1：Experimental Design and Method Selection:

The study uses electrophoretic deposition (EPD) to prepare ZIF-67 thin films on Ni sheet and FTO substrates, followed by vulcanization with thioacetamide to form CoS2 thin films. These are characterized and used as counter electrodes in QDSSCs. Photoelectrochemical properties are evaluated using J-V curves, EIS, and Tafel measurements.

2：Sample Selection and Data Sources:

Ni sheet and FTO conducting glass substrates are used. ZIF-67 is synthesized from Co(NO3)2·6H2O and 2-methylimidazole. CdS and PbS quantum dots are deposited on TiO2 photoanodes using the SILAR method.

3：List of Experimental Equipment and Materials:

Equipment includes SEM (FEI Nova Nano SEM 230), XRD (RigakuD/max-2500), XPS (AXIS ULTRA Al Kα), FTIR spectrophotometer (Nicolet 360), potentiostat (Solartron 1287/1260), solar simulator (Newport 94023A), and HRTEM (Tecnai G2 F20). Materials include Ni sheet, FTO glass (Nippon Sheet Glass Co., Ltd, 10 Ω·sq-1), Co(NO3)2·6H2O, 2-methylimidazole, thioacetamide, isopropanol, methanol, ethanol, TiO2 colloids, Cd(NO3)2, Na2S, PbNO3, Zn(CH3COO)2, and polysulfide electrolyte.

4：0). Materials include Ni sheet, FTO glass (Nippon Sheet Glass Co., Ltd, 10 Ω·sq-1), Co(NO3)2·6H2O, 2-methylimidazole, thioacetamide, isopropanol, methanol, ethanol, TiO2 colloids, Cd(NO3)2, Na2S, PbNO3, Zn(CH3COO)2, and polysulfide electrolyte. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: ZIF-67 synthesis involves dissolving Co(NO3)2 and 2-methylimidazole in methanol, stirring, aging, centrifugation, and drying. EPD is performed at electric fields from 20 to 60 V·cm-1. Vulcanization is done by soaking in thioacetamide/ethanol solution and refluxing. Photoanodes are prepared by SILAR cycles. Cells are assembled with electrolyte and characterized.

5：Vulcanization is done by soaking in thioacetamide/ethanol solution and refluxing. Photoanodes are prepared by SILAR cycles. Cells are assembled with electrolyte and characterized. Data Analysis Methods:

5. Data Analysis Methods: Data from J-V curves, EIS, and Tafel curves are analyzed to extract photovoltaic parameters (Jsc, Voc, ff, η), series resistance (Rs), charge transfer resistance (Rct), and exchange current density (J0).