Power Generation Technology ›› 2025, Vol. 46 ›› Issue (1): 42-57.DOI: 10.12096/j.2096-4528.pgt.24117

• Energy Storage • Previous Articles     Next Articles

Research Progress on Hydrated Salt-Based Inorganic Composite Phase Change Materials and Their Applications in Battery Thermal Management

Sen WANG1,2, Liqun MA1,2, Wenjie HOU3, Zhoujian AN3, Dong ZHANG3, Hamir Johan Mombeki Pea3,4   

  1. 1.Lanzhou LS Heat Exchange Equipment Co. , Ltd. , Lanzhou 730314, Gansu Province, China
    2.Lanzhou LS Energy Equipment Engineering Research Institute Co. , Ltd. , Lanzhou 730314, Gansu Province, China
    3.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu Province, China
    4.Laboratoire de Mécanique, Energétique et Ingénierie, Université Marien NGouabi, Brazzaville 69, Congo
  • Received:2024-07-24 Revised:2024-09-26 Published:2025-02-28 Online:2025-02-27
  • Supported by:
    National Natural Science Foundation of China(52206087);Key Project of Joint Foundation of Science and Technology Planning in Gansu Province(23JRRA1563)

Abstract:

Objectives Phase change heat storage technology is one of the most concerned energy storage and management techniques in recent years, which is of great significance to realize the comprehensive gradient utilization of energy and improve the efficiency of energy utilization. Hydrated salt-based inorganic composite phase change material (PCM) exhibits significant potential for energy storage and thermal management. This review analyzes the physical properties of materials and the application in battery thermal management, to clarify the technical challenges faced in improving properties and applications. The corresponding improvement strategies are proposed to promote the application of hydrated salt-based inorganic composite PCM. Methods By analyzing the research results of hydrated salt PCM at home and abroad in recent years, the improvement effects of additives modification and reasonable encapsulation on the inherent defects such as supercooling, phase separation and liquid phase leakage of hydrated salt PCM, as well as the effects on phase change temperature, latent heat, thermal conductivity and thermal cycle stability are discussed. Results The modification technology significantly improves the inherent defects of the hydrated salt PCM, and significantly improves the thermal conductivity and thermal cycle stability of the material. Furthermore, hydrated salt-based inorganic composite PCM demonstrates excellent performance in lithium-ion battery thermal management, significantly lowering the maximum temperature and temperature differential, thereby improving overall battery performance and safety. Conclusions The large-scale application of hydrated salt-based inorganic composite PCM still faces challenges related to thermal stability and cost. Future research should further optimize the composition and structure of these materials, develop new encapsulation materials and additives, and comprehensively improve the overall performance of the materials. Particularly in the area of thermal management for lithium-ion batteries, it is crucial to strengthen the coupling research between the thermal physical characteristics of the materials and the electrochemical performance of the batteries, and provide sufficient theoretical and experimental basis for designing efficient and safe battery thermal management systems.

Key words: phase change heat storage, hydrated salt, composite phase change materials, lithium-ion battery, battery thermal management, thermal runaway protection, additives, encapsulation materials

CLC Number: