Site-Decoupled Electrocatalysis with Adaptive *OH Supply for Selective Polyethylene Terephthalate Upcycling

with 92.8% Faradaic efficiency and 97.3% selectivity toward GA, achieving a 6.8-fold enhancement in cumulative GA production over the coupled strategy. The system sustains operation for 300 h with negligible decay. Scalability tests using 100.0 g of real-world PET yielded 81.1 g PTA (93.8% yield) and 23.1 g GA (58.4% yield). Techno-economic analysis estimates a potential profit of ∼US$515.5 per ton of waste PET, demonstrating this strategy as a promising pathway for high-value upcycling of diverse polyester and polyol feedstocks.