Single-atom Catalysts for Polymer Electrolyte Membrane Fuel Cells

摘要

Searching for high-activity,stabilily and highly casbellective electrocalalysts for acid oxygen reaction rolutioo(ORR)has always been a urgent problem in polymer ectrolyte menbrane fuel ells(PEMFC).Nonetheless,the electrochemical poperties of various systems have their intrinsic limits and tremendous eforts have been paid oul to search for highly eficient electocatalysts by more raional control over the size,morphology,compoition,and structure.In particular,single-atom catalysts(SACs)have atrascted extensive intenest due to theirs cxcellant activity,stability,slctivity and the highest metal tiliztion In rceat yeurs,the number of papers in the field of SACs has incressed rapidly,indicating that SACs have made great progress.This review foouses on SACs electo-echemical applications in the acid ORR and introduces immovative syntheses,fiuel cell performance and long-time durabilily.