Renault moves forward with its plan for more sustainable electric vehicles by developing cobalt-free batteries. The initiative combines innovation, ethical sourcing, and cost reduction, aiming to reshape the company’s battery strategy and the future of electric mobility.
Cobalt-free batteries at the center of Renault’s new EV strategy
Cobalt-free batteries for Renault vehicles. The French brand is pursuing increasingly sustainable storage solutions for its electric cars through an agreement between Ampere, the Renault Group company dedicated to electric vehicles and software, and the U.S.-based Stratus Materials, which develops cobalt-free active cathode materials (CAM) for advanced lithium-ion batteries. This marks Renault’s first step toward integrating LXMO (Lithium X Manganese Oxide) technology into its next-generation cars.
Batteries based on this technology, in theory, can offer high energy density comparable to or even greater than that of NMC (Nickel-Manganese-Cobalt) batteries, while maintaining lower costs and a stress tolerance similar to LFP batteries. The goal is to demonstrate the high performance of this material in battery cells designed for BEVs.
Cobalt-free batteries: why eliminate it?
Cobalt plays a key role in the composition of lithium-ion battery cathodes, as it ensures high thermal stability and good energy density. However, its use involves several disadvantages related to cost, resource scarcity, and the ethical and environmental implications of extraction, which often occurs in geopolitically unstable regions.
Traditional lithium-ion batteries commonly use cathodes based on nickel, manganese, and cobalt (NMC) or nickel, cobalt, and aluminum (NCA). Companies in the sector have developed alternatives such as lithium iron phosphate (LFP) batteries, but the main limitation of LFP remains its lower energy density, resulting in a shorter range compared to NMC cells.
From an industrial and strategic standpoint, the transition toward cobalt-free cathodes represents a turning point for supply chain security and technological independence in producing countries. The main challenge lies in finding a balance between sustainability and performance. The results obtained in recent years show that the complete elimination of cobalt from electric vehicle batteries is not only technically feasible but also economically and environmentally advantageous.
Renault’s co balt-free battery
The new technology developed by Stratus Materials and tested at Ampere’s Battery Innovation Laboratory in Lardy, France, promises highly promising results. The combination of better stress tolerance and higher energy density could allow LXMO technology batteries to reach energy densities up to twice those of NMC and LFP. The desired result? More affordable electric cars, extended battery range, and improved safety.
For Renault, battery research and development has reached its third phase, following NMC and LFP technologies that will be installed in the French brand’s BEVs starting next year. To compete with current large-scale NMC, NCA, and LFP technologies, they still need to demonstrate:
- long service life (tens of thousands of miles),
- adequate thermal and safety performance,
- reliable behavior under real automotive conditions (temperature, fast cycles, durability).
If these materials can overcome stability and life-cycle challenges, they could become a highly attractive option for electric vehicle battery packs.
