Stable salt hydrate-based thermal energy storage materials

Yuzhan Li; Navin Kumar; Jason Hirschey; Damilola O. Akamo; Kai Li; Turnaoglu Tugba; Monojoy Goswami; Rios Orlando; Tim J. LaClair; Samuel Graham; Kyle R. Gluesenkamp

doi:10.1016/j.compositesb.2022.109621

Stable salt hydrate-based thermal energy storage materials

Yuzhan Li, Navin Kumar, Jason Hirschey, Damilola O. Akamo, Kai Li, Turnaoglu Tugba, Monojoy Goswami, Rios Orlando, Tim J. LaClair, Samuel Graham, Kyle R. Gluesenkamp

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Heating and cooling systems in building infrastructure utilize conventional materials that account for a considerable amount of energy usage and waste. Phase change material (PCM) is considered a promising candidate for thermal energy storage that can improve energy efficiency in building systems. Here, a novel salt hydrate-based PCM composite with high energy storage capacity, relatively higher thermal conductivity, and excellent thermal cycling stability was designed and developed. The thermal cycling stability of the PCM composite was enhanced by using dextran sulfate sodium (DSS) salt as a polyelectrolyte additive, which significantly reduced the phase segregation of salt hydrate. The energy storage capacity and the thermal conductivity of the composite were enhanced by the addition of various graphitic materials along with Borax nucleator. A significant increase in thermal cycling stability was observed for the DSS-modified composite, with over 100 thermal cycles without degradation. The final PCM composite exhibited as much as 290% increase in energy storage capacity relative to the pure salt hydrate, and approximately 20% increase in thermal conductivity. In addition, the PCM composite developed can be produced at larger scale, and can potentially change the future of heating/cooling system in building infrastructure.

Original language	English
Article number	109621
Journal	Composites Part B: Engineering
Volume	233
DOIs	https://doi.org/10.1016/j.compositesb.2022.109621
State	Published - Mar 15 2022

Funding

This work was sponsored by the U.S. Department of Energy's (DOE) Building Technologies Office under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC. The authors would like to acknowledge Mr. Sven Mumme from the U.S. Department of Energy Building Technologies Office. SAXS data were measured on the Xeuss 3 SAXS/WAXS instrument via the ORNL instrumentation pool and the data were analyzed at the Center for Nanophase Materials Sciences (CNMS) which is a U.S. Department of Energy, Office of Science User Facility. The authors thank Dr. Beth Armstrong at ORNL for assistance in the Zeta potential measurements and Dr. Jong K. Keum for assistance in the SAXS/WAXS measurements. This work was sponsored by the U.S. Department of Energy's (DOE) Building Technologies Office under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC. The authors would like to acknowledge Mr. Sven Mumme from the U.S. Department of Energy Building Technologies Office. SAXS data were measured on the Xeuss 3 SAXS/WAXS instrument via the ORNL instrumentation pool and the data were analyzed at the Center for Nanophase Materials Sciences (CNMS) which is a U.S. Department of Energy, Office of Science User Facility. The authors thank Dr. Beth Armstrong at ORNL for assistance in the Zeta potential measurements and Dr. Jong K. Keum for assistance in the SAXS/WAXS measurements.

Funders	Funder number
U.S. Department of Energy
Office of Science
Oak Ridge National Laboratory
Building Technologies Office	DE-AC05-00OR22725
Bioenergy Technologies Office

Keywords

Phase change material
Phase separation
Polyelectrolyte
Sodium sulfate decahydrate
Thermal cycling

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.compositesb.2022.109621

Cite this

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title = "Stable salt hydrate-based thermal energy storage materials",

abstract = "Heating and cooling systems in building infrastructure utilize conventional materials that account for a considerable amount of energy usage and waste. Phase change material (PCM) is considered a promising candidate for thermal energy storage that can improve energy efficiency in building systems. Here, a novel salt hydrate-based PCM composite with high energy storage capacity, relatively higher thermal conductivity, and excellent thermal cycling stability was designed and developed. The thermal cycling stability of the PCM composite was enhanced by using dextran sulfate sodium (DSS) salt as a polyelectrolyte additive, which significantly reduced the phase segregation of salt hydrate. The energy storage capacity and the thermal conductivity of the composite were enhanced by the addition of various graphitic materials along with Borax nucleator. A significant increase in thermal cycling stability was observed for the DSS-modified composite, with over 100 thermal cycles without degradation. The final PCM composite exhibited as much as 290% increase in energy storage capacity relative to the pure salt hydrate, and approximately 20% increase in thermal conductivity. In addition, the PCM composite developed can be produced at larger scale, and can potentially change the future of heating/cooling system in building infrastructure.",

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author = "Yuzhan Li and Navin Kumar and Jason Hirschey and Akamo, {Damilola O.} and Kai Li and Turnaoglu Tugba and Monojoy Goswami and Rios Orlando and LaClair, {Tim J.} and Samuel Graham and Gluesenkamp, {Kyle R.}",

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AU - Li, Kai

AU - Tugba, Turnaoglu

AU - Goswami, Monojoy

AU - Orlando, Rios

AU - LaClair, Tim J.

AU - Graham, Samuel

AU - Gluesenkamp, Kyle R.

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N2 - Heating and cooling systems in building infrastructure utilize conventional materials that account for a considerable amount of energy usage and waste. Phase change material (PCM) is considered a promising candidate for thermal energy storage that can improve energy efficiency in building systems. Here, a novel salt hydrate-based PCM composite with high energy storage capacity, relatively higher thermal conductivity, and excellent thermal cycling stability was designed and developed. The thermal cycling stability of the PCM composite was enhanced by using dextran sulfate sodium (DSS) salt as a polyelectrolyte additive, which significantly reduced the phase segregation of salt hydrate. The energy storage capacity and the thermal conductivity of the composite were enhanced by the addition of various graphitic materials along with Borax nucleator. A significant increase in thermal cycling stability was observed for the DSS-modified composite, with over 100 thermal cycles without degradation. The final PCM composite exhibited as much as 290% increase in energy storage capacity relative to the pure salt hydrate, and approximately 20% increase in thermal conductivity. In addition, the PCM composite developed can be produced at larger scale, and can potentially change the future of heating/cooling system in building infrastructure.

AB - Heating and cooling systems in building infrastructure utilize conventional materials that account for a considerable amount of energy usage and waste. Phase change material (PCM) is considered a promising candidate for thermal energy storage that can improve energy efficiency in building systems. Here, a novel salt hydrate-based PCM composite with high energy storage capacity, relatively higher thermal conductivity, and excellent thermal cycling stability was designed and developed. The thermal cycling stability of the PCM composite was enhanced by using dextran sulfate sodium (DSS) salt as a polyelectrolyte additive, which significantly reduced the phase segregation of salt hydrate. The energy storage capacity and the thermal conductivity of the composite were enhanced by the addition of various graphitic materials along with Borax nucleator. A significant increase in thermal cycling stability was observed for the DSS-modified composite, with over 100 thermal cycles without degradation. The final PCM composite exhibited as much as 290% increase in energy storage capacity relative to the pure salt hydrate, and approximately 20% increase in thermal conductivity. In addition, the PCM composite developed can be produced at larger scale, and can potentially change the future of heating/cooling system in building infrastructure.

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KW - Polyelectrolyte

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Stable salt hydrate-based thermal energy storage materials

Abstract

Funding

Keywords

UN SDGs

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