Closing the Loop on Lithium-Ion Batteries

The transition to renewable energy is closely linked to a growing demand for materials. Lithium-ion batteries play a central role in this shift, driving increased demand for raw materials such as lithium, cobalt, nickel and manganese. In Europe, limited domestic resources and reliance on imports have raised concerns about long-term supply security, particularly as geopolitical pressures continue to affect global supply chains.

Back to Battery, a technology company based in Delft, the Netherlands, is developing recycling processes aimed at recovering materials from end-of-life lithium-ion batteries. The company focuses on extracting battery-grade materials that can be reused in new batteries, contributing to a more circular approach to battery production and material use.

At the same time, existing battery recycling methods present several challenges. Many processes are energy-intensive, generate significant waste streams or result in the loss of valuable materials. In addition, Europe currently has limited refining capacity to manage the increasing volumes of battery waste expected in the coming decade, particularly as electric vehicles and energy storage systems reach the end of their service life.

Closed-Loop Processing for Battery Materials

Back to Battery’s recycling approach is based on closed-loop principles, with an emphasis on reducing waste and resource consumption during processing. The company describes a process that reuses water and reactants internally, limits chemical and energy use, and avoids direct CO₂ and NOₓ emissions. The aim is to produce recycled materials with a purity level suitable for use in lithium-ion battery manufacturing.

The process is designed to handle different battery chemistries, including lithium iron phosphate (LFP) and various nickel- and cobalt-based compositions such as NMC and NCA. This flexibility is intended to reflect the mixed nature of real-world battery waste streams from electric vehicles, consumer electronics and industrial applications.

Regulatory Context and Material Traceability

New European regulations, including the EU Battery Regulation and the introduction of Battery Passports, are expected to increase requirements for recycled content and material traceability in battery production. Recycling initiatives such as those developed by Back to Battery are positioned within this regulatory framework, supporting manufacturers in meeting future compliance requirements.

For product designers, automotive designers and engineers working with battery-powered systems, these developments highlight the growing relevance of recycled and traceable materials at the early stages of design and material selection.

Source: Back to Battery
Photo: Hilary Halliwell