GoKawiilCornell researchers restore aging lithium-ion battery electrodes without shredding them
Cornell University scientists created a process called Direct Electrode-to-Electrode Regeneration (DEER) that revives worn EV battery electrodes by chemically stripping excess solid electrolyte interphase buildup rather than shredding cells into raw materials. Treated electrodes recovered up to 95% of original capacity and degraded more slowly than untreated batteries, and a second treatment round restored capacity to 90% even after prior regeneration.
GoKawiil's interpretation of the reporting above, not reported fact.
Most battery recycling today relies on energy-intensive shredding and chemical extraction to recover metals like lithium and cobalt, which is costly and resource-heavy. A method that refurbishes electrodes directly could cut costs, reduce energy use, and extend battery lifespans, though it won't work for every degraded cell, meaning it would likely complement rather than replace existing recycling infrastructure.
- DEER process removes excess SEI buildup on electrodes using a DMI chemical bath instead of breaking batteries into raw materials.
- Regenerated cells recovered up to 95% capacity and degraded more slowly than untreated batteries over roughly 800 cycles.
- A second regeneration round restored a battery to 90% capacity, suggesting electrode life can potentially be extended multiple times.
Source: techspot.com — Skye Jacobs, 2026-09-18
Published there as: “Scientists develop a way to restore aging EV batteries without breaking them down into raw materials”
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