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<p>On the personal, country, and global level, energy is of critical importance. Energy storage materials are needed to overcome the spatial and temporal mismatch between energy supply and demand. To this end, the authors present a novel library of 16 mixed sulfate salt hydrates, consisting of 4 blödite-type salts and 12 Tutton salts. The phase analysis via X-ray powder diffraction, simultaneous thermal analysis, rehydration experiments, and color dependence on hydration state are investigated, and the findings highlight the superiority of K<sub>2</sub>Ni<sub>0.75</sub>Zn<sub>0.25</sub>(SO<sub>4</sub>)<sub>2</sub>·6H<sub>2</sub>O and K<sub>2</sub>Co<sub>0.1</sub>Ni<sub>0.7</sub>Cu<sub>0.1</sub>Zn<sub>0.1</sub>(SO<sub>4</sub>)<sub>2</sub>·6H<sub>2</sub>O for further examination for potential use in thermochemical energy storage.</p>

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Novel Tutton salts with optimized rehydration as thermochemical heat storage materials

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月23日

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  • Jakob Smith,
  • Peter Weinberger

摘要

On the personal, country, and global level, energy is of critical importance. Energy storage materials are needed to overcome the spatial and temporal mismatch between energy supply and demand. To this end, the authors present a novel library of 16 mixed sulfate salt hydrates, consisting of 4 blödite-type salts and 12 Tutton salts. The phase analysis via X-ray powder diffraction, simultaneous thermal analysis, rehydration experiments, and color dependence on hydration state are investigated, and the findings highlight the superiority of K2Ni0.75Zn0.25(SO4)2·6H2O and K2Co0.1Ni0.7Cu0.1Zn0.1(SO4)2·6H2O for further examination for potential use in thermochemical energy storage.