BYD Publishes WO2026158194A1 Patent for Iron Phosphide Precursor and Sodium Iron Phosphate Pyrophosphate Battery Materials比亚迪公布WO2026158194A1专利：磷化铁前驱体与磷酸铁钠焦磷酸盐电池材料
S 1.7T11 sources1 个来源—
BYD's international patent application WO2026158194A1 was published within the last 10 days, per EPO DOCDB worldwide patent data, covering an iron phosphide precursor and its preparation method together with a sodium iron phosphate pyrophosphate compound.
The filing's claims extend to an electrode sheet, a battery, and an associated electric device built from these materials, indicating an end-to-end sodium/iron-phosphate battery system.
As China's largest EV and battery maker, BYD's continued filings in iron- and sodium-based cathode chemistries point to ongoing work on lower-cost, non-lithium battery materials relevant to EV cost and supply-chain strategy.