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Dual-strategy design of high-latent heat NaNO3–LiNO3–LiCl eutectics for Medium–Low temperature thermal energy storage

Author

Listed:
  • Feng, Daili
  • Wang, Yawei
  • Zhao, Zihao
  • Feng, Yanhui

Abstract

Medium-low temperature molten salt phase change materials (MSPCMs) face challenges such as mismatches between phase change and working temperatures, and low latent heat. To address these issues, this paper developed a high-latent heat (100–300 °C) NaNO3–LiNO3–LiCl ternary MSPCM using two strategies (LiCl gradient doping and ternary eutectic design), based on calculations and experiments. Characterization results showed that the melting point of NLL20 % (NaNO3–LiNO3 gradient-doped with 20 mol% LiCl) was 190.8 °C, and its phase change latent heat reached 312.0 J/g. Although the melting point of NLL (ternary eutectic composition NaNO3–LiNO3–LiCl) increased to 225.3 °C, its latent heat reached as high as 397.0 J/g. In addition, their thermal conductivities (solid, NLL20 %: 1.54 W/(m·K); NLL: 1.44 W/(m·K)) and specific heat capacities (liquid, NLL20 %: 2.69 J/(g·°C); NLL: 2.56 J/(g·°C)) are also relatively high among MSPCMs. The changes in melting point and latent heat of both salts after 500 cycles were below 2 % and 6 %, respectively, showing good cyclic stability. This novel high-latent heat nitrate-based MSPCM shows promising potential for medium-low temperature solar thermal energy storage and industrial waste heat recovery, providing a foundation for the development of next-generation MSPCMs.

Suggested Citation

  • Feng, Daili & Wang, Yawei & Zhao, Zihao & Feng, Yanhui, 2026. "Dual-strategy design of high-latent heat NaNO3–LiNO3–LiCl eutectics for Medium–Low temperature thermal energy storage," Renewable Energy, Elsevier, vol. 260(C).
    • Handle: RePEc:eee:renene:v:260:y:2026:i:c:s0960148125028228
    DOI: 10.1016/j.renene.2025.125158
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    1. Wang, Huihui & Liu, Jun & Wang, Ying & Zhao, Yuqiong & Zhang, Guojie, 2025. "A review of the performance and application of molten salt-based phase change materials in sustainable thermal energy storage at medium and high temperatures," Applied Energy, Elsevier, vol. 389(C).
    2. Li, Qi & Li, Chuan & Du, Zheng & Jiang, Feng & Ding, Yulong, 2019. "A review of performance investigation and enhancement of shell and tube thermal energy storage device containing molten salt based phase change materials for medium and high temperature applications," Applied Energy, Elsevier, vol. 255(C).
    3. Kenisarin, Murat M., 2010. "High-temperature phase change materials for thermal energy storage," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(3), pages 955-970, April.
    4. Na, Heya & Zhang, Cancan & Wu, Yuting & Wang, Guoqing & Lu, Yuanwei, 2024. "Effect of Na2CO3 content on thermophysical properties, corrosion behaviors of KNO3-NaNO2 molten salt," Energy, Elsevier, vol. 311(C).
    5. González-Roubaud, Edouard & Pérez-Osorio, David & Prieto, Cristina, 2017. "Review of commercial thermal energy storage in concentrated solar power plants: Steam vs. molten salts," Renewable and Sustainable Energy Reviews, Elsevier, vol. 80(C), pages 133-148.
    6. Wei, Xiaolan & Song, Ming & Wang, Weilong & Ding, Jing & Yang, Jianping, 2015. "Design and thermal properties of a novel ternary chloride eutectics for high-temperature solar energy storage," Applied Energy, Elsevier, vol. 156(C), pages 306-310.
    7. Michał Jurczyk & Tomasz Spietz & Agata Czardybon & Szymon Dobras & Karina Ignasiak & Łukasz Bartela & Wojciech Uchman & Jakub Ochmann, 2024. "Review of Thermal Energy Storage Materials for Application in Large-Scale Integrated Energy Systems—Methodology for Matching Heat Storage Solutions for Given Applications," Energies, MDPI, vol. 17(14), pages 1-28, July.
    8. Jayathunga, D.S. & Karunathilake, H.P. & Narayana, M. & Witharana, S., 2024. "Phase change material (PCM) candidates for latent heat thermal energy storage (LHTES) in concentrated solar power (CSP) based thermal applications - A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 189(PB).
    9. Wang, Yuanyuan & Lu, Yuanwei & Wu, Yuting & Zhang, Cancan, 2025. "Phase diagram analysis and thermophysical properties investigation of mixed molten salts with low liquid operating temperature for thermal energy storage," Energy, Elsevier, vol. 333(C).
    10. Chaopeng Hong & Jennifer A. Burney & Julia Pongratz & Julia E. M. S. Nabel & Nathaniel D. Mueller & Robert B. Jackson & Steven J. Davis, 2021. "Global and regional drivers of land-use emissions in 1961–2017," Nature, Nature, vol. 589(7843), pages 554-561, January.
    11. Wei, Gaosheng & Wang, Gang & Xu, Chao & Ju, Xing & Xing, Lijing & Du, Xiaoze & Yang, Yongping, 2018. "Selection principles and thermophysical properties of high temperature phase change materials for thermal energy storage: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P2), pages 1771-1786.
    12. Łukasz Mika & Ewelina Radomska & Karol Sztekler & Andrzej Gołdasz & Wiesław Zima, 2025. "Review of Selected PCMs and Their Applications in the Industry and Energy Sector," Energies, MDPI, vol. 18(5), pages 1-27, March.
    13. Fernández, A.G. & Ushak, S. & Galleguillos, H. & Pérez, F.J., 2014. "Development of new molten salts with LiNO3 and Ca(NO3)2 for energy storage in CSP plants," Applied Energy, Elsevier, vol. 119(C), pages 131-140.
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