SiO_(2)基复合相变微胶囊的制备及其在电池热管理中的应用研究  

Preparation of SiO_(2)based composite phase change microcapsules and application in thermal management of batteries

作　　者：谭俊华 朱德伟 孙葳喆 蔚畅 薛利杰 TAN Jun-hua;ZHU De-wei;SUN Wei-zhe;WEI Chang;XUE Li-jie(Department of Materials Engineering,Taiyuan Institute of Technology,Taiyuan 030008,China)

机构地区：[1]太原工业学院材料工程系,山西太原030008

出　　处：《现代化工》2024年第12期166-170,共5页Modern Chemical Industry

基　　金：2022年和2023年国家级大学生创新创业项目(GK2022235,GK2023009)。

摘　　要：研究了3种沉淀剂对合成SiO_(2)基复合相变微胶囊的形貌特征和相变储热性能的影响。通过红外光谱仪(FT-IR)、X射线衍射仪、导热系数测定仪等对SiO_(2)基复合相变微胶囊的组成、结构和导热性能进行分析。结果表明,正十八烷与SiO_(2)壳材仅是物理结合,两者并未发生化学反应;当沉淀剂为盐酸时所制备的SiO_(2)基复合相变微胶囊分散性良好,包覆率和储能效率可达69%,导热系数提高近50%。SiO_(2)基复合相变微胶囊对锂离子电池组热管理测试结果表明,微胶囊能有效控制电池组的表面温度,且温度波动范围小。The effects of three kinds of precipitant on the morphology and heat storage properties of SiO_(2)based composite microcapsules are studied.The composition,structure and thermal conductivity of SiO_(2)composite phase change microcapsules are analyzed through infrared spectrometer FT-IR,X-ray diffractometer,thermal conductivity tester and other characterization methods.Results show there is physical combination only between noctadecane and SiO_(2)shell,without chemical reaction happening.SiO_(2)composite phase change microcapsules prepared with hydrochloric acid as the precipitator have good dispersion performance,both their coating rate and energy storage efficiency can reach 69%,and the thermal conductivity can be increased by nearly 50%.Thermal management test for Li-ion battery with SiO_(2)-based composite phase change microcapsules shows that the microcapsules can effectively control the surface temperature of the battery pack,and the temperature fluctuation range is small.

关 键 词：沉淀剂 SiO_(2)基复合相变微胶囊 相变储热性能 热管理 

分 类 号：TQ316.41[化学工程—高聚物工业]