Biodegradable　plastics　such　as　Poly　(butylene　adipate-co-terephthalate)　(PBAT)　have　been　extensively　utilized　in　numerous　fields.　However,　post-consumption,　PBAT　tends　to　pollute　the　environment　and　waste　resources.　Herein,　a　novel　approach　employing　a　1,4-butanediol-alkali　combined　method　for　the　hydrolysis　of　PBAT　is　introduced.　At　130　°C,　with　a　reaction　time　of　60　min,　the　hydrolysis　rate　of　PBAT　exceeds　99　%.　Subsequently,　a　two-step　synthesis　rapidly　produces　a　foam　nickel-supported　NiOOH　catalyst　for　the　electrocatalytic　reformation　of　the　PBAT　hydrolysate　into　higher-value　chemicals　(succinate　salts)　at　an　impressive　current　density　of　100　mA　cm−2　at　1.43　V　(vs.　RHE)　and　a　Faradaic　efficiency　of　97.6　%.　Experimental　results　and　density　functional　theory　calculations　have　elucidated　the　active　state　changes　of　the　foam　nickel-supported　NiOOH　catalyst　and　the　intermediates　in　the　oxidation　of　1,4-butanediol　to　succinate,　alongside　the　reaction　mechanism.　This　study　offers　a　viable　approach　for　the　degradation　of　PBAT　plastic　through　a　1,4-butanediol-alkali　method　and　the　rapid　preparation　of　a　foam　nickel-supported　NiOOH　electrocatalyst,　achieving　the　upgraded　recycling　of　post-consumer　biodegradable　PBAT　plastic.　©　2024　Elsevier　B.V.