Challenges such as shuttle effect have hindered the commercialization of lithium‐sulfur batteries (LSBs), despite their potential as high‐energy‐density storage devices. To address these issues, we explore the integration of solar energy into LSBs, creating a photo‐assisted lithium‐sulfur battery (PA‐LSB). The PA‐LSB provides a novel and sustainable solution by coupling the photocatalytic effect to accelerate sulfur redox reactions. Herein, a perovskite quantum dot‐loaded MOF material serves as a cathode for the PA‐LSB, creating built‐in electric fields at the micro‐interface to extend the lifetime of photo‐generated charge carriers. The band structure of the composite material aligns well with the electrochemical reaction potential of lithium‐sulfur, enabling precise regulation of polysulfides in the cathode of the PA‐LSB system. This is attributed to the selective catalysis of the liquid‐solid reaction stage in the lithium‐sulfur electrochemical process by photocatalysis. These contribute to the outstanding performance of PA‐LSBs, particularly demonstrating a remarkably high reversible capacity of 679 mAh g‐1 at 5 C, maintaining stable cycling for 1500 cycles with the capacity decay rate of 0.022% per cycle. Additionally, the photo‐charging capability of the PA‐LSB holds the potential to compensate for non‐electric energy losses during the energy storage process, contributing to the development of lossless energy storage devices.

中文翻译：

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通过耦合光催化调节高性能光辅助锂硫电池的硫氧化还原动力学

尽管锂硫电池（LSB）具有作为高能量密度存储设备的潜力，但穿梭效应等挑战阻碍了其商业化。为了解决这些问题，我们探索将太阳能集成到 LSB 中，创建光辅助锂硫电池（PA-LSB）。 PA-LSB 通过耦合光催化效应来加速硫氧化还原反应，提供了一种新颖且可持续的解决方案。在此，钙钛矿量子点负载的 MOF 材料用作 PA-LSB 的阴极，在微界面处产生内置电场，以延长光生电荷载流子的寿命。该复合材料的能带结构与锂硫的电化学反应电位很好地匹配，从而能够精确调节PA-LSB系统阴极中的多硫化物。这归因于光催化锂硫电化学过程中液固反应阶段的选择性催化。这些都有助于 PA-LSB 的出色性能，特别是在 5 C 下表现出 679 mAh g-1 的极高可逆容量，在 1500 个循环中保持稳定循环，每个循环的容量衰减率为 0.022%。此外，PA-LSB的光充电能力有可能补偿储能过程中的非电能损失，有助于无损储能设备的发展。