Safer and more efficient rechargeable lithium batteries: Aalto is taking part in new corporate cooperation projects
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Brainboxes find new way to revive dead lithium-ion batteries
It s called re-lithiation
âRe-lithiationâ explained
The process, called âre-lithiation,â aims tο reverse the gradual loss of lithium which accounts for the batteryâs performance loss.Â
Through an electrolysis process the scientists managed to rejuvenate lithium in battery electrodes, and then compared the performance of the ârefreshedâ electrodes with those from a brand new battery.
The advantages
This doesnât really mean that a revived battery can replace a new one, but that it can potentially reduce the cost and complexity from recycling battery components and materials.Â
The current methods, which deal with a degraded battery structure, require expensive and energy-consuming processes to separate and purify the materials before they can be reused.
Aalto researchers discover LiCoO2 electrodes can be recycled without crushing or melting
Researchers at Aalto University in Finland have discovered that Li-ion battery electrodes containing cobalt (LiCoO
2) can be reused as is after being newly saturated with lithium. In comparison to traditional recycling, which typically extracts metals from crushed batteries by melting or dissolving them, the new process saves valuable raw materials, and likely also energy. The research is published in the journal
ChemSusChem.
In our earlier study of how lithium cobalt oxide batteries age, we noticed that one of the main causes of battery deterioration is the depletion of lithium in the electrode material. The structures can nevertheless remain relatively stable, so we wanted to see if they can be reused.
Precious battery parts âdirectly reusedâ without crushing or melting 29 Apr 2021
Stock image. The new technique replenishes spent lithium in electrodes to allow reuse (Credit: Shutterstock) A new recycling process allows for âdirect reuseâ of precious lithium battery electrodes without energy- and material-intensive treatment.
Researchers at Aalto University in Finland discovered that cobalt-containing electrodes in lithium batteries can be reused ‘as is’ after being newly saturated with lithium. Compared to conventional recycling, which typically extracts metals from crushed batteries by melting or dissolving them, the new process saves valuable raw materials – and likely also energy.
“In our earlier study of how lithium cobalt oxide batteries age, we noticed that one of the main causes of battery deterioration is the depletion of lithium in the electrode material. The structures can nevertheless remain relatively stable, so we
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