规模化储能领域的开拓促进了新兴储能体系钾离子电池的发展，开发具有高储能性质电极，成为该体系追求的目标。兼有金属和半导体特性的富金属磷化物是极具应用潜力的储钾电极材料，但由于在储能过程中的结构缺陷导致其电化学性能发挥有限。本申请拟利用蛋黄-蛋壳互联介孔碳优异的力学与电学性能，结合其独特的空腔与孔洞结构对富金属磷化物进行修饰，来构筑核壳互联碳负载与封装富金属磷化物复合体系，以获得高储钾性质的电极材料。通过对所构筑复合微观结构的表征分析并对其用作钾离子电池负极时电化学性能系统研究的基础上，优化获得具备优异储钾性质的电极材料。结合实验和理论计算研究，构建该复合体系微观结构参数、储钾性质、电极界面嵌脱钾过程微观结构与组分变化规律、电极界面电化学动力学特性、以及传输动力学特性之间关联，以阐明蛋黄-蛋壳互联介孔碳在增强富金属磷化物储钾性质方面的作用机理。为钾离子电池新型电极材料的开发提供实验与理论支撑。

Energy storage in large-scale promotes the development of burgeoning system for potassium-ion batteries. The exploitation of electrode materials with high performance is the target for the system. Metal-rich phosphides with metallicity and semiconductor properties are potential electrode materials for the batteries. However, the potassium storage properties of them were generally limited by their structure defects. In the project, the construction of hybrid structure based on the loading and encapsulating metal-rich phosphides on yolk-shell interconnected porous carbon with superior mechanical and electrical properties and the investigation of their electrochemical performance for potassium-ion batteries will be performed. The microstructure of the as-synthesized hybrids will be investigated and the electrochemical potassium storage performance of the hybrids will be studied systematically. And the materials with excellent potassium storage properties will be obtained during the research. By combining the experiment and the theoretical calculation results, the electrochemical mechanism of the hybrids will be elucidated on the basis of the construction of the relationship among the microstructures, the potassium storage performance, the laws for the electrode structure and component development, and the electrochemical and transport kinetics. The research will provide experimental and theoretical support for the development of electrode materials of potassium-ion batteries.