Solar energy harvesting and storage systems are being developed to address current energy challenges. In this study, we propose novel FeCo2O4 nanoflowers/Bi2S3 nanorods (FCO-NF/BS-NR) heterostructures as photo­ electrodes for energy-efficient composite photo-rechargeable zinc-ion capacitors (PR-ZICs). This work evaluates the performance of zinc ion photo-capacitors with FCO/BS composites at varying weight percentages of BS. The optimal photoelectrode (FCO/BS-0.1) exhibited a specific capacitance of 123.25 mF cm− 2 under light illumi­ nation. The PR-ZIC with FCO/BS-0.1 exhibited superior performance under light, with a specific capacitance of 744 mF cm− 2, energy density of 413.33 mWh cm− 2, and power density of 882.67 mW cm− 2, compared to dark conditions. Additionally, it retained 97.59 % of its capacitance after 10,000 cycles. Thus, the FCO/BS-0.1 photoenhanced zinc-ion capacitor\\\\\\\\\\\\\\\'s capacitance offers a practical and effective approach to developing a low-cost, highly efficient photo-supercapacitor system.

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