Abstract

Thermochemical materials MgCl₂ and ZnSO₄ have been investigated in depth on larger energy density, chemical stability and larger dehydration/hydration output in view of space heat application. The selection of these materials was based on a recent review on all possible salt hydrates, within the frame of a thermochemical heat storage density and considering current advances in heat storage application. ZnSO₄⋅7H₂O and MgCl₂⋅6H₂O were robust with a specific mixing ratio which upgrade materials to a new level of energy. The as-prepared composites significantly improved cyclability, heat of absorption and desorption. The study suggested that hydration/dehydration performance of Zm₂ composite shows promising ability among various mixing composites ratios. The TG-DSC result highlighted that compare with pure ZnSO₄ and MgCl₂, heat storage performance of derived Zm₂ 40 and 53% increased, respectively. Moreover, among these thermochemical materials, cyclability test of Zm₂ composite showed a promising result.

中文翻译：

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用于增强热化学蓄热应用的 ZnSO4/MgCl2 复合水合盐的新型合成和结构研究

摘要

鉴于空间热应用，热化学材料 MgCl ₂和 ZnSO _{4在更大的能量密度、化学稳定性和更大的脱水/水合输出方面进行了深入研究。}这些材料的选择是基于最近对所有可能的盐水合物的审查，在热化学储热密度的框架内，并考虑到当前储热应用的进展。ZnSO ₄ ∙7H ₂ O 和 MgCl ₂ ∙6H ₂ O 具有特定的混合比，可将材料提升到新的能量水平。所制备的复合材料显着提高了可循环性、吸收热和解吸热。研究表明 Zm 的水合/脱水性能₂复合材料在各种混合复合材料比例中显示出有前景的能力。TG-DSC结果表明，与纯ZnSO ₄和MgCl _{2相比，衍生Zm 2} 40 和MgCl 2的蓄热性能分别提高了53%。此外，在这些热化学材料中，Zm ₂复合材料的循环性能测试显示出可喜的结果。