**5. Conclusions**

This chapter systematically summarizes the preparation process of medium-high temperature ceramic-based CPCMs, the material types of porous ceramic skeletons and the study and application of CPCMs at the system level. So that readers can recognize the basic information of medium-high temperature ceramic-based CPCMs and screen the ideal CPCMs according to specific needs.

1.The preparation process of ceramic-based CPCM mainly includes mixing-impregnation and cold press-sintering. The former could realize the complex shape of CPCMs with high strength and thermal cycling stability but has high requirements for the skeleton's high porosity and pore size, and the process is complex and energy-consuming. The latter process is simple, economical, and suitable for mass production. However high-temperature sintering causes some PCM evaporation, and the skeleton structure is not uniform and easily damaged.

*Medium-High Temperature Composite Phase Change Materials Based on Porous Ceramics DOI: http://dx.doi.org/10.5772/intechopen.114185*

