Construction of Moiré-like lignin based carbon electrodes to efficiently improve the performance of photo-assisted supercapacitors

• A Moiré-like structure was engineered on lignin carbon electrodes via in-situ deposition onto a DVD matrix, enhancing light absorption and electrochemical performance. • Under illumination, the Moiré-like carbon electrode achieved a specific capacitance of 253.5 F g−1 at 0.5 A g−1, a 35.6% improvement over the non-grating counterpart. • A symmetrical supercapacitor based on this material delivered an areal capacitance of 58.84 mF cm−2 and an energy density of 4.46 Wh kg−1, with 85.2% capacitance retention after 5000 cycles. • This work provides a cost-effective strategy to simultaneously improve light-harvesting and capacitive performance in photo-assisted supercapacitors.