Energy Storage
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## New Method for Cost-Effective Recycling of Lithium-Iron-Phosphate Batteries
A recent study introduces an innovative, water-based method for recycling lithium compounds from used lithium-iron-phosphate (LFP) batteries, potentially transforming waste into valuable resources. This approach utilizes an electrochemical process to extract usable lithium from ground-up battery materials, offering a more economical solution compared to traditional recycling methods.
As the automotive industry increasingly adopts next-generation rechargeable lithium-ion batteries, which are more affordable than their predecessors, the challenge of effectively recycling lithium from LFP batteries has become critical. Current recycling techniques often prove economically unfeasible for LFP batteries, primarily due to lower metal values compared to cobalt, nickel, and manganese found in other battery types. A research team, led by Kyoung-Shin Choi at the University of Wisconsin–Madison, has developed a new electrochemical procedure aimed at addressing this issue (ACS Energy Letters, 2025, DOI: 10.1021/acsenergylett.5c01087).
Choi’s team highlights that unless the lithium recovery process is fundamentally reimagined, recycling LFP batteries will not be viable. Their novel method begins with the extraction of lithium and phosphate ions from cathode materials using a combination of phosphoric acid and hydrogen peroxide. The resulting solution is then processed in an electrochemical cell, where electrodes facilitate the extraction of ions. These ions are subsequently moved to a second cell, where they are reintroduced into a solution and precipitated as lithium phosphate, which can be repurposed for new cathodes.
A significant advantage of this method is its energy efficiency, requiring only about 1 kW·h to produce 1 kg of lithium phosphate. The lithium titanium phosphate utilized in the storage electrode enhances durability during the recycling process, allowing lithium ions to move in and out effectively.
Currently, the research team is focused on scaling up this process for commercial applications, having already filed for a patent. However, they acknowledge that further development is necessary. The success of this innovative recycling method may depend on the costs associated with building industrial-scale infrastructure and addressing performance challenges at larger scales.
In summary, this new recycling method holds promise for making lithium recovery from LFP batteries economically viable, paving the way for a more sustainable approach in the growing battery industry.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/innovative-cost-effective-method-for-recycling-lithium-iron-phosphate-batteries/
