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A fluorine‑free, water‑soluble polymer binder developed by UC San Diego and Toyota Research Institute can replace toxic solvents in lithium‑ion battery manufacturing, cutting energy use and hazardous waste. Laboratory tests show cells built with the binder match the performance of conventional batteries and retain capacity over many cycles. Crucially, the binder dissolves in water, allowing electrodes to be cleanedly separated from foils without harsh chemicals, simplifying direct recycling into new batteries. This breakthrough aligns with the EU’s decision to keep current recycling efficiency and material recovery targets unchanged, underscoring regulatory support for greener battery loops. The development could reduce manufacturing costs, lower environmental impact, and help meet growing demand for recycled battery materials as the EV market expands. [[1, 2, 3, 4]]