Nissan Pioneers Rare Earth Recycling for EV Motors

In a major advancement for the electric vehicle industry, Nissan Motor Co. and Japan's Waseda University have launched testing of an innovative recycling process designed to reclaim high-purity rare earth compounds from spent EV motor magnets. This technology targets neodymium and dysprosium, the essential rare earth elements that power the high-performance permanent magnets in modern electric motors. These magnets are indispensable for delivering the compact size, high torque, and efficiency that define today's EVs, from compact city cars to high-performance SUVs.

The process stands out for its efficiency and environmental benefits. It begins by adding carburizing material and pig iron to whole motors, heating them to 1400°C to create a molten mixture. Iron oxide then oxidizes the rare earth elements, while a small amount of borate flux dissolves the rare earth oxides at lower temperatures. This results in a clear separation: a slag layer rich in rare earths floats atop a denser iron-carbon alloy. Remarkably, tests demonstrate a 98% recovery rate without the need for prior demagnetization or disassembly, cutting recovery time and steps by about 50% compared to existing methods.

This development arrives at a critical juncture for the automotive sector. China's tightened export controls since April 2025 have triggered supply bottlenecks and price surges of up to 500% for rare earths like neodymium and dysprosium, which are vital not just for EV motors but also sensors, power electronics, and batteries. Global players like Ford have already halted production lines, exposing the fragility of reliance on China, which controls over 90% of NdFeB magnet production. Nissan's approach offers a sustainable alternative, reducing mining pressures and environmental damage from extraction while stabilizing costs for manufacturers.

Beyond immediate recycling gains, the technology could transform automotive supply chains. Neodymium magnets dominate EV traction motors due to their superior energy density, enabling lighter, more powerful designs crucial for range and acceleration. Dysprosium additions enhance high-temperature stability, preventing demagnetization under demanding conditions like rapid acceleration or heavy loads. By recycling these materials at scale, Nissan positions itself to mitigate geopolitical risks, support the EV boom, and contribute to a circular economy for electrification. As Western nations scramble for alternatives-from rare-earth-free motors in Germany to new mining corridors in India-this Japanese innovation highlights recycling as a viable, immediate path forward.