发展清洁高效的现代能源技术是我国能源发展的重要战略目标。太阳能已成为当前各国重点发展的可再生能源之一，光伏发电和光催化制氢是太阳能利用的重要技术，提高其利用效率的关键在于开发具有优异能量转换性能的新能源材料。黑磷作为新型二维材料因具有载流子迁移率高等特点而成为应用前景极为广阔的新能源材料，目前仍存在着如何提高其光吸收效率、能量转换量子效率和稳定性等困难和挑战。本项目拟依托合肥同步辐射光源，建立原位软X射线吸收谱和光电子能谱实验方法，实时跟踪新型二维黑磷/富勒烯杂化材料在光电转换和光催化制氢过程中黑磷表面的化学结构和电子结构的变化及其对稳定性的影响，明确富勒烯的引入对二维黑磷的原子结构和能级特征的影响，结合理论计算构建杂化材料表界面的活性中心模型及电荷传输机制，揭示黑磷表面高效能量转换的微观机理，为提升二维黑磷/富勒烯杂化材料的设计和能量转换性能提供指导，推动二维黑磷在能量转换领域中的应用。

To develop clean and efficient modern energy technology is an important strategic goal of China's energy industry. Solar energy has become one of the most important renewable energy sources in the world. Photovoltaic power generation and photocatalytic hydrogen production are important technologies for solar energy utilization, and the key to improving the utilization efficiency is to develop new energy materials with excellent power conversion properties. As the emerging two-dimensional nanomaterial, black phosphorus (BP) has become a promising new energy material because of its high charge carrier mobility, however, there are still some difficulties and challenges in improving its light absorption efficiency, power conversion quantum efficiency and stability. This project aims to establish the in-situ soft X-ray absorption and photoelectron spectroscopy experimental methods based on National Synchrotron Radiation Laboratory (NSRL), which are used to monitor the changes of the chemical and electronic structures of novel two-dimensional BP/fullerene hybrid materials as well as their influence on the stability of BP in the process of photoelectric conversion and photocatalytic hydrogen production. Thus, the effect of fullerene on the atomic and band structures of two-dimensional BP can be unveiled. Furthermore, combined with theoretical calculations, the active center of the surface/interface of BP/fullerene hybrid materials and charge transfer mechanism can be modelled and clarified. Eventually, we hope to reveal the microscopic mechanism of high-efficiency energy conversion of BP’s surface. Our project will further provide experimental and theoretical guidance for improving the design and photoelectric conversion performance of two-dimensional BP/fullerene hybrid materials, and pave the way for the applications of two-dimensional BP in the field of energy conversion.