Low‐cost and easily scaled‐up acidification is a potential synthesis approach to produce CaO‐based composites derived from steel slag for thermal energy storage/release via multicyclic calcination/carbonation. Acid concentration, acidification temperature, and acidification duration were comparatively investigated. The cyclic thermal energy storage/release properties of such composites are closely related to the acidification parameters, mainly attributed to the differences in the composition of the synthetic composites under different acidification conditions. The synergistic effect of the increased Ca and Mg content as well as the reduced content of Si and Fe within the composites contributes to improve their cyclic thermal energy storage/release performance.

中文翻译：

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钢渣衍生的CaO基复合材料的热化学储能性能

低成本且易于按比例放大的酸化方法是一种潜在的合成方法，可用于生产基于钢渣的CaO基复合材料，以通过多循环煅烧/碳化来存储/释放热能。对酸浓度，酸化温度和酸化时间进行了比较研究。这种复合材料的循环热能储存/释放性能与酸化参数密切相关，这主要归因于在不同酸化条件下合成复合材料组成的差异。复合材料中增加的Ca和Mg含量以及减少Si和Fe含量的协同作用有助于改善其循环热能存储/释放性能。