氯化盐因价格低廉、高温稳定性好和储能密度大等优点成为储能材料的研究重点之一。归纳了多元氯化盐的配比、制备方法及热物性能的研究进展,总结了氧化铜(CuO)、三氧化二铝(Al2O3)、氧化锌(ZnO)等纳米添加剂对氯化物熔盐比热容、热导率等关键参数的作用机制与强化效应,阐明了高温下多元氯化盐对对奥氏体不锈钢和镍基合金材料的腐蚀行为及防护方法。通过制备多元混合熔盐和改变配比能够调控相变温度,而添加纳米颗粒能够增强氯化盐的比热容和导热性能,降低其腐蚀性。
Chlorinated salts have become one of the research focuses in energy storage materials due to their advantages of low cost,excellent high-temperature stability and high energy storage density.The research progress on the ratios,preparation methods and thermophysical properties of polychlorinated salts was summarized.The mechanisms and strengthening effects of nano additives,such as copper oxide (CuO),aluminum oxide (Al2O3) and zinc oxide (ZnO),on the key parameters,such as the specific heat capacity of chloride molten salts,thermal conductivity,etc.,were summarized.In addition,the corrosive behaviors of polychlorinated salts on the materials of austenitic stainless steel and nickel-based alloys at high temperature,as well as corresponding protective methods were illustrated.Through the preparation of multi-mixed molten salts and changing the ratio could regulate the phase transition temperature,and the addition of nanoparticles could enhance the specific heat and thermal conductivity of chloride salts while reducing their corrosiveness.
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基金资助
江西省自然科学基金项目(20192BAB206040)
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