Alginate–Sodium Sulfate Decahydrate Phase Change Composite with Extended Stability
Source abstract
Abstract
This study reports on the use of sodium alginate to effectively stabilize sodium sulfate decahydrate (Na2SO4·10H2O, SSD) based phase change material (PCM) for application as a thermal energy storage material. Alginate/SSD composite PCMs were prepared by blending SSD with different concentrations of alginate polymer. The resulting composite PCMs demonstrate high phase change enthalpy ∼160 J/g and extended cycling stability compared to existing PCM composites. The analysis carried out by optical microscopy, X-ray scattering, and periodic density functional theory (DFT) calculations demonstrated that the stabilization effect was caused by the interplay between ionic and hydrogen bond interactions between the alginate and SSD. Additionally, the variation in mechanical properties of PCM composites with polymer concentrations made it possible to formulate a composite that maintains stable performance after 3D printing. The advanced properties make this composite a promising candidate for application as a thermal energy storage material.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Phase Change Materials Research · Advanced Battery Materials and Technologies · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
Building and Transportation Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
Energy Efficiency, Gas Technology Institute, Des Plaines 60018, United States
Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
Funding
Building Technologies Program · UT-Battelle
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