Fabrication of form stable NaCl-Al2O3 composite for thermal energy storage by cold sintering process

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Fabrication of form stable NaCl-Al2O3 composite for thermal energy storage by cold sintering process. / Suleiman, Bilyaminu; Yu, Qinghua; Ding, Yulong; Li, Yongliang.

In: Frontiers of Chemical Science and Engineering, Vol. 13, No. 4, 12.2019, p. 727-735.

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@article{3c39177bbcb147f3b178081761cf45af,
title = "Fabrication of form stable NaCl-Al2O3 composite for thermal energy storage by cold sintering process",
abstract = "A form stable NaCl-Al2O3 (50–50 wt-%) composite material for high temperature thermal energy storage was fabricated by cold sintering process, a process recently applied to the densification of ceramics at low temperature 300°C under uniaxial pressure in the presence of small amount of transient liquid. The fabricated composite achieved as high as 98.65% of the theoretical density. The NaCl-Al2O3 composite also retained the chloride salt without leakage after 30 heating-cooling cycles between 750°C–850°C together with a holding period of 24 h at 850°C. X-ray diffraction measurements indicated congruent solubility of the alumina in chloride salt, excellent compatibility of NaCl with Al2O3, and chemical stability at high temperature. Structural analysis by scanning electron microscope also showed limited grain growth, high density, uniform NaCl distribution and clear faceted composite structure without inter-diffusion. The latent heat storage density of 252.5 J/g was obtained from simultaneous thermal analysis. Fracture strength test showed high sintered strength around 5 GPa after 50 min. The composite was found to have fair mass losses due to volatilization. Overall, cold sintering process has the potential to be an efficient, safe and cost-effective strategy for the fabrication of high temperature thermal energy storage materials.",
keywords = "cold sintering process, composite fabrication, thermal energy storage, phase change materials",
author = "Bilyaminu Suleiman and Qinghua Yu and Yulong Ding and Yongliang Li",
year = "2019",
month = dec,
doi = "10.1007/s11705-019-1823-2",
language = "English",
volume = "13",
pages = "727--735",
journal = "Frontiers of Chemical Science and Engineering",
issn = "2095-0179",
publisher = "Higher Education Press",
number = "4",

}

RIS

TY - JOUR

T1 - Fabrication of form stable NaCl-Al2O3 composite for thermal energy storage by cold sintering process

AU - Suleiman, Bilyaminu

AU - Yu, Qinghua

AU - Ding, Yulong

AU - Li, Yongliang

PY - 2019/12

Y1 - 2019/12

N2 - A form stable NaCl-Al2O3 (50–50 wt-%) composite material for high temperature thermal energy storage was fabricated by cold sintering process, a process recently applied to the densification of ceramics at low temperature 300°C under uniaxial pressure in the presence of small amount of transient liquid. The fabricated composite achieved as high as 98.65% of the theoretical density. The NaCl-Al2O3 composite also retained the chloride salt without leakage after 30 heating-cooling cycles between 750°C–850°C together with a holding period of 24 h at 850°C. X-ray diffraction measurements indicated congruent solubility of the alumina in chloride salt, excellent compatibility of NaCl with Al2O3, and chemical stability at high temperature. Structural analysis by scanning electron microscope also showed limited grain growth, high density, uniform NaCl distribution and clear faceted composite structure without inter-diffusion. The latent heat storage density of 252.5 J/g was obtained from simultaneous thermal analysis. Fracture strength test showed high sintered strength around 5 GPa after 50 min. The composite was found to have fair mass losses due to volatilization. Overall, cold sintering process has the potential to be an efficient, safe and cost-effective strategy for the fabrication of high temperature thermal energy storage materials.

AB - A form stable NaCl-Al2O3 (50–50 wt-%) composite material for high temperature thermal energy storage was fabricated by cold sintering process, a process recently applied to the densification of ceramics at low temperature 300°C under uniaxial pressure in the presence of small amount of transient liquid. The fabricated composite achieved as high as 98.65% of the theoretical density. The NaCl-Al2O3 composite also retained the chloride salt without leakage after 30 heating-cooling cycles between 750°C–850°C together with a holding period of 24 h at 850°C. X-ray diffraction measurements indicated congruent solubility of the alumina in chloride salt, excellent compatibility of NaCl with Al2O3, and chemical stability at high temperature. Structural analysis by scanning electron microscope also showed limited grain growth, high density, uniform NaCl distribution and clear faceted composite structure without inter-diffusion. The latent heat storage density of 252.5 J/g was obtained from simultaneous thermal analysis. Fracture strength test showed high sintered strength around 5 GPa after 50 min. The composite was found to have fair mass losses due to volatilization. Overall, cold sintering process has the potential to be an efficient, safe and cost-effective strategy for the fabrication of high temperature thermal energy storage materials.

KW - cold sintering process

KW - composite fabrication

KW - thermal energy storage

KW - phase change materials

UR - http://www.scopus.com/inward/record.url?scp=85069705409&partnerID=8YFLogxK

U2 - 10.1007/s11705-019-1823-2

DO - 10.1007/s11705-019-1823-2

M3 - Article

VL - 13

SP - 727

EP - 735

JO - Frontiers of Chemical Science and Engineering

JF - Frontiers of Chemical Science and Engineering

SN - 2095-0179

IS - 4

ER -