the metals from atom batteries.
The team’s hydrometallurgical adjustment can antithesis both azure and lithium in their laboratory-scale tests from accepted 48.8 Wh lithium batteries. This involves aboriginal baking the array in an oven at 700 Celsius to “calcinate” the cobalt, lithium and chestnut apparatus to abort amoebic compounds, such as plastics and foams. The calcined actual accustomed metal and metal compounds (salts and oxides) is again advised with able acid, hydrochloric acerbic and sulfuric acid, to bleed out the metal ions. The aggregation experimented with application hydrogen achromatize as a abbreviation abettor to see whether that reagent would advance the leaching process. They were able to abstract the lithium with about 50 percent ability and the azure with about 25 percent efficiency.
Given that anniversary of these metals represent 41% of the weight of a 48.8 Wh array and 8.5% of the weight, these are advantageous abstraction ante that would on balance, accustomed the heating and acerbic use, represent a commercially applicable access to recycling the electrodes from such batteries. The leached metals could again be acclimated in the accomplish of new batteries or abroad in industry. The attenuated aqueous decay could be added advised to accomplish it safe for auctioning beneath recycling regulations.
Explore further: High-purity metals recovered from array decay
More information: Rahman, A. and Afroz, R. (2017) ‘Lithium array recycling administration and policy’, Int. J. Energy Technology and Policy, Vol. 13, No. 3, pp.278-291.
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