This study explores light-responsive supercapacitors, aiming to transform energy systems by enabling the simultaneous conversion and storage of light into electricity. The study introduces an innovative light-responsive supercapacitor, employing bismuth vanadate (BiVO) as the photoactive material and date leaf-derived carbon (DLC) as the conductive electrode material. The device also incorporates fluorine-doped tin oxide (FTO) as the transparent current collector and NaSO as the electrolyte. The constructed FTO/BiVO/DLC//DLC/FTO asymmetric light-responsive supercapacitor showcased remarkable electrochemical performance, achieving a capacitance of ∼150 F/g at a current density of 0.5 A/g, thereby validating its effective charge transfer capacity during electrical activities. Further experimentation with varying photo-charging times resulted in a peak specific capacitance of ∼290 F/g. The device demonstrated an energy density of around ∼13 Wh/kg and a power density of ∼200 W/kg in the absence of light, with the energy density notably doubling to 26 Wh/kg upon extended photo-charging. Remarkably, the supercapacitor maintained ∼90% of its initial specific capacitance and ∼86% of its Coulombic efficiency following 12000 GCD cycles, underscoring its electrochemical stability and durability. The development of such a proficient and resilient light-responsive supercapacitor holds significant promise for the advancement of the energy-storage sector and offers valuable insights for renewable energy researchers.

中文翻译：

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利用 BiVO4 和枣叶衍生碳的增强型光响应超级电容器：迈向可持续能源收集和存储的飞跃

这项研究探索了光响应超级电容器，旨在通过同时将光转换和存储为电能来改变能源系统。该研究介绍了一种创新的光响应超级电容器，采用钒酸铋（BiVO）作为光活性材料，采用枣叶衍生碳（DLC）作为导电电极材料。该器件还采用掺氟氧化锡（FTO）作为透明集电器，并采用NaSO作为电解质。所构建的FTO/BiVO/DLC//DLC/FTO非对称光响应超级电容器表现出卓越的电化学性能，在0.5 A/g的电流密度下实现~150 F/g的电容，从而验证了其在电学过程中的有效电荷传输能力。活动。改变光充电时间的进一步实验导致峰值比电容达到~290 F/g。该器件在无光情况下表现出约 13 Wh/kg 的能量密度和约 200 W/kg 的功率密度，在长时间光充电时能量密度显着翻倍至 26 Wh/kg。值得注意的是，在 12000 个 GCD 循环后，超级电容器保持了约 90% 的初始比电容和约 86% 的库仑效率，强调了其电化学稳定性和耐用性。这种高效且有弹性的光响应超级电容器的开发为能源存储领域的进步带来了巨大的希望，并为可再生能源研究人员提供了宝贵的见解。