新型层状GeP3晶体在电化学储能领域具有重要的科学研究和实际应用价值，目前制备的GeP3晶体多为结构破坏严重的纳米粉体，难以发挥出二维GeP3晶体的结构优势，严重限制了其大规模应用开发。因此，探索出高压下GeP3晶体生长规律，实现高质量、大尺度（厘米级）样品合成及二维GeP3晶体制备，对二维GeP3晶体电化学电容储能性能与器件应用研究尤为重要。本项目是申请人前期工作的延续、深入和拓展，拟利用高能球磨法解决GeP3晶体纯度问题，探索压力、温度场对晶体定向生长的影响规律，利用液相剥离制备高质量二维晶体，并根据二维晶体结构分析和电化学性能测试数据辅以第一性原理计算，阐明不同离子对其储能机制的影响，筛选出具有高能量/功率密度和优异循环性能的储能方案。本项目的实施有望解决高质量、大尺度层状GeP3晶体难以合成的关键问题，推进二维GeP3晶体的基础研究和器件应用研究，为其它二维材料的优化设计提供指导。

The novel layered GeP3 crystals have important scientific research and practical application value in the field of electrochemical energy storage. Currently, most of the prepared GeP3 crystals are nano-powders with severe structural damage, so it is difficult to reveal the structural advantages of two-dimensional GeP3 crystals, which severely limited its massive application development. Therefore, exploring the growth rule of GeP3 crystals under high pressure to achieve high-quality, large-size (cm-level) sample synthesis and preparation of two-dimensional GeP3 crystals are particularly important for the study of electrochemical storage capacity and device applications of two-dimensional GeP3 crystals. The current project is the continuation, deepening and expansion of the applicant's preliminary work. It is proposed to use a high-energy ball mill method to solve the problem of crystal purity, further explore the influence of the pressure and temperature field on crystal growth, and prepare high quality two-dimensional crystals by liquid-exfoliated method. According to the two-dimensional GeP3 crystal structure analysis and electrochemical performance testing data along with first principles calculation simulation, the effect of different ions on its energy storage mechanism is clarified, and energy storage schemes with high energy/power density and excellent cycle performance are selected. The implementation of this project is expected to solve the key problem of difficult synthesis of high-quality and large-size GeP3 crystal, promote their basic research and device application research, and provide guidance for the optimization design of other layered materials.