Li-O batteries hold immense promise as high-performance of energy storage devices. Still, their practical application faces a significant hurdle in the form of elevated overpotentials, primarily attributed to the oxygen reduction reaction (ORR) and, notably, the oxygen evolution reaction (OER) at cathodes. The advent of photo-assisted Li-O batteries offers a promising solution by leveraging photocatalysts to accelerate the kinetics of ORR and OER. Among the photocatalysts available, graphitic carbon nitride (g-CN) becomes a focal point of interest owing to its exceptional properties and diverse applicability. This comprehensive review aims to explore g-CN-based photo-assisted Li-O batteries thoroughly. The coverage spans the structure and operational principles, a comprehensive survey of research advancements and notable exemplars, and an in-depth examination of design and enhancement strategies. The specific attributes of 2D g-CN and fabrication of in-situ g-CN photoelectrodes are emphasized. This review systematically delves into the current challenges faced by g-CN application in photo-assisted Li-O batteries, while proposing possible solutions that lay foundation for the further advancement of this innovative energy storage technology.

中文翻译：

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基于石墨氮化碳（g-C3N4）的光辅助Li-O2电池：进展、挑战和前景

锂氧电池作为高性能储能设备具有巨大的前景。尽管如此，它们的实际应用仍然面临着过电势升高的重大障碍，这主要归因于氧还原反应（ORR），尤其是阴极的析氧反应（OER）。光辅助锂氧电池的出现通过利用光催化剂加速 ORR 和 OER 的动力学提供了一种有前景的解决方案。在可用的光催化剂中，石墨氮化碳（g-CN）因其优异的性能和多样化的适用性而成为人们关注的焦点。这篇综合综述旨在彻底探索基于 g-CN 的光辅助锂 O 电池。内容涵盖结构和操作原则、对研究进展和著名范例的全面调查，以及对设计和增强策略的深入研究。强调了二维 g-CN 的特殊属性和原位 g-CN 光电极的制造。本综述系统地深入研究了g-CN在光辅助锂-O电池中应用当前面临的挑战，同时提出了可能的解决方案，为这种创新储能技术的进一步发展奠定了基础。