摘要：The advancement of a Z-scheme photoelectrochemical(PEC)system for hydrogen production and watersplitting holds significant promise in addressing the escalatingglobal energy *** this study,a ternary Co-ZnCdS-BiFeO_(3)Z-scheme composite photocatalyst was *** optimizingthe ratio of BiFeO_(3)/ZnCdS,the photocatalytic activity of thematerial is enhanced,while enhancing the electron transferefficiency and strengthening the stability of the *** Co(dmgBF2)_(2)(H_(2)O)_(2)was selected as the co-catalystto further improve the electron-hole separation efficiencyand photocorrosion *** visible light irradiation,the hydrogen production rate of the PEC system can reach4.03 mmol g^(-1)h^(-1).Under optimal conditions,applying a biasvoltage of−0.1 V *** can produce−38.5μA cm^(−2).Thephotocatalytic current density of is as high as 13 times that ofpure ZnCdS,greatly improving the hydrogen production efficiency and stability of the *** study offers anovel benchmark for the development of a high efficiency Zscheme photocatalyst designed for water splitting and provides new insights into intrinsic resistance through PEC analyses.