期刊
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
卷 12, 期 -, 页码 982-988出版社
ELSEVIER
DOI: 10.1016/j.jmrt.2021.02.096
关键词
Phase change materials; Thermal conductivity; Inorganic hydrate salt; Al/C hybrid nanoparticles; Thermal energy storage
资金
- Science and Technology Department Foundation of Qinghai Province [2020-ZJ-909]
- Qinghai Thousand Talents Program [724112]
- Qinghai Basic Research Program [2021-ZJ-906]
- State Key Laboratory of Wuhan University of Technology [2020-KF-1]
A novel addition agent composed of Al/C hybrid nanoparticles was developed to improve the thermal conductivity of PCMs, showing significant increase in thermal conductivity and decrease in solidification latent heat enthalpy. The incorporation of Al/C nanoparticles not only enhanced the thermal conductivity but also improved the stability of the PCM system.
Low thermal conductivity is a bottleneck for phase change materials (PCMs), which attracts much attention of the researchers. In this paper, a novel addition agent composed of Al nanoparticle and coated C (Al/C hybrid nanoparticles) was developed to improve the thermal conductivity of sodium sulfate decahydrate (Na2SO4 center dot 10H(2)O) PCMs. The Al/C hybrid nanoparticles exhibited thorn ball-like structure, in which hydrothermally generated C was well coated on the surface of Al particle to form a spiny spherical outer coating. Adding similar to 3 wt% Al/C hybrid nanoparticles caused 26.41% increment to the thermal conductivity (at 30 degrees C) and 5.13% reduction to the solidification latent heat enthalpy, which can be an effective way to improve the thermal conductivity and solidification latent heat enthalpy of the PCMs. Furthermore, the incorporation of Al/C nanoparticles improved the stability of the PCM system. (C) 2021 The Authors. Published by Elsevier B.V.
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