Sustainable paths to a circular economy: reusing aged Li-ion FePO4 cathodes within Na-ion cells. (14th April 2021)

• Record Type: Journal Article
• Authors: Gucciardi, Emanuele; Galceran, Montserrat; Bustinza, Ainhoa; Bekaert, Emilie; Casas-Cabanas, Montse
• Is Part Of: JPhys materials. Volume 4:Number 3(2021)
• Publication Date: 2021-04-14
• Subjects: reuse -- recycle -- Li-ion -- Na-ion -- battery aging; Solid state physics -- Periodicals; Materials science -- Periodicals; 530.41
• DOI: 10.1088/2515-7639/abf08f
• Languages: English
• ISSNs: 2515-7639

Abstract

Abstract: Responsible disposal and recycling are essential for the sustainability of the battery market, which has been exponentially growing in the past few years. Under such a scenario, the recycling of materials of less economic value, but environmentally much more sustainable like LiFePO4, represents an economic challenge. In this paper an approach to recover used FePO4 electrodes from calendar aged Lithium-ion (Li-ion) batteries and their reuse in Sodium-ion (Na-ion) cells is proposed. The electrochemical performances of the Na-ion cell are shown to be comparable with previously reported values and, since the electrode can retain the original microstructure and distribution, electrode processing can be avoided. A proof of concept of a NaFePO4 //hard carbon full cell using a very high positive electrode loading optimized for Li-ion batteries (≍14 mg cm −2 ) is shown.