This patent presents an innovative technology to regenerate spent lithium-ion battery cathodes using an electrochemical process with redox mediators. It allows the recovery of cathodes made of lithium iron phosphate (LFP), reducing the need for new materials and minimizing environmental impact. The solution is more sustainable, efficient, and cost-effective, ideal for electric vehicle batteries and high-performance devices, promoting recycling and the circular economy.
New and innovative aspects
The innovative aspects of this patent include a cathode regeneration system for lithium-ion batteries using a redox mediator, allowing for the restoration of cathode material without the need for harmful organic solvents. The technology utilizes an electrochemical reactor to regenerate the mediator, optimizing the reuse of battery materials. Additionally, it incorporates a continuous process with counter-reactor tanks and an electrolyte regeneration system, improving process efficiency. The integration of selective ion membranes and three-dimensional graphite electrodes enhances the reaction capacity and stability of the system.
Main advantages of its use
The redox regeneration technology allows for the more efficient and sustainable regeneration of battery cathodes, eliminating the need for toxic organic solvents. Additionally, it optimizes resource usage by facilitating the recycling and reuse of key components. Its continuous process enhances operational efficiency, lowering both costs and environmental impact. This makes the technology a more economical and eco-friendly option.
Specifications
Electrochemical technology for the direct regeneration of lithium-ion battery cathodes, especially LFP, using redox mediators in an aqueous electrolyte. The system operates continuously with electrochemical cells that regenerate both the mediator and the electrolyte. It uses 3D graphite felt and platinum anodes to maximize efficiency. No organic solvents are required, and waste generation is minimal. The process is controlled using a constant current and constante voltage (CC–CV) protocol. It offers a sustainable, scalable solution ready for industrial integration.
Applications
This technology can be applied in the lithium-ion battery recycling industry, particularly for electric vehicles. It is useful in regenerating cathodes in batteries for stationary renewable energy storage. It can be implemented by battery manufacturers aiming to reduce costs and dependency on critical raw materials. It is also applicable in electronic waste recovery and treatment centers. Finally, it is ideal for companies seeking sustainable solutions within the circular economy.
Intellectual property status
Protected by an european patent EP24216584
Current development status
Device already developed and validated for industrialization.
Desired business relationship
Commercial Agreement, License Agreement, Technical Cooperation: further development; Technical Cooperation: testing new applications; Technical Cooperation: adaptation to specific needs.
The aim of the Technology Transfer Office (TTO) of the Universidad de Burgos is to promote Innovative technology through the research results transfer and the connections between the University and the new needs and requirements of society - we are the link between the University and the Industry. Contact person: José Manuel López (jmllopez@ubu.es)
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