Knowledge Agora

Title	To shred or not to shred: A comparative techno-economic assessment of lithium ion battery hydrometallurgical recycling retaining value and improving circularity in LIB supply chains
ID_Doc	26073
Authors	Thompson, D; Hyde, C; Hartley, JM; Abbott, AP; Anderson, PA; Harper, GDJ
Title	To shred or not to shred: A comparative techno-economic assessment of lithium ion battery hydrometallurgical recycling retaining value and improving circularity in LIB supply chains
Year	2021
Published
Abstract	Present techniques for recycling lithium-ion batteries (LIBs) tend to employ shredding as a preliminary step. This results in size reduction and passivation of reactive components. However, it also delivers lower purity products, decreasing process economics. We propose that disassembly followed by delamination retains product value and simplifies downstream chemistries. A retro-economic analysis shows the theoretical cost of reprocessing for a hypothetical $100 / kWh battery. Ten different hydrometallurgical approaches to LIB recycling are contrasted through techno-economic analysis of the wet part of the process. We show that shredded material can be recycled into new cathode material with a cost saving of up to 20%. Comparable processes using disassembled cells enable up to 80% cost saving (not accounting for the actual step of disassembling the cell). In the light of these results, we set out the barriers to disassembly of LIB cells, recommending the importance of design for disassembly as key to improving the circularity of LIB supply chains, ensuring that greater value is retained within the system.
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